update phpexcel

PhpOffice/PhpSpreadsheet/Calculation/Category.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+abstract class Category
+{
+    // Function categories
+    const CATEGORY_CUBE = 'Cube';
+    const CATEGORY_DATABASE = 'Database';
+    const CATEGORY_DATE_AND_TIME = 'Date and Time';
+    const CATEGORY_ENGINEERING = 'Engineering';
+    const CATEGORY_FINANCIAL = 'Financial';
+    const CATEGORY_INFORMATION = 'Information';
+    const CATEGORY_LOGICAL = 'Logical';
+    const CATEGORY_LOOKUP_AND_REFERENCE = 'Lookup and Reference';
+    const CATEGORY_MATH_AND_TRIG = 'Math and Trig';
+    const CATEGORY_STATISTICAL = 'Statistical';
+    const CATEGORY_TEXT_AND_DATA = 'Text and Data';
+}

PhpOffice/PhpSpreadsheet/Calculation/Database.php

@@ -0,0 +1,632 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+class Database
+{
+    /**
+     * fieldExtract.
+     *
+     * Extracts the column ID to use for the data field.
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param mixed $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     *
+     * @return null|string
+     */
+    private static function fieldExtract($database, $field)
+    {
+        $field = strtoupper(Functions::flattenSingleValue($field));
+        $fieldNames = array_map('strtoupper', array_shift($database));
+
+        if (is_numeric($field)) {
+            $keys = array_keys($fieldNames);
+
+            return $keys[$field - 1];
+        }
+        $key = array_search($field, $fieldNames);
+
+        return ($key) ? $key : null;
+    }
+
+    /**
+     * filter.
+     *
+     * Parses the selection criteria, extracts the database rows that match those criteria, and
+     * returns that subset of rows.
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return array of mixed
+     */
+    private static function filter($database, $criteria)
+    {
+        $fieldNames = array_shift($database);
+        $criteriaNames = array_shift($criteria);
+
+        //    Convert the criteria into a set of AND/OR conditions with [:placeholders]
+        $testConditions = $testValues = [];
+        $testConditionsCount = 0;
+        foreach ($criteriaNames as $key => $criteriaName) {
+            $testCondition = [];
+            $testConditionCount = 0;
+            foreach ($criteria as $row => $criterion) {
+                if ($criterion[$key] > '') {
+                    $testCondition[] = '[:' . $criteriaName . ']' . Functions::ifCondition($criterion[$key]);
+                    ++$testConditionCount;
+                }
+            }
+            if ($testConditionCount > 1) {
+                $testConditions[] = 'OR(' . implode(',', $testCondition) . ')';
+                ++$testConditionsCount;
+            } elseif ($testConditionCount == 1) {
+                $testConditions[] = $testCondition[0];
+                ++$testConditionsCount;
+            }
+        }
+
+        if ($testConditionsCount > 1) {
+            $testConditionSet = 'AND(' . implode(',', $testConditions) . ')';
+        } elseif ($testConditionsCount == 1) {
+            $testConditionSet = $testConditions[0];
+        }
+
+        //    Loop through each row of the database
+        foreach ($database as $dataRow => $dataValues) {
+            //    Substitute actual values from the database row for our [:placeholders]
+            $testConditionList = $testConditionSet;
+            foreach ($criteriaNames as $key => $criteriaName) {
+                $k = array_search($criteriaName, $fieldNames);
+                if (isset($dataValues[$k])) {
+                    $dataValue = $dataValues[$k];
+                    $dataValue = (is_string($dataValue)) ? Calculation::wrapResult(strtoupper($dataValue)) : $dataValue;
+                    $testConditionList = str_replace('[:' . $criteriaName . ']', $dataValue, $testConditionList);
+                }
+            }
+            //    evaluate the criteria against the row data
+            $result = Calculation::getInstance()->_calculateFormulaValue('=' . $testConditionList);
+            //    If the row failed to meet the criteria, remove it from the database
+            if (!$result) {
+                unset($database[$dataRow]);
+            }
+        }
+
+        return $database;
+    }
+
+    private static function getFilteredColumn($database, $field, $criteria)
+    {
+        //    reduce the database to a set of rows that match all the criteria
+        $database = self::filter($database, $criteria);
+        //    extract an array of values for the requested column
+        $colData = [];
+        foreach ($database as $row) {
+            $colData[] = $row[$field];
+        }
+
+        return $colData;
+    }
+
+    /**
+     * DAVERAGE.
+     *
+     * Averages the values in a column of a list or database that match conditions you specify.
+     *
+     * Excel Function:
+     *        DAVERAGE(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float|string
+     */
+    public static function DAVERAGE($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::AVERAGE(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DCOUNT.
+     *
+     * Counts the cells that contain numbers in a column of a list or database that match conditions
+     * that you specify.
+     *
+     * Excel Function:
+     *        DCOUNT(database,[field],criteria)
+     *
+     * Excel Function:
+     *        DAVERAGE(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return int
+     *
+     * @TODO    The field argument is optional. If field is omitted, DCOUNT counts all records in the
+     *            database that match the criteria.
+     */
+    public static function DCOUNT($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::COUNT(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DCOUNTA.
+     *
+     * Counts the nonblank cells in a column of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DCOUNTA(database,[field],criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return int
+     *
+     * @TODO    The field argument is optional. If field is omitted, DCOUNTA counts all records in the
+     *            database that match the criteria.
+     */
+    public static function DCOUNTA($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        //    reduce the database to a set of rows that match all the criteria
+        $database = self::filter($database, $criteria);
+        //    extract an array of values for the requested column
+        $colData = [];
+        foreach ($database as $row) {
+            $colData[] = $row[$field];
+        }
+
+        // Return
+        return Statistical::COUNTA(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DGET.
+     *
+     * Extracts a single value from a column of a list or database that matches conditions that you
+     * specify.
+     *
+     * Excel Function:
+     *        DGET(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return mixed
+     */
+    public static function DGET($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        $colData = self::getFilteredColumn($database, $field, $criteria);
+        if (count($colData) > 1) {
+            return Functions::NAN();
+        }
+
+        return $colData[0];
+    }
+
+    /**
+     * DMAX.
+     *
+     * Returns the largest number in a column of a list or database that matches conditions you that
+     * specify.
+     *
+     * Excel Function:
+     *        DMAX(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float
+     */
+    public static function DMAX($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::MAX(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DMIN.
+     *
+     * Returns the smallest number in a column of a list or database that matches conditions you that
+     * specify.
+     *
+     * Excel Function:
+     *        DMIN(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float
+     */
+    public static function DMIN($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::MIN(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DPRODUCT.
+     *
+     * Multiplies the values in a column of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DPRODUCT(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float
+     */
+    public static function DPRODUCT($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return MathTrig::PRODUCT(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DSTDEV.
+     *
+     * Estimates the standard deviation of a population based on a sample by using the numbers in a
+     * column of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DSTDEV(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float|string
+     */
+    public static function DSTDEV($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::STDEV(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DSTDEVP.
+     *
+     * Calculates the standard deviation of a population based on the entire population by using the
+     * numbers in a column of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DSTDEVP(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float|string
+     */
+    public static function DSTDEVP($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::STDEVP(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DSUM.
+     *
+     * Adds the numbers in a column of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DSUM(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float
+     */
+    public static function DSUM($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return MathTrig::SUM(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DVAR.
+     *
+     * Estimates the variance of a population based on a sample by using the numbers in a column
+     * of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DVAR(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float
+     */
+    public static function DVAR($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::VARFunc(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+
+    /**
+     * DVARP.
+     *
+     * Calculates the variance of a population based on the entire population by using the numbers
+     * in a column of a list or database that match conditions that you specify.
+     *
+     * Excel Function:
+     *        DVARP(database,field,criteria)
+     *
+     * @category Database Functions
+     *
+     * @param mixed[] $database The range of cells that makes up the list or database.
+     *                                        A database is a list of related data in which rows of related
+     *                                        information are records, and columns of data are fields. The
+     *                                        first row of the list contains labels for each column.
+     * @param int|string $field Indicates which column is used in the function. Enter the
+     *                                        column label enclosed between double quotation marks, such as
+     *                                        "Age" or "Yield," or a number (without quotation marks) that
+     *                                        represents the position of the column within the list: 1 for
+     *                                        the first column, 2 for the second column, and so on.
+     * @param mixed[] $criteria The range of cells that contains the conditions you specify.
+     *                                        You can use any range for the criteria argument, as long as it
+     *                                        includes at least one column label and at least one cell below
+     *                                        the column label in which you specify a condition for the
+     *                                        column.
+     *
+     * @return float
+     */
+    public static function DVARP($database, $field, $criteria)
+    {
+        $field = self::fieldExtract($database, $field);
+        if ($field === null) {
+            return null;
+        }
+
+        // Return
+        return Statistical::VARP(
+            self::getFilteredColumn($database, $field, $criteria)
+        );
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/Engine/CyclicReferenceStack.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Engine;
+
+class CyclicReferenceStack
+{
+    /**
+     * The call stack for calculated cells.
+     *
+     * @var mixed[]
+     */
+    private $stack = [];
+
+    /**
+     * Return the number of entries on the stack.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->stack);
+    }
+
+    /**
+     * Push a new entry onto the stack.
+     *
+     * @param mixed $value
+     */
+    public function push($value)
+    {
+        $this->stack[$value] = $value;
+    }
+
+    /**
+     * Pop the last entry from the stack.
+     *
+     * @return mixed
+     */
+    public function pop()
+    {
+        return array_pop($this->stack);
+    }
+
+    /**
+     * Test to see if a specified entry exists on the stack.
+     *
+     * @param mixed $value The value to test
+     *
+     * @return bool
+     */
+    public function onStack($value)
+    {
+        return isset($this->stack[$value]);
+    }
+
+    /**
+     * Clear the stack.
+     */
+    public function clear()
+    {
+        $this->stack = [];
+    }
+
+    /**
+     * Return an array of all entries on the stack.
+     *
+     * @return mixed[]
+     */
+    public function showStack()
+    {
+        return $this->stack;
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/Engine/Logger.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Engine;
+
+class Logger
+{
+    /**
+     * Flag to determine whether a debug log should be generated by the calculation engine
+     *        If true, then a debug log will be generated
+     *        If false, then a debug log will not be generated.
+     *
+     * @var bool
+     */
+    private $writeDebugLog = false;
+
+    /**
+     * Flag to determine whether a debug log should be echoed by the calculation engine
+     *        If true, then a debug log will be echoed
+     *        If false, then a debug log will not be echoed
+     * A debug log can only be echoed if it is generated.
+     *
+     * @var bool
+     */
+    private $echoDebugLog = false;
+
+    /**
+     * The debug log generated by the calculation engine.
+     *
+     * @var string[]
+     */
+    private $debugLog = [];
+
+    /**
+     * The calculation engine cell reference stack.
+     *
+     * @var CyclicReferenceStack
+     */
+    private $cellStack;
+
+    /**
+     * Instantiate a Calculation engine logger.
+     *
+     * @param CyclicReferenceStack $stack
+     */
+    public function __construct(CyclicReferenceStack $stack)
+    {
+        $this->cellStack = $stack;
+    }
+
+    /**
+     * Enable/Disable Calculation engine logging.
+     *
+     * @param bool $pValue
+     */
+    public function setWriteDebugLog($pValue)
+    {
+        $this->writeDebugLog = $pValue;
+    }
+
+    /**
+     * Return whether calculation engine logging is enabled or disabled.
+     *
+     * @return bool
+     */
+    public function getWriteDebugLog()
+    {
+        return $this->writeDebugLog;
+    }
+
+    /**
+     * Enable/Disable echoing of debug log information.
+     *
+     * @param bool $pValue
+     */
+    public function setEchoDebugLog($pValue)
+    {
+        $this->echoDebugLog = $pValue;
+    }
+
+    /**
+     * Return whether echoing of debug log information is enabled or disabled.
+     *
+     * @return bool
+     */
+    public function getEchoDebugLog()
+    {
+        return $this->echoDebugLog;
+    }
+
+    /**
+     * Write an entry to the calculation engine debug log.
+     */
+    public function writeDebugLog(...$args)
+    {
+        //    Only write the debug log if logging is enabled
+        if ($this->writeDebugLog) {
+            $message = implode($args);
+            $cellReference = implode(' -> ', $this->cellStack->showStack());
+            if ($this->echoDebugLog) {
+                echo $cellReference,
+                    ($this->cellStack->count() > 0 ? ' => ' : ''),
+                    $message,
+                    PHP_EOL;
+            }
+            $this->debugLog[] = $cellReference .
+                ($this->cellStack->count() > 0 ? ' => ' : '') .
+                $message;
+        }
+    }
+
+    /**
+     * Clear the calculation engine debug log.
+     */
+    public function clearLog()
+    {
+        $this->debugLog = [];
+    }
+
+    /**
+     * Return the calculation engine debug log.
+     *
+     * @return string[]
+     */
+    public function getLog()
+    {
+        return $this->debugLog;
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/Exception.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
+
+class Exception extends PhpSpreadsheetException
+{
+    /**
+     * Error handler callback.
+     *
+     * @param mixed $code
+     * @param mixed $string
+     * @param mixed $file
+     * @param mixed $line
+     * @param mixed $context
+     */
+    public static function errorHandlerCallback($code, $string, $file, $line, $context)
+    {
+        $e = new self($string, $code);
+        $e->line = $line;
+        $e->file = $file;
+
+        throw $e;
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/ExceptionHandler.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+class ExceptionHandler
+{
+    /**
+     * Register errorhandler.
+     */
+    public function __construct()
+    {
+        set_error_handler([Exception::class, 'errorHandlerCallback'], E_ALL);
+    }
+
+    /**
+     * Unregister errorhandler.
+     */
+    public function __destruct()
+    {
+        restore_error_handler();
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/FormulaParser.php

@@ -0,0 +1,623 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+/**
+ * PARTLY BASED ON:
+ * Copyright (c) 2007 E. W. Bachtal, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * The software is provided "as is", without warranty of any kind, express or implied, including but not
+ * limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In
+ * no event shall the authors or copyright holders be liable for any claim, damages or other liability,
+ * whether in an action of contract, tort or otherwise, arising from, out of or in connection with the
+ * software or the use or other dealings in the software.
+ *
+ * https://ewbi.blogs.com/develops/2007/03/excel_formula_p.html
+ * https://ewbi.blogs.com/develops/2004/12/excel_formula_p.html
+ */
+class FormulaParser
+{
+    // Character constants
+    const QUOTE_DOUBLE = '"';
+    const QUOTE_SINGLE = '\'';
+    const BRACKET_CLOSE = ']';
+    const BRACKET_OPEN = '[';
+    const BRACE_OPEN = '{';
+    const BRACE_CLOSE = '}';
+    const PAREN_OPEN = '(';
+    const PAREN_CLOSE = ')';
+    const SEMICOLON = ';';
+    const WHITESPACE = ' ';
+    const COMMA = ',';
+    const ERROR_START = '#';
+
+    const OPERATORS_SN = '+-';
+    const OPERATORS_INFIX = '+-*/^&=><';
+    const OPERATORS_POSTFIX = '%';
+
+    /**
+     * Formula.
+     *
+     * @var string
+     */
+    private $formula;
+
+    /**
+     * Tokens.
+     *
+     * @var FormulaToken[]
+     */
+    private $tokens = [];
+
+    /**
+     * Create a new FormulaParser.
+     *
+     * @param string $pFormula Formula to parse
+     *
+     * @throws Exception
+     */
+    public function __construct($pFormula = '')
+    {
+        // Check parameters
+        if ($pFormula === null) {
+            throw new Exception('Invalid parameter passed: formula');
+        }
+
+        // Initialise values
+        $this->formula = trim($pFormula);
+        // Parse!
+        $this->parseToTokens();
+    }
+
+    /**
+     * Get Formula.
+     *
+     * @return string
+     */
+    public function getFormula()
+    {
+        return $this->formula;
+    }
+
+    /**
+     * Get Token.
+     *
+     * @param int $pId Token id
+     *
+     * @throws Exception
+     *
+     * @return string
+     */
+    public function getToken($pId = 0)
+    {
+        if (isset($this->tokens[$pId])) {
+            return $this->tokens[$pId];
+        }
+
+        throw new Exception("Token with id $pId does not exist.");
+    }
+
+    /**
+     * Get Token count.
+     *
+     * @return int
+     */
+    public function getTokenCount()
+    {
+        return count($this->tokens);
+    }
+
+    /**
+     * Get Tokens.
+     *
+     * @return FormulaToken[]
+     */
+    public function getTokens()
+    {
+        return $this->tokens;
+    }
+
+    /**
+     * Parse to tokens.
+     */
+    private function parseToTokens()
+    {
+        // No attempt is made to verify formulas; assumes formulas are derived from Excel, where
+        // they can only exist if valid; stack overflows/underflows sunk as nulls without exceptions.
+
+        // Check if the formula has a valid starting =
+        $formulaLength = strlen($this->formula);
+        if ($formulaLength < 2 || $this->formula[0] != '=') {
+            return;
+        }
+
+        // Helper variables
+        $tokens1 = $tokens2 = $stack = [];
+        $inString = $inPath = $inRange = $inError = false;
+        $token = $previousToken = $nextToken = null;
+
+        $index = 1;
+        $value = '';
+
+        $ERRORS = ['#NULL!', '#DIV/0!', '#VALUE!', '#REF!', '#NAME?', '#NUM!', '#N/A'];
+        $COMPARATORS_MULTI = ['>=', '<=', '<>'];
+
+        while ($index < $formulaLength) {
+            // state-dependent character evaluation (order is important)
+
+            // double-quoted strings
+            // embeds are doubled
+            // end marks token
+            if ($inString) {
+                if ($this->formula[$index] == self::QUOTE_DOUBLE) {
+                    if ((($index + 2) <= $formulaLength) && ($this->formula[$index + 1] == self::QUOTE_DOUBLE)) {
+                        $value .= self::QUOTE_DOUBLE;
+                        ++$index;
+                    } else {
+                        $inString = false;
+                        $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND, FormulaToken::TOKEN_SUBTYPE_TEXT);
+                        $value = '';
+                    }
+                } else {
+                    $value .= $this->formula[$index];
+                }
+                ++$index;
+
+                continue;
+            }
+
+            // single-quoted strings (links)
+            // embeds are double
+            // end does not mark a token
+            if ($inPath) {
+                if ($this->formula[$index] == self::QUOTE_SINGLE) {
+                    if ((($index + 2) <= $formulaLength) && ($this->formula[$index + 1] == self::QUOTE_SINGLE)) {
+                        $value .= self::QUOTE_SINGLE;
+                        ++$index;
+                    } else {
+                        $inPath = false;
+                    }
+                } else {
+                    $value .= $this->formula[$index];
+                }
+                ++$index;
+
+                continue;
+            }
+
+            // bracked strings (R1C1 range index or linked workbook name)
+            // no embeds (changed to "()" by Excel)
+            // end does not mark a token
+            if ($inRange) {
+                if ($this->formula[$index] == self::BRACKET_CLOSE) {
+                    $inRange = false;
+                }
+                $value .= $this->formula[$index];
+                ++$index;
+
+                continue;
+            }
+
+            // error values
+            // end marks a token, determined from absolute list of values
+            if ($inError) {
+                $value .= $this->formula[$index];
+                ++$index;
+                if (in_array($value, $ERRORS)) {
+                    $inError = false;
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND, FormulaToken::TOKEN_SUBTYPE_ERROR);
+                    $value = '';
+                }
+
+                continue;
+            }
+
+            // scientific notation check
+            if (strpos(self::OPERATORS_SN, $this->formula[$index]) !== false) {
+                if (strlen($value) > 1) {
+                    if (preg_match('/^[1-9]{1}(\\.\\d+)?E{1}$/', $this->formula[$index]) != 0) {
+                        $value .= $this->formula[$index];
+                        ++$index;
+
+                        continue;
+                    }
+                }
+            }
+
+            // independent character evaluation (order not important)
+
+            // establish state-dependent character evaluations
+            if ($this->formula[$index] == self::QUOTE_DOUBLE) {
+                if (strlen($value) > 0) {
+                    // unexpected
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_UNKNOWN);
+                    $value = '';
+                }
+                $inString = true;
+                ++$index;
+
+                continue;
+            }
+
+            if ($this->formula[$index] == self::QUOTE_SINGLE) {
+                if (strlen($value) > 0) {
+                    // unexpected
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_UNKNOWN);
+                    $value = '';
+                }
+                $inPath = true;
+                ++$index;
+
+                continue;
+            }
+
+            if ($this->formula[$index] == self::BRACKET_OPEN) {
+                $inRange = true;
+                $value .= self::BRACKET_OPEN;
+                ++$index;
+
+                continue;
+            }
+
+            if ($this->formula[$index] == self::ERROR_START) {
+                if (strlen($value) > 0) {
+                    // unexpected
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_UNKNOWN);
+                    $value = '';
+                }
+                $inError = true;
+                $value .= self::ERROR_START;
+                ++$index;
+
+                continue;
+            }
+
+            // mark start and end of arrays and array rows
+            if ($this->formula[$index] == self::BRACE_OPEN) {
+                if (strlen($value) > 0) {
+                    // unexpected
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_UNKNOWN);
+                    $value = '';
+                }
+
+                $tmp = new FormulaToken('ARRAY', FormulaToken::TOKEN_TYPE_FUNCTION, FormulaToken::TOKEN_SUBTYPE_START);
+                $tokens1[] = $tmp;
+                $stack[] = clone $tmp;
+
+                $tmp = new FormulaToken('ARRAYROW', FormulaToken::TOKEN_TYPE_FUNCTION, FormulaToken::TOKEN_SUBTYPE_START);
+                $tokens1[] = $tmp;
+                $stack[] = clone $tmp;
+
+                ++$index;
+
+                continue;
+            }
+
+            if ($this->formula[$index] == self::SEMICOLON) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+
+                $tmp = array_pop($stack);
+                $tmp->setValue('');
+                $tmp->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_STOP);
+                $tokens1[] = $tmp;
+
+                $tmp = new FormulaToken(',', FormulaToken::TOKEN_TYPE_ARGUMENT);
+                $tokens1[] = $tmp;
+
+                $tmp = new FormulaToken('ARRAYROW', FormulaToken::TOKEN_TYPE_FUNCTION, FormulaToken::TOKEN_SUBTYPE_START);
+                $tokens1[] = $tmp;
+                $stack[] = clone $tmp;
+
+                ++$index;
+
+                continue;
+            }
+
+            if ($this->formula[$index] == self::BRACE_CLOSE) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+
+                $tmp = array_pop($stack);
+                $tmp->setValue('');
+                $tmp->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_STOP);
+                $tokens1[] = $tmp;
+
+                $tmp = array_pop($stack);
+                $tmp->setValue('');
+                $tmp->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_STOP);
+                $tokens1[] = $tmp;
+
+                ++$index;
+
+                continue;
+            }
+
+            // trim white-space
+            if ($this->formula[$index] == self::WHITESPACE) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+                $tokens1[] = new FormulaToken('', FormulaToken::TOKEN_TYPE_WHITESPACE);
+                ++$index;
+                while (($this->formula[$index] == self::WHITESPACE) && ($index < $formulaLength)) {
+                    ++$index;
+                }
+
+                continue;
+            }
+
+            // multi-character comparators
+            if (($index + 2) <= $formulaLength) {
+                if (in_array(substr($this->formula, $index, 2), $COMPARATORS_MULTI)) {
+                    if (strlen($value) > 0) {
+                        $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                        $value = '';
+                    }
+                    $tokens1[] = new FormulaToken(substr($this->formula, $index, 2), FormulaToken::TOKEN_TYPE_OPERATORINFIX, FormulaToken::TOKEN_SUBTYPE_LOGICAL);
+                    $index += 2;
+
+                    continue;
+                }
+            }
+
+            // standard infix operators
+            if (strpos(self::OPERATORS_INFIX, $this->formula[$index]) !== false) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+                $tokens1[] = new FormulaToken($this->formula[$index], FormulaToken::TOKEN_TYPE_OPERATORINFIX);
+                ++$index;
+
+                continue;
+            }
+
+            // standard postfix operators (only one)
+            if (strpos(self::OPERATORS_POSTFIX, $this->formula[$index]) !== false) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+                $tokens1[] = new FormulaToken($this->formula[$index], FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX);
+                ++$index;
+
+                continue;
+            }
+
+            // start subexpression or function
+            if ($this->formula[$index] == self::PAREN_OPEN) {
+                if (strlen($value) > 0) {
+                    $tmp = new FormulaToken($value, FormulaToken::TOKEN_TYPE_FUNCTION, FormulaToken::TOKEN_SUBTYPE_START);
+                    $tokens1[] = $tmp;
+                    $stack[] = clone $tmp;
+                    $value = '';
+                } else {
+                    $tmp = new FormulaToken('', FormulaToken::TOKEN_TYPE_SUBEXPRESSION, FormulaToken::TOKEN_SUBTYPE_START);
+                    $tokens1[] = $tmp;
+                    $stack[] = clone $tmp;
+                }
+                ++$index;
+
+                continue;
+            }
+
+            // function, subexpression, or array parameters, or operand unions
+            if ($this->formula[$index] == self::COMMA) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+
+                $tmp = array_pop($stack);
+                $tmp->setValue('');
+                $tmp->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_STOP);
+                $stack[] = $tmp;
+
+                if ($tmp->getTokenType() == FormulaToken::TOKEN_TYPE_FUNCTION) {
+                    $tokens1[] = new FormulaToken(',', FormulaToken::TOKEN_TYPE_OPERATORINFIX, FormulaToken::TOKEN_SUBTYPE_UNION);
+                } else {
+                    $tokens1[] = new FormulaToken(',', FormulaToken::TOKEN_TYPE_ARGUMENT);
+                }
+                ++$index;
+
+                continue;
+            }
+
+            // stop subexpression
+            if ($this->formula[$index] == self::PAREN_CLOSE) {
+                if (strlen($value) > 0) {
+                    $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+                    $value = '';
+                }
+
+                $tmp = array_pop($stack);
+                $tmp->setValue('');
+                $tmp->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_STOP);
+                $tokens1[] = $tmp;
+
+                ++$index;
+
+                continue;
+            }
+
+            // token accumulation
+            $value .= $this->formula[$index];
+            ++$index;
+        }
+
+        // dump remaining accumulation
+        if (strlen($value) > 0) {
+            $tokens1[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERAND);
+        }
+
+        // move tokenList to new set, excluding unnecessary white-space tokens and converting necessary ones to intersections
+        $tokenCount = count($tokens1);
+        for ($i = 0; $i < $tokenCount; ++$i) {
+            $token = $tokens1[$i];
+            if (isset($tokens1[$i - 1])) {
+                $previousToken = $tokens1[$i - 1];
+            } else {
+                $previousToken = null;
+            }
+            if (isset($tokens1[$i + 1])) {
+                $nextToken = $tokens1[$i + 1];
+            } else {
+                $nextToken = null;
+            }
+
+            if ($token === null) {
+                continue;
+            }
+
+            if ($token->getTokenType() != FormulaToken::TOKEN_TYPE_WHITESPACE) {
+                $tokens2[] = $token;
+
+                continue;
+            }
+
+            if ($previousToken === null) {
+                continue;
+            }
+
+            if (!(
+                (($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+                (($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+                ($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_OPERAND)
+            )) {
+                continue;
+            }
+
+            if ($nextToken === null) {
+                continue;
+            }
+
+            if (!(
+                (($nextToken->getTokenType() == FormulaToken::TOKEN_TYPE_FUNCTION) && ($nextToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_START)) ||
+                (($nextToken->getTokenType() == FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($nextToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_START)) ||
+                ($nextToken->getTokenType() == FormulaToken::TOKEN_TYPE_OPERAND)
+            )) {
+                continue;
+            }
+
+            $tokens2[] = new FormulaToken($value, FormulaToken::TOKEN_TYPE_OPERATORINFIX, FormulaToken::TOKEN_SUBTYPE_INTERSECTION);
+        }
+
+        // move tokens to final list, switching infix "-" operators to prefix when appropriate, switching infix "+" operators
+        // to noop when appropriate, identifying operand and infix-operator subtypes, and pulling "@" from function names
+        $this->tokens = [];
+
+        $tokenCount = count($tokens2);
+        for ($i = 0; $i < $tokenCount; ++$i) {
+            $token = $tokens2[$i];
+            if (isset($tokens2[$i - 1])) {
+                $previousToken = $tokens2[$i - 1];
+            } else {
+                $previousToken = null;
+            }
+            if (isset($tokens2[$i + 1])) {
+                $nextToken = $tokens2[$i + 1];
+            } else {
+                $nextToken = null;
+            }
+
+            if ($token === null) {
+                continue;
+            }
+
+            if ($token->getTokenType() == FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getValue() == '-') {
+                if ($i == 0) {
+                    $token->setTokenType(FormulaToken::TOKEN_TYPE_OPERATORPREFIX);
+                } elseif ((($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_FUNCTION) &&
+                        ($previousToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+                    (($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_SUBEXPRESSION) &&
+                        ($previousToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+                    ($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX) ||
+                    ($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_OPERAND)) {
+                    $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_MATH);
+                } else {
+                    $token->setTokenType(FormulaToken::TOKEN_TYPE_OPERATORPREFIX);
+                }
+
+                $this->tokens[] = $token;
+
+                continue;
+            }
+
+            if ($token->getTokenType() == FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getValue() == '+') {
+                if ($i == 0) {
+                    continue;
+                } elseif ((($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_FUNCTION) &&
+                        ($previousToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+                    (($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_SUBEXPRESSION) &&
+                        ($previousToken->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+                    ($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX) ||
+                    ($previousToken->getTokenType() == FormulaToken::TOKEN_TYPE_OPERAND)) {
+                    $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_MATH);
+                } else {
+                    continue;
+                }
+
+                $this->tokens[] = $token;
+
+                continue;
+            }
+
+            if ($token->getTokenType() == FormulaToken::TOKEN_TYPE_OPERATORINFIX &&
+                $token->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_NOTHING) {
+                if (strpos('<>=', substr($token->getValue(), 0, 1)) !== false) {
+                    $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_LOGICAL);
+                } elseif ($token->getValue() == '&') {
+                    $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_CONCATENATION);
+                } else {
+                    $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_MATH);
+                }
+
+                $this->tokens[] = $token;
+
+                continue;
+            }
+
+            if ($token->getTokenType() == FormulaToken::TOKEN_TYPE_OPERAND &&
+                $token->getTokenSubType() == FormulaToken::TOKEN_SUBTYPE_NOTHING) {
+                if (!is_numeric($token->getValue())) {
+                    if (strtoupper($token->getValue()) == 'TRUE' || strtoupper($token->getValue()) == 'FALSE') {
+                        $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_LOGICAL);
+                    } else {
+                        $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_RANGE);
+                    }
+                } else {
+                    $token->setTokenSubType(FormulaToken::TOKEN_SUBTYPE_NUMBER);
+                }
+
+                $this->tokens[] = $token;
+
+                continue;
+            }
+
+            if ($token->getTokenType() == FormulaToken::TOKEN_TYPE_FUNCTION) {
+                if (strlen($token->getValue()) > 0) {
+                    if (substr($token->getValue(), 0, 1) == '@') {
+                        $token->setValue(substr($token->getValue(), 1));
+                    }
+                }
+            }
+
+            $this->tokens[] = $token;
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/FormulaToken.php

@@ -0,0 +1,150 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+/**
+ * PARTLY BASED ON:
+ * Copyright (c) 2007 E. W. Bachtal, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * The software is provided "as is", without warranty of any kind, express or implied, including but not
+ * limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In
+ * no event shall the authors or copyright holders be liable for any claim, damages or other liability,
+ * whether in an action of contract, tort or otherwise, arising from, out of or in connection with the
+ * software or the use or other dealings in the software.
+ *
+ * https://ewbi.blogs.com/develops/2007/03/excel_formula_p.html
+ * https://ewbi.blogs.com/develops/2004/12/excel_formula_p.html
+ */
+class FormulaToken
+{
+    // Token types
+    const TOKEN_TYPE_NOOP = 'Noop';
+    const TOKEN_TYPE_OPERAND = 'Operand';
+    const TOKEN_TYPE_FUNCTION = 'Function';
+    const TOKEN_TYPE_SUBEXPRESSION = 'Subexpression';
+    const TOKEN_TYPE_ARGUMENT = 'Argument';
+    const TOKEN_TYPE_OPERATORPREFIX = 'OperatorPrefix';
+    const TOKEN_TYPE_OPERATORINFIX = 'OperatorInfix';
+    const TOKEN_TYPE_OPERATORPOSTFIX = 'OperatorPostfix';
+    const TOKEN_TYPE_WHITESPACE = 'Whitespace';
+    const TOKEN_TYPE_UNKNOWN = 'Unknown';
+
+    // Token subtypes
+    const TOKEN_SUBTYPE_NOTHING = 'Nothing';
+    const TOKEN_SUBTYPE_START = 'Start';
+    const TOKEN_SUBTYPE_STOP = 'Stop';
+    const TOKEN_SUBTYPE_TEXT = 'Text';
+    const TOKEN_SUBTYPE_NUMBER = 'Number';
+    const TOKEN_SUBTYPE_LOGICAL = 'Logical';
+    const TOKEN_SUBTYPE_ERROR = 'Error';
+    const TOKEN_SUBTYPE_RANGE = 'Range';
+    const TOKEN_SUBTYPE_MATH = 'Math';
+    const TOKEN_SUBTYPE_CONCATENATION = 'Concatenation';
+    const TOKEN_SUBTYPE_INTERSECTION = 'Intersection';
+    const TOKEN_SUBTYPE_UNION = 'Union';
+
+    /**
+     * Value.
+     *
+     * @var string
+     */
+    private $value;
+
+    /**
+     * Token Type (represented by TOKEN_TYPE_*).
+     *
+     * @var string
+     */
+    private $tokenType;
+
+    /**
+     * Token SubType (represented by TOKEN_SUBTYPE_*).
+     *
+     * @var string
+     */
+    private $tokenSubType;
+
+    /**
+     * Create a new FormulaToken.
+     *
+     * @param string $pValue
+     * @param string $pTokenType Token type (represented by TOKEN_TYPE_*)
+     * @param string $pTokenSubType Token Subtype (represented by TOKEN_SUBTYPE_*)
+     */
+    public function __construct($pValue, $pTokenType = self::TOKEN_TYPE_UNKNOWN, $pTokenSubType = self::TOKEN_SUBTYPE_NOTHING)
+    {
+        // Initialise values
+        $this->value = $pValue;
+        $this->tokenType = $pTokenType;
+        $this->tokenSubType = $pTokenSubType;
+    }
+
+    /**
+     * Get Value.
+     *
+     * @return string
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Set Value.
+     *
+     * @param string $value
+     */
+    public function setValue($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * Get Token Type (represented by TOKEN_TYPE_*).
+     *
+     * @return string
+     */
+    public function getTokenType()
+    {
+        return $this->tokenType;
+    }
+
+    /**
+     * Set Token Type (represented by TOKEN_TYPE_*).
+     *
+     * @param string $value
+     */
+    public function setTokenType($value)
+    {
+        $this->tokenType = $value;
+    }
+
+    /**
+     * Get Token SubType (represented by TOKEN_SUBTYPE_*).
+     *
+     * @return string
+     */
+    public function getTokenSubType()
+    {
+        return $this->tokenSubType;
+    }
+
+    /**
+     * Set Token SubType (represented by TOKEN_SUBTYPE_*).
+     *
+     * @param string $value
+     */
+    public function setTokenSubType($value)
+    {
+        $this->tokenSubType = $value;
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/Functions.php

@@ -0,0 +1,678 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+use PhpOffice\PhpSpreadsheet\Cell\Cell;
+
+class Functions
+{
+    const PRECISION = 8.88E-016;
+
+    /**
+     * 2 / PI.
+     */
+    const M_2DIVPI = 0.63661977236758134307553505349006;
+
+    /** constants */
+    const COMPATIBILITY_EXCEL = 'Excel';
+    const COMPATIBILITY_GNUMERIC = 'Gnumeric';
+    const COMPATIBILITY_OPENOFFICE = 'OpenOfficeCalc';
+
+    const RETURNDATE_PHP_NUMERIC = 'P';
+    const RETURNDATE_UNIX_TIMESTAMP = 'P';
+    const RETURNDATE_PHP_OBJECT = 'O';
+    const RETURNDATE_PHP_DATETIME_OBJECT = 'O';
+    const RETURNDATE_EXCEL = 'E';
+
+    /**
+     * Compatibility mode to use for error checking and responses.
+     *
+     * @var string
+     */
+    protected static $compatibilityMode = self::COMPATIBILITY_EXCEL;
+
+    /**
+     * Data Type to use when returning date values.
+     *
+     * @var string
+     */
+    protected static $returnDateType = self::RETURNDATE_EXCEL;
+
+    /**
+     * List of error codes.
+     *
+     * @var array
+     */
+    protected static $errorCodes = [
+        'null' => '#NULL!',
+        'divisionbyzero' => '#DIV/0!',
+        'value' => '#VALUE!',
+        'reference' => '#REF!',
+        'name' => '#NAME?',
+        'num' => '#NUM!',
+        'na' => '#N/A',
+        'gettingdata' => '#GETTING_DATA',
+    ];
+
+    /**
+     * Set the Compatibility Mode.
+     *
+     * @category Function Configuration
+     *
+     * @param string $compatibilityMode Compatibility Mode
+     *                                                Permitted values are:
+     *                                                    Functions::COMPATIBILITY_EXCEL            'Excel'
+     *                                                    Functions::COMPATIBILITY_GNUMERIC        'Gnumeric'
+     *                                                    Functions::COMPATIBILITY_OPENOFFICE    'OpenOfficeCalc'
+     *
+     * @return bool (Success or Failure)
+     */
+    public static function setCompatibilityMode($compatibilityMode)
+    {
+        if (($compatibilityMode == self::COMPATIBILITY_EXCEL) ||
+            ($compatibilityMode == self::COMPATIBILITY_GNUMERIC) ||
+            ($compatibilityMode == self::COMPATIBILITY_OPENOFFICE)
+        ) {
+            self::$compatibilityMode = $compatibilityMode;
+
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Return the current Compatibility Mode.
+     *
+     * @category Function Configuration
+     *
+     * @return string Compatibility Mode
+     *                            Possible Return values are:
+     *                                Functions::COMPATIBILITY_EXCEL            'Excel'
+     *                                Functions::COMPATIBILITY_GNUMERIC        'Gnumeric'
+     *                                Functions::COMPATIBILITY_OPENOFFICE    'OpenOfficeCalc'
+     */
+    public static function getCompatibilityMode()
+    {
+        return self::$compatibilityMode;
+    }
+
+    /**
+     * Set the Return Date Format used by functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object).
+     *
+     * @category Function Configuration
+     *
+     * @param string $returnDateType Return Date Format
+     *                                                Permitted values are:
+     *                                                    Functions::RETURNDATE_UNIX_TIMESTAMP        'P'
+     *                                                    Functions::RETURNDATE_PHP_DATETIME_OBJECT        'O'
+     *                                                    Functions::RETURNDATE_EXCEL            'E'
+     *
+     * @return bool Success or failure
+     */
+    public static function setReturnDateType($returnDateType)
+    {
+        if (($returnDateType == self::RETURNDATE_UNIX_TIMESTAMP) ||
+            ($returnDateType == self::RETURNDATE_PHP_DATETIME_OBJECT) ||
+            ($returnDateType == self::RETURNDATE_EXCEL)
+        ) {
+            self::$returnDateType = $returnDateType;
+
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Return the current Return Date Format for functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object).
+     *
+     * @category Function Configuration
+     *
+     * @return string Return Date Format
+     *                            Possible Return values are:
+     *                                Functions::RETURNDATE_UNIX_TIMESTAMP        'P'
+     *                                Functions::RETURNDATE_PHP_DATETIME_OBJECT        'O'
+     *                                Functions::RETURNDATE_EXCEL            'E'
+     */
+    public static function getReturnDateType()
+    {
+        return self::$returnDateType;
+    }
+
+    /**
+     * DUMMY.
+     *
+     * @category Error Returns
+     *
+     * @return string #Not Yet Implemented
+     */
+    public static function DUMMY()
+    {
+        return '#Not Yet Implemented';
+    }
+
+    /**
+     * DIV0.
+     *
+     * @category Error Returns
+     *
+     * @return string #Not Yet Implemented
+     */
+    public static function DIV0()
+    {
+        return self::$errorCodes['divisionbyzero'];
+    }
+
+    /**
+     * NA.
+     *
+     * Excel Function:
+     *        =NA()
+     *
+     * Returns the error value #N/A
+     *        #N/A is the error value that means "no value is available."
+     *
+     * @category Logical Functions
+     *
+     * @return string #N/A!
+     */
+    public static function NA()
+    {
+        return self::$errorCodes['na'];
+    }
+
+    /**
+     * NaN.
+     *
+     * Returns the error value #NUM!
+     *
+     * @category Error Returns
+     *
+     * @return string #NUM!
+     */
+    public static function NAN()
+    {
+        return self::$errorCodes['num'];
+    }
+
+    /**
+     * NAME.
+     *
+     * Returns the error value #NAME?
+     *
+     * @category Error Returns
+     *
+     * @return string #NAME?
+     */
+    public static function NAME()
+    {
+        return self::$errorCodes['name'];
+    }
+
+    /**
+     * REF.
+     *
+     * Returns the error value #REF!
+     *
+     * @category Error Returns
+     *
+     * @return string #REF!
+     */
+    public static function REF()
+    {
+        return self::$errorCodes['reference'];
+    }
+
+    /**
+     * NULL.
+     *
+     * Returns the error value #NULL!
+     *
+     * @category Error Returns
+     *
+     * @return string #NULL!
+     */
+    public static function null()
+    {
+        return self::$errorCodes['null'];
+    }
+
+    /**
+     * VALUE.
+     *
+     * Returns the error value #VALUE!
+     *
+     * @category Error Returns
+     *
+     * @return string #VALUE!
+     */
+    public static function VALUE()
+    {
+        return self::$errorCodes['value'];
+    }
+
+    public static function isMatrixValue($idx)
+    {
+        return (substr_count($idx, '.') <= 1) || (preg_match('/\.[A-Z]/', $idx) > 0);
+    }
+
+    public static function isValue($idx)
+    {
+        return substr_count($idx, '.') == 0;
+    }
+
+    public static function isCellValue($idx)
+    {
+        return substr_count($idx, '.') > 1;
+    }
+
+    public static function ifCondition($condition)
+    {
+        $condition = self::flattenSingleValue($condition);
+        if (!isset($condition[0]) && !is_numeric($condition)) {
+            $condition = '=""';
+        }
+        if (!in_array($condition[0], ['>', '<', '='])) {
+            if (!is_numeric($condition)) {
+                $condition = Calculation::wrapResult(strtoupper($condition));
+            }
+
+            return '=' . $condition;
+        }
+        preg_match('/(=|<[>=]?|>=?)(.*)/', $condition, $matches);
+        [, $operator, $operand] = $matches;
+
+        if (is_numeric(trim($operand, '"'))) {
+            $operand = trim($operand, '"');
+        } elseif (!is_numeric($operand)) {
+            $operand = str_replace('"', '""', $operand);
+            $operand = Calculation::wrapResult(strtoupper($operand));
+        }
+
+        return $operator . $operand;
+    }
+
+    /**
+     * ERROR_TYPE.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function errorType($value = '')
+    {
+        $value = self::flattenSingleValue($value);
+
+        $i = 1;
+        foreach (self::$errorCodes as $errorCode) {
+            if ($value === $errorCode) {
+                return $i;
+            }
+            ++$i;
+        }
+
+        return self::NA();
+    }
+
+    /**
+     * IS_BLANK.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isBlank($value = null)
+    {
+        if ($value !== null) {
+            $value = self::flattenSingleValue($value);
+        }
+
+        return $value === null;
+    }
+
+    /**
+     * IS_ERR.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isErr($value = '')
+    {
+        $value = self::flattenSingleValue($value);
+
+        return self::isError($value) && (!self::isNa(($value)));
+    }
+
+    /**
+     * IS_ERROR.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isError($value = '')
+    {
+        $value = self::flattenSingleValue($value);
+
+        if (!is_string($value)) {
+            return false;
+        }
+
+        return in_array($value, self::$errorCodes);
+    }
+
+    /**
+     * IS_NA.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isNa($value = '')
+    {
+        $value = self::flattenSingleValue($value);
+
+        return $value === self::NA();
+    }
+
+    /**
+     * IS_EVEN.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool|string
+     */
+    public static function isEven($value = null)
+    {
+        $value = self::flattenSingleValue($value);
+
+        if ($value === null) {
+            return self::NAME();
+        } elseif ((is_bool($value)) || ((is_string($value)) && (!is_numeric($value)))) {
+            return self::VALUE();
+        }
+
+        return $value % 2 == 0;
+    }
+
+    /**
+     * IS_ODD.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool|string
+     */
+    public static function isOdd($value = null)
+    {
+        $value = self::flattenSingleValue($value);
+
+        if ($value === null) {
+            return self::NAME();
+        } elseif ((is_bool($value)) || ((is_string($value)) && (!is_numeric($value)))) {
+            return self::VALUE();
+        }
+
+        return abs($value) % 2 == 1;
+    }
+
+    /**
+     * IS_NUMBER.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isNumber($value = null)
+    {
+        $value = self::flattenSingleValue($value);
+
+        if (is_string($value)) {
+            return false;
+        }
+
+        return is_numeric($value);
+    }
+
+    /**
+     * IS_LOGICAL.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isLogical($value = null)
+    {
+        $value = self::flattenSingleValue($value);
+
+        return is_bool($value);
+    }
+
+    /**
+     * IS_TEXT.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isText($value = null)
+    {
+        $value = self::flattenSingleValue($value);
+
+        return is_string($value) && !self::isError($value);
+    }
+
+    /**
+     * IS_NONTEXT.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function isNonText($value = null)
+    {
+        return !self::isText($value);
+    }
+
+    /**
+     * N.
+     *
+     * Returns a value converted to a number
+     *
+     * @param null|mixed $value The value you want converted
+     *
+     * @return number N converts values listed in the following table
+     *        If value is or refers to N returns
+     *        A number            That number
+     *        A date                The serial number of that date
+     *        TRUE                1
+     *        FALSE                0
+     *        An error value        The error value
+     *        Anything else        0
+     */
+    public static function n($value = null)
+    {
+        while (is_array($value)) {
+            $value = array_shift($value);
+        }
+
+        switch (gettype($value)) {
+            case 'double':
+            case 'float':
+            case 'integer':
+                return $value;
+            case 'boolean':
+                return (int) $value;
+            case 'string':
+                //    Errors
+                if ((strlen($value) > 0) && ($value[0] == '#')) {
+                    return $value;
+                }
+
+                break;
+        }
+
+        return 0;
+    }
+
+    /**
+     * TYPE.
+     *
+     * Returns a number that identifies the type of a value
+     *
+     * @param null|mixed $value The value you want tested
+     *
+     * @return number N converts values listed in the following table
+     *        If value is or refers to N returns
+     *        A number            1
+     *        Text                2
+     *        Logical Value        4
+     *        An error value        16
+     *        Array or Matrix        64
+     */
+    public static function TYPE($value = null)
+    {
+        $value = self::flattenArrayIndexed($value);
+        if (is_array($value) && (count($value) > 1)) {
+            end($value);
+            $a = key($value);
+            //    Range of cells is an error
+            if (self::isCellValue($a)) {
+                return 16;
+            //    Test for Matrix
+            } elseif (self::isMatrixValue($a)) {
+                return 64;
+            }
+        } elseif (empty($value)) {
+            //    Empty Cell
+            return 1;
+        }
+        $value = self::flattenSingleValue($value);
+
+        if (($value === null) || (is_float($value)) || (is_int($value))) {
+            return 1;
+        } elseif (is_bool($value)) {
+            return 4;
+        } elseif (is_array($value)) {
+            return 64;
+        } elseif (is_string($value)) {
+            //    Errors
+            if ((strlen($value) > 0) && ($value[0] == '#')) {
+                return 16;
+            }
+
+            return 2;
+        }
+
+        return 0;
+    }
+
+    /**
+     * Convert a multi-dimensional array to a simple 1-dimensional array.
+     *
+     * @param array $array Array to be flattened
+     *
+     * @return array Flattened array
+     */
+    public static function flattenArray($array)
+    {
+        if (!is_array($array)) {
+            return (array) $array;
+        }
+
+        $arrayValues = [];
+        foreach ($array as $value) {
+            if (is_array($value)) {
+                foreach ($value as $val) {
+                    if (is_array($val)) {
+                        foreach ($val as $v) {
+                            $arrayValues[] = $v;
+                        }
+                    } else {
+                        $arrayValues[] = $val;
+                    }
+                }
+            } else {
+                $arrayValues[] = $value;
+            }
+        }
+
+        return $arrayValues;
+    }
+
+    /**
+     * Convert a multi-dimensional array to a simple 1-dimensional array, but retain an element of indexing.
+     *
+     * @param array $array Array to be flattened
+     *
+     * @return array Flattened array
+     */
+    public static function flattenArrayIndexed($array)
+    {
+        if (!is_array($array)) {
+            return (array) $array;
+        }
+
+        $arrayValues = [];
+        foreach ($array as $k1 => $value) {
+            if (is_array($value)) {
+                foreach ($value as $k2 => $val) {
+                    if (is_array($val)) {
+                        foreach ($val as $k3 => $v) {
+                            $arrayValues[$k1 . '.' . $k2 . '.' . $k3] = $v;
+                        }
+                    } else {
+                        $arrayValues[$k1 . '.' . $k2] = $val;
+                    }
+                }
+            } else {
+                $arrayValues[$k1] = $value;
+            }
+        }
+
+        return $arrayValues;
+    }
+
+    /**
+     * Convert an array to a single scalar value by extracting the first element.
+     *
+     * @param mixed $value Array or scalar value
+     *
+     * @return mixed
+     */
+    public static function flattenSingleValue($value = '')
+    {
+        while (is_array($value)) {
+            $value = array_pop($value);
+        }
+
+        return $value;
+    }
+
+    /**
+     * ISFORMULA.
+     *
+     * @param mixed $cellReference The cell to check
+     * @param Cell $pCell The current cell (containing this formula)
+     *
+     * @return bool|string
+     */
+    public static function isFormula($cellReference = '', Cell $pCell = null)
+    {
+        if ($pCell === null) {
+            return self::REF();
+        }
+
+        preg_match('/^' . Calculation::CALCULATION_REGEXP_CELLREF . '$/i', $cellReference, $matches);
+
+        $cellReference = $matches[6] . $matches[7];
+        $worksheetName = trim($matches[3], "'");
+
+        $worksheet = (!empty($worksheetName))
+            ? $pCell->getWorksheet()->getParent()->getSheetByName($worksheetName)
+            : $pCell->getWorksheet();
+
+        return $worksheet->getCell($cellReference)->isFormula();
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/Logical.php

@@ -0,0 +1,371 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+class Logical
+{
+    /**
+     * TRUE.
+     *
+     * Returns the boolean TRUE.
+     *
+     * Excel Function:
+     *        =TRUE()
+     *
+     * @category Logical Functions
+     *
+     * @return bool True
+     */
+    public static function true()
+    {
+        return true;
+    }
+
+    /**
+     * FALSE.
+     *
+     * Returns the boolean FALSE.
+     *
+     * Excel Function:
+     *        =FALSE()
+     *
+     * @category Logical Functions
+     *
+     * @return bool False
+     */
+    public static function false()
+    {
+        return false;
+    }
+
+    private static function countTrueValues(array $args)
+    {
+        $returnValue = 0;
+
+        foreach ($args as $arg) {
+            // Is it a boolean value?
+            if (is_bool($arg)) {
+                $returnValue += $arg;
+            } elseif ((is_numeric($arg)) && (!is_string($arg))) {
+                $returnValue += ((int) $arg != 0);
+            } elseif (is_string($arg)) {
+                $arg = strtoupper($arg);
+                if (($arg == 'TRUE') || ($arg == Calculation::getTRUE())) {
+                    $arg = true;
+                } elseif (($arg == 'FALSE') || ($arg == Calculation::getFALSE())) {
+                    $arg = false;
+                } else {
+                    return Functions::VALUE();
+                }
+                $returnValue += ($arg != 0);
+            }
+        }
+
+        return $returnValue;
+    }
+
+    /**
+     * LOGICAL_AND.
+     *
+     * Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE.
+     *
+     * Excel Function:
+     *        =AND(logical1[,logical2[, ...]])
+     *
+     *        The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+     *            or references that contain logical values.
+     *
+     *        Boolean arguments are treated as True or False as appropriate
+     *        Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+     *        If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+     *            the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+     *
+     * @category Logical Functions
+     *
+     * @param mixed ...$args Data values
+     *
+     * @return bool|string the logical AND of the arguments
+     */
+    public static function logicalAnd(...$args)
+    {
+        $args = Functions::flattenArray($args);
+
+        if (count($args) == 0) {
+            return Functions::VALUE();
+        }
+
+        $args = array_filter($args, function ($value) {
+            return $value !== null || (is_string($value) && trim($value) == '');
+        });
+        $argCount = count($args);
+
+        $returnValue = self::countTrueValues($args);
+        if (is_string($returnValue)) {
+            return $returnValue;
+        }
+
+        return ($returnValue > 0) && ($returnValue == $argCount);
+    }
+
+    /**
+     * LOGICAL_OR.
+     *
+     * Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.
+     *
+     * Excel Function:
+     *        =OR(logical1[,logical2[, ...]])
+     *
+     *        The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+     *            or references that contain logical values.
+     *
+     *        Boolean arguments are treated as True or False as appropriate
+     *        Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+     *        If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+     *            the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $args Data values
+     *
+     * @return bool|string the logical OR of the arguments
+     */
+    public static function logicalOr(...$args)
+    {
+        $args = Functions::flattenArray($args);
+
+        if (count($args) == 0) {
+            return Functions::VALUE();
+        }
+
+        $args = array_filter($args, function ($value) {
+            return $value !== null || (is_string($value) && trim($value) == '');
+        });
+
+        $returnValue = self::countTrueValues($args);
+        if (is_string($returnValue)) {
+            return $returnValue;
+        }
+
+        return $returnValue > 0;
+    }
+
+    /**
+     * LOGICAL_XOR.
+     *
+     * Returns the Exclusive Or logical operation for one or more supplied conditions.
+     * i.e. the Xor function returns TRUE if an odd number of the supplied conditions evaluate to TRUE, and FALSE otherwise.
+     *
+     * Excel Function:
+     *        =XOR(logical1[,logical2[, ...]])
+     *
+     *        The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+     *            or references that contain logical values.
+     *
+     *        Boolean arguments are treated as True or False as appropriate
+     *        Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+     *        If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+     *            the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $args Data values
+     *
+     * @return bool|string the logical XOR of the arguments
+     */
+    public static function logicalXor(...$args)
+    {
+        $args = Functions::flattenArray($args);
+
+        if (count($args) == 0) {
+            return Functions::VALUE();
+        }
+
+        $args = array_filter($args, function ($value) {
+            return $value !== null || (is_string($value) && trim($value) == '');
+        });
+
+        $returnValue = self::countTrueValues($args);
+        if (is_string($returnValue)) {
+            return $returnValue;
+        }
+
+        return $returnValue % 2 == 1;
+    }
+
+    /**
+     * NOT.
+     *
+     * Returns the boolean inverse of the argument.
+     *
+     * Excel Function:
+     *        =NOT(logical)
+     *
+     *        The argument must evaluate to a logical value such as TRUE or FALSE
+     *
+     *        Boolean arguments are treated as True or False as appropriate
+     *        Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+     *        If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+     *            the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $logical A value or expression that can be evaluated to TRUE or FALSE
+     *
+     * @return bool|string the boolean inverse of the argument
+     */
+    public static function NOT($logical = false)
+    {
+        $logical = Functions::flattenSingleValue($logical);
+
+        if (is_string($logical)) {
+            $logical = strtoupper($logical);
+            if (($logical == 'TRUE') || ($logical == Calculation::getTRUE())) {
+                return false;
+            } elseif (($logical == 'FALSE') || ($logical == Calculation::getFALSE())) {
+                return true;
+            }
+
+            return Functions::VALUE();
+        }
+
+        return !$logical;
+    }
+
+    /**
+     * STATEMENT_IF.
+     *
+     * Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE.
+     *
+     * Excel Function:
+     *        =IF(condition[,returnIfTrue[,returnIfFalse]])
+     *
+     *        Condition is any value or expression that can be evaluated to TRUE or FALSE.
+     *            For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100,
+     *            the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE.
+     *            This argument can use any comparison calculation operator.
+     *        ReturnIfTrue is the value that is returned if condition evaluates to TRUE.
+     *            For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE,
+     *            then the IF function returns the text "Within budget"
+     *            If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use
+     *            the logical value TRUE for this argument.
+     *            ReturnIfTrue can be another formula.
+     *        ReturnIfFalse is the value that is returned if condition evaluates to FALSE.
+     *            For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE,
+     *            then the IF function returns the text "Over budget".
+     *            If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned.
+     *            If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned.
+     *            ReturnIfFalse can be another formula.
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $condition Condition to evaluate
+     * @param mixed $returnIfTrue Value to return when condition is true
+     * @param mixed $returnIfFalse Optional value to return when condition is false
+     *
+     * @return mixed The value of returnIfTrue or returnIfFalse determined by condition
+     */
+    public static function statementIf($condition = true, $returnIfTrue = 0, $returnIfFalse = false)
+    {
+        $condition = ($condition === null) ? true : (bool) Functions::flattenSingleValue($condition);
+        $returnIfTrue = ($returnIfTrue === null) ? 0 : Functions::flattenSingleValue($returnIfTrue);
+        $returnIfFalse = ($returnIfFalse === null) ? false : Functions::flattenSingleValue($returnIfFalse);
+
+        return ($condition) ? $returnIfTrue : $returnIfFalse;
+    }
+
+    /**
+     * STATEMENT_SWITCH.
+     *
+     * Returns corresponding with first match (any data type such as a string, numeric, date, etc).
+     *
+     * Excel Function:
+     *        =SWITCH (expression, value1, result1, value2, result2, ... value_n, result_n [, default])
+     *
+     *        Expression
+     *              The expression to compare to a list of values.
+     *        value1, value2, ... value_n
+     *              A list of values that are compared to expression. The SWITCH function is looking for the first value that matches the expression.
+     *        result1, result2, ... result_n
+     *              A list of results. The SWITCH function returns the corresponding result when a value matches expression.
+     *         default
+     *              Optional. It is the default to return if expression does not match any of the values (value1, value2, ... value_n).
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $arguments Statement arguments
+     *
+     * @return mixed The value of matched expression
+     */
+    public static function statementSwitch(...$arguments)
+    {
+        $result = Functions::VALUE();
+
+        if (count($arguments) > 0) {
+            $targetValue = Functions::flattenSingleValue($arguments[0]);
+            $argc = count($arguments) - 1;
+            $switchCount = floor($argc / 2);
+            $switchSatisfied = false;
+            $hasDefaultClause = $argc % 2 !== 0;
+            $defaultClause = $argc % 2 === 0 ? null : $arguments[count($arguments) - 1];
+
+            if ($switchCount) {
+                for ($index = 0; $index < $switchCount; ++$index) {
+                    if ($targetValue == $arguments[$index * 2 + 1]) {
+                        $result = $arguments[$index * 2 + 2];
+                        $switchSatisfied = true;
+
+                        break;
+                    }
+                }
+            }
+
+            if (!$switchSatisfied) {
+                $result = $hasDefaultClause ? $defaultClause : Functions::NA();
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * IFERROR.
+     *
+     * Excel Function:
+     *        =IFERROR(testValue,errorpart)
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $testValue Value to check, is also the value returned when no error
+     * @param mixed $errorpart Value to return when testValue is an error condition
+     *
+     * @return mixed The value of errorpart or testValue determined by error condition
+     */
+    public static function IFERROR($testValue = '', $errorpart = '')
+    {
+        $testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue);
+        $errorpart = ($errorpart === null) ? '' : Functions::flattenSingleValue($errorpart);
+
+        return self::statementIf(Functions::isError($testValue), $errorpart, $testValue);
+    }
+
+    /**
+     * IFNA.
+     *
+     * Excel Function:
+     *        =IFNA(testValue,napart)
+     *
+     * @category Logical Functions
+     *
+     * @param mixed $testValue Value to check, is also the value returned when not an NA
+     * @param mixed $napart Value to return when testValue is an NA condition
+     *
+     * @return mixed The value of errorpart or testValue determined by error condition
+     */
+    public static function IFNA($testValue = '', $napart = '')
+    {
+        $testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue);
+        $napart = ($napart === null) ? '' : Functions::flattenSingleValue($napart);
+
+        return self::statementIf(Functions::isNa($testValue), $napart, $testValue);
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/LookupRef.php

@@ -0,0 +1,968 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+use PhpOffice\PhpSpreadsheet\Cell\Cell;
+use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class LookupRef
+{
+    /**
+     * CELL_ADDRESS.
+     *
+     * Creates a cell address as text, given specified row and column numbers.
+     *
+     * Excel Function:
+     *        =ADDRESS(row, column, [relativity], [referenceStyle], [sheetText])
+     *
+     * @param mixed $row Row number to use in the cell reference
+     * @param mixed $column Column number to use in the cell reference
+     * @param int $relativity Flag indicating the type of reference to return
+     *                                1 or omitted    Absolute
+     *                                2                Absolute row; relative column
+     *                                3                Relative row; absolute column
+     *                                4                Relative
+     * @param bool $referenceStyle A logical value that specifies the A1 or R1C1 reference style.
+     *                                TRUE or omitted        CELL_ADDRESS returns an A1-style reference
+     *                                FALSE                CELL_ADDRESS returns an R1C1-style reference
+     * @param string $sheetText Optional Name of worksheet to use
+     *
+     * @return string
+     */
+    public static function cellAddress($row, $column, $relativity = 1, $referenceStyle = true, $sheetText = '')
+    {
+        $row = Functions::flattenSingleValue($row);
+        $column = Functions::flattenSingleValue($column);
+        $relativity = Functions::flattenSingleValue($relativity);
+        $sheetText = Functions::flattenSingleValue($sheetText);
+
+        if (($row < 1) || ($column < 1)) {
+            return Functions::VALUE();
+        }
+
+        if ($sheetText > '') {
+            if (strpos($sheetText, ' ') !== false) {
+                $sheetText = "'" . $sheetText . "'";
+            }
+            $sheetText .= '!';
+        }
+        if ((!is_bool($referenceStyle)) || $referenceStyle) {
+            $rowRelative = $columnRelative = '$';
+            $column = Coordinate::stringFromColumnIndex($column);
+            if (($relativity == 2) || ($relativity == 4)) {
+                $columnRelative = '';
+            }
+            if (($relativity == 3) || ($relativity == 4)) {
+                $rowRelative = '';
+            }
+
+            return $sheetText . $columnRelative . $column . $rowRelative . $row;
+        }
+        if (($relativity == 2) || ($relativity == 4)) {
+            $column = '[' . $column . ']';
+        }
+        if (($relativity == 3) || ($relativity == 4)) {
+            $row = '[' . $row . ']';
+        }
+
+        return $sheetText . 'R' . $row . 'C' . $column;
+    }
+
+    /**
+     * COLUMN.
+     *
+     * Returns the column number of the given cell reference
+     * If the cell reference is a range of cells, COLUMN returns the column numbers of each column in the reference as a horizontal array.
+     * If cell reference is omitted, and the function is being called through the calculation engine, then it is assumed to be the
+     *        reference of the cell in which the COLUMN function appears; otherwise this function returns 0.
+     *
+     * Excel Function:
+     *        =COLUMN([cellAddress])
+     *
+     * @param null|array|string $cellAddress A reference to a range of cells for which you want the column numbers
+     *
+     * @return int|int[]
+     */
+    public static function COLUMN($cellAddress = null)
+    {
+        if ($cellAddress === null || trim($cellAddress) === '') {
+            return 0;
+        }
+
+        if (is_array($cellAddress)) {
+            foreach ($cellAddress as $columnKey => $value) {
+                $columnKey = preg_replace('/[^a-z]/i', '', $columnKey);
+
+                return (int) Coordinate::columnIndexFromString($columnKey);
+            }
+        } else {
+            [$sheet, $cellAddress] = Worksheet::extractSheetTitle($cellAddress, true);
+            if (strpos($cellAddress, ':') !== false) {
+                [$startAddress, $endAddress] = explode(':', $cellAddress);
+                $startAddress = preg_replace('/[^a-z]/i', '', $startAddress);
+                $endAddress = preg_replace('/[^a-z]/i', '', $endAddress);
+                $returnValue = [];
+                do {
+                    $returnValue[] = (int) Coordinate::columnIndexFromString($startAddress);
+                } while ($startAddress++ != $endAddress);
+
+                return $returnValue;
+            }
+            $cellAddress = preg_replace('/[^a-z]/i', '', $cellAddress);
+
+            return (int) Coordinate::columnIndexFromString($cellAddress);
+        }
+    }
+
+    /**
+     * COLUMNS.
+     *
+     * Returns the number of columns in an array or reference.
+     *
+     * Excel Function:
+     *        =COLUMNS(cellAddress)
+     *
+     * @param null|array|string $cellAddress An array or array formula, or a reference to a range of cells for which you want the number of columns
+     *
+     * @return int The number of columns in cellAddress
+     */
+    public static function COLUMNS($cellAddress = null)
+    {
+        if ($cellAddress === null || $cellAddress === '') {
+            return 1;
+        } elseif (!is_array($cellAddress)) {
+            return Functions::VALUE();
+        }
+
+        reset($cellAddress);
+        $isMatrix = (is_numeric(key($cellAddress)));
+        [$columns, $rows] = Calculation::getMatrixDimensions($cellAddress);
+
+        if ($isMatrix) {
+            return $rows;
+        }
+
+        return $columns;
+    }
+
+    /**
+     * ROW.
+     *
+     * Returns the row number of the given cell reference
+     * If the cell reference is a range of cells, ROW returns the row numbers of each row in the reference as a vertical array.
+     * If cell reference is omitted, and the function is being called through the calculation engine, then it is assumed to be the
+     *        reference of the cell in which the ROW function appears; otherwise this function returns 0.
+     *
+     * Excel Function:
+     *        =ROW([cellAddress])
+     *
+     * @param null|array|string $cellAddress A reference to a range of cells for which you want the row numbers
+     *
+     * @return int or array of integer
+     */
+    public static function ROW($cellAddress = null)
+    {
+        if ($cellAddress === null || trim($cellAddress) === '') {
+            return 0;
+        }
+
+        if (is_array($cellAddress)) {
+            foreach ($cellAddress as $columnKey => $rowValue) {
+                foreach ($rowValue as $rowKey => $cellValue) {
+                    return (int) preg_replace('/\D/', '', $rowKey);
+                }
+            }
+        } else {
+            [$sheet, $cellAddress] = Worksheet::extractSheetTitle($cellAddress, true);
+            if (strpos($cellAddress, ':') !== false) {
+                [$startAddress, $endAddress] = explode(':', $cellAddress);
+                $startAddress = preg_replace('/\D/', '', $startAddress);
+                $endAddress = preg_replace('/\D/', '', $endAddress);
+                $returnValue = [];
+                do {
+                    $returnValue[][] = (int) $startAddress;
+                } while ($startAddress++ != $endAddress);
+
+                return $returnValue;
+            }
+            [$cellAddress] = explode(':', $cellAddress);
+
+            return (int) preg_replace('/\D/', '', $cellAddress);
+        }
+    }
+
+    /**
+     * ROWS.
+     *
+     * Returns the number of rows in an array or reference.
+     *
+     * Excel Function:
+     *        =ROWS(cellAddress)
+     *
+     * @param null|array|string $cellAddress An array or array formula, or a reference to a range of cells for which you want the number of rows
+     *
+     * @return int The number of rows in cellAddress
+     */
+    public static function ROWS($cellAddress = null)
+    {
+        if ($cellAddress === null || $cellAddress === '') {
+            return 1;
+        } elseif (!is_array($cellAddress)) {
+            return Functions::VALUE();
+        }
+
+        reset($cellAddress);
+        $isMatrix = (is_numeric(key($cellAddress)));
+        [$columns, $rows] = Calculation::getMatrixDimensions($cellAddress);
+
+        if ($isMatrix) {
+            return $columns;
+        }
+
+        return $rows;
+    }
+
+    /**
+     * HYPERLINK.
+     *
+     * Excel Function:
+     *        =HYPERLINK(linkURL,displayName)
+     *
+     * @category Logical Functions
+     *
+     * @param string $linkURL Value to check, is also the value returned when no error
+     * @param string $displayName Value to return when testValue is an error condition
+     * @param Cell $pCell The cell to set the hyperlink in
+     *
+     * @return mixed The value of $displayName (or $linkURL if $displayName was blank)
+     */
+    public static function HYPERLINK($linkURL = '', $displayName = null, Cell $pCell = null)
+    {
+        $linkURL = ($linkURL === null) ? '' : Functions::flattenSingleValue($linkURL);
+        $displayName = ($displayName === null) ? '' : Functions::flattenSingleValue($displayName);
+
+        if ((!is_object($pCell)) || (trim($linkURL) == '')) {
+            return Functions::REF();
+        }
+
+        if ((is_object($displayName)) || trim($displayName) == '') {
+            $displayName = $linkURL;
+        }
+
+        $pCell->getHyperlink()->setUrl($linkURL);
+        $pCell->getHyperlink()->setTooltip($displayName);
+
+        return $displayName;
+    }
+
+    /**
+     * INDIRECT.
+     *
+     * Returns the reference specified by a text string.
+     * References are immediately evaluated to display their contents.
+     *
+     * Excel Function:
+     *        =INDIRECT(cellAddress)
+     *
+     * NOTE - INDIRECT() does not yet support the optional a1 parameter introduced in Excel 2010
+     *
+     * @param null|array|string $cellAddress $cellAddress The cell address of the current cell (containing this formula)
+     * @param Cell $pCell The current cell (containing this formula)
+     *
+     * @return mixed The cells referenced by cellAddress
+     *
+     * @todo    Support for the optional a1 parameter introduced in Excel 2010
+     */
+    public static function INDIRECT($cellAddress = null, Cell $pCell = null)
+    {
+        $cellAddress = Functions::flattenSingleValue($cellAddress);
+        if ($cellAddress === null || $cellAddress === '') {
+            return Functions::REF();
+        }
+
+        $cellAddress1 = $cellAddress;
+        $cellAddress2 = null;
+        if (strpos($cellAddress, ':') !== false) {
+            [$cellAddress1, $cellAddress2] = explode(':', $cellAddress);
+        }
+
+        if ((!preg_match('/^' . Calculation::CALCULATION_REGEXP_CELLREF . '$/i', $cellAddress1, $matches)) ||
+            (($cellAddress2 !== null) && (!preg_match('/^' . Calculation::CALCULATION_REGEXP_CELLREF . '$/i', $cellAddress2, $matches)))) {
+            if (!preg_match('/^' . Calculation::CALCULATION_REGEXP_NAMEDRANGE . '$/i', $cellAddress1, $matches)) {
+                return Functions::REF();
+            }
+
+            if (strpos($cellAddress, '!') !== false) {
+                [$sheetName, $cellAddress] = Worksheet::extractSheetTitle($cellAddress, true);
+                $sheetName = trim($sheetName, "'");
+                $pSheet = $pCell->getWorksheet()->getParent()->getSheetByName($sheetName);
+            } else {
+                $pSheet = $pCell->getWorksheet();
+            }
+
+            return Calculation::getInstance()->extractNamedRange($cellAddress, $pSheet, false);
+        }
+
+        if (strpos($cellAddress, '!') !== false) {
+            [$sheetName, $cellAddress] = Worksheet::extractSheetTitle($cellAddress, true);
+            $sheetName = trim($sheetName, "'");
+            $pSheet = $pCell->getWorksheet()->getParent()->getSheetByName($sheetName);
+        } else {
+            $pSheet = $pCell->getWorksheet();
+        }
+
+        return Calculation::getInstance()->extractCellRange($cellAddress, $pSheet, false);
+    }
+
+    /**
+     * OFFSET.
+     *
+     * Returns a reference to a range that is a specified number of rows and columns from a cell or range of cells.
+     * The reference that is returned can be a single cell or a range of cells. You can specify the number of rows and
+     * the number of columns to be returned.
+     *
+     * Excel Function:
+     *        =OFFSET(cellAddress, rows, cols, [height], [width])
+     *
+     * @param null|string $cellAddress The reference from which you want to base the offset. Reference must refer to a cell or
+     *                                range of adjacent cells; otherwise, OFFSET returns the #VALUE! error value.
+     * @param mixed $rows The number of rows, up or down, that you want the upper-left cell to refer to.
+     *                                Using 5 as the rows argument specifies that the upper-left cell in the reference is
+     *                                five rows below reference. Rows can be positive (which means below the starting reference)
+     *                                or negative (which means above the starting reference).
+     * @param mixed $columns The number of columns, to the left or right, that you want the upper-left cell of the result
+     *                                to refer to. Using 5 as the cols argument specifies that the upper-left cell in the
+     *                                reference is five columns to the right of reference. Cols can be positive (which means
+     *                                to the right of the starting reference) or negative (which means to the left of the
+     *                                starting reference).
+     * @param mixed $height The height, in number of rows, that you want the returned reference to be. Height must be a positive number.
+     * @param mixed $width The width, in number of columns, that you want the returned reference to be. Width must be a positive number.
+     * @param null|Cell $pCell
+     *
+     * @return string A reference to a cell or range of cells
+     */
+    public static function OFFSET($cellAddress = null, $rows = 0, $columns = 0, $height = null, $width = null, Cell $pCell = null)
+    {
+        $rows = Functions::flattenSingleValue($rows);
+        $columns = Functions::flattenSingleValue($columns);
+        $height = Functions::flattenSingleValue($height);
+        $width = Functions::flattenSingleValue($width);
+        if ($cellAddress === null) {
+            return 0;
+        }
+
+        if (!is_object($pCell)) {
+            return Functions::REF();
+        }
+
+        $sheetName = null;
+        if (strpos($cellAddress, '!')) {
+            [$sheetName, $cellAddress] = Worksheet::extractSheetTitle($cellAddress, true);
+            $sheetName = trim($sheetName, "'");
+        }
+        if (strpos($cellAddress, ':')) {
+            [$startCell, $endCell] = explode(':', $cellAddress);
+        } else {
+            $startCell = $endCell = $cellAddress;
+        }
+        [$startCellColumn, $startCellRow] = Coordinate::coordinateFromString($startCell);
+        [$endCellColumn, $endCellRow] = Coordinate::coordinateFromString($endCell);
+
+        $startCellRow += $rows;
+        $startCellColumn = Coordinate::columnIndexFromString($startCellColumn) - 1;
+        $startCellColumn += $columns;
+
+        if (($startCellRow <= 0) || ($startCellColumn < 0)) {
+            return Functions::REF();
+        }
+        $endCellColumn = Coordinate::columnIndexFromString($endCellColumn) - 1;
+        if (($width != null) && (!is_object($width))) {
+            $endCellColumn = $startCellColumn + $width - 1;
+        } else {
+            $endCellColumn += $columns;
+        }
+        $startCellColumn = Coordinate::stringFromColumnIndex($startCellColumn + 1);
+
+        if (($height != null) && (!is_object($height))) {
+            $endCellRow = $startCellRow + $height - 1;
+        } else {
+            $endCellRow += $rows;
+        }
+
+        if (($endCellRow <= 0) || ($endCellColumn < 0)) {
+            return Functions::REF();
+        }
+        $endCellColumn = Coordinate::stringFromColumnIndex($endCellColumn + 1);
+
+        $cellAddress = $startCellColumn . $startCellRow;
+        if (($startCellColumn != $endCellColumn) || ($startCellRow != $endCellRow)) {
+            $cellAddress .= ':' . $endCellColumn . $endCellRow;
+        }
+
+        if ($sheetName !== null) {
+            $pSheet = $pCell->getWorksheet()->getParent()->getSheetByName($sheetName);
+        } else {
+            $pSheet = $pCell->getWorksheet();
+        }
+
+        return Calculation::getInstance()->extractCellRange($cellAddress, $pSheet, false);
+    }
+
+    /**
+     * CHOOSE.
+     *
+     * Uses lookup_value to return a value from the list of value arguments.
+     * Use CHOOSE to select one of up to 254 values based on the lookup_value.
+     *
+     * Excel Function:
+     *        =CHOOSE(index_num, value1, [value2], ...)
+     *
+     * @param mixed $index_num Specifies which value argument is selected.
+     *                            Index_num must be a number between 1 and 254, or a formula or reference to a cell containing a number
+     *                                between 1 and 254.
+     * @param mixed $value1 ... Value1 is required, subsequent values are optional.
+     *                            Between 1 to 254 value arguments from which CHOOSE selects a value or an action to perform based on
+     *                                index_num. The arguments can be numbers, cell references, defined names, formulas, functions, or
+     *                                text.
+     *
+     * @return mixed The selected value
+     */
+    public static function CHOOSE(...$chooseArgs)
+    {
+        $chosenEntry = Functions::flattenArray(array_shift($chooseArgs));
+        $entryCount = count($chooseArgs) - 1;
+
+        if (is_array($chosenEntry)) {
+            $chosenEntry = array_shift($chosenEntry);
+        }
+        if ((is_numeric($chosenEntry)) && (!is_bool($chosenEntry))) {
+            --$chosenEntry;
+        } else {
+            return Functions::VALUE();
+        }
+        $chosenEntry = floor($chosenEntry);
+        if (($chosenEntry < 0) || ($chosenEntry > $entryCount)) {
+            return Functions::VALUE();
+        }
+
+        if (is_array($chooseArgs[$chosenEntry])) {
+            return Functions::flattenArray($chooseArgs[$chosenEntry]);
+        }
+
+        return $chooseArgs[$chosenEntry];
+    }
+
+    /**
+     * MATCH.
+     *
+     * The MATCH function searches for a specified item in a range of cells
+     *
+     * Excel Function:
+     *        =MATCH(lookup_value, lookup_array, [match_type])
+     *
+     * @param mixed $lookupValue The value that you want to match in lookup_array
+     * @param mixed $lookupArray The range of cells being searched
+     * @param mixed $matchType The number -1, 0, or 1. -1 means above, 0 means exact match, 1 means below.
+     *                         If match_type is 1 or -1, the list has to be ordered.
+     *
+     * @return int|string The relative position of the found item
+     */
+    public static function MATCH($lookupValue, $lookupArray, $matchType = 1)
+    {
+        $lookupArray = Functions::flattenArray($lookupArray);
+        $lookupValue = Functions::flattenSingleValue($lookupValue);
+        $matchType = ($matchType === null) ? 1 : (int) Functions::flattenSingleValue($matchType);
+
+        // MATCH is not case sensitive, so we convert lookup value to be lower cased in case it's string type.
+        if (is_string($lookupValue)) {
+            $lookupValue = StringHelper::strToLower($lookupValue);
+        }
+
+        // Lookup_value type has to be number, text, or logical values
+        if ((!is_numeric($lookupValue)) && (!is_string($lookupValue)) && (!is_bool($lookupValue))) {
+            return Functions::NA();
+        }
+
+        // Match_type is 0, 1 or -1
+        if (($matchType !== 0) && ($matchType !== -1) && ($matchType !== 1)) {
+            return Functions::NA();
+        }
+
+        // Lookup_array should not be empty
+        $lookupArraySize = count($lookupArray);
+        if ($lookupArraySize <= 0) {
+            return Functions::NA();
+        }
+
+        // Lookup_array should contain only number, text, or logical values, or empty (null) cells
+        foreach ($lookupArray as $i => $lookupArrayValue) {
+            //    check the type of the value
+            if ((!is_numeric($lookupArrayValue)) && (!is_string($lookupArrayValue)) &&
+                (!is_bool($lookupArrayValue)) && ($lookupArrayValue !== null)
+            ) {
+                return Functions::NA();
+            }
+            // Convert strings to lowercase for case-insensitive testing
+            if (is_string($lookupArrayValue)) {
+                $lookupArray[$i] = StringHelper::strToLower($lookupArrayValue);
+            }
+            if (($lookupArrayValue === null) && (($matchType == 1) || ($matchType == -1))) {
+                $lookupArray = array_slice($lookupArray, 0, $i - 1);
+            }
+        }
+
+        if ($matchType == 1) {
+            // If match_type is 1 the list has to be processed from last to first
+
+            $lookupArray = array_reverse($lookupArray);
+            $keySet = array_reverse(array_keys($lookupArray));
+        }
+
+        // **
+        // find the match
+        // **
+
+        if ($matchType === 0 || $matchType === 1) {
+            foreach ($lookupArray as $i => $lookupArrayValue) {
+                $typeMatch = gettype($lookupValue) === gettype($lookupArrayValue);
+                $exactTypeMatch = $typeMatch && $lookupArrayValue === $lookupValue;
+                $nonOnlyNumericExactMatch = !$typeMatch && $lookupArrayValue === $lookupValue;
+                $exactMatch = $exactTypeMatch || $nonOnlyNumericExactMatch;
+
+                if ($matchType === 0) {
+                    if ($typeMatch && is_string($lookupValue) && (bool) preg_match('/([\?\*])/', $lookupValue)) {
+                        $splitString = $lookupValue;
+                        $chars = array_map(function ($i) use ($splitString) {
+                            return mb_substr($splitString, $i, 1);
+                        }, range(0, mb_strlen($splitString) - 1));
+
+                        $length = count($chars);
+                        $pattern = '/^';
+                        for ($j = 0; $j < $length; ++$j) {
+                            if ($chars[$j] === '~') {
+                                if (isset($chars[$j + 1])) {
+                                    if ($chars[$j + 1] === '*') {
+                                        $pattern .= preg_quote($chars[$j + 1], '/');
+                                        ++$j;
+                                    } elseif ($chars[$j + 1] === '?') {
+                                        $pattern .= preg_quote($chars[$j + 1], '/');
+                                        ++$j;
+                                    }
+                                } else {
+                                    $pattern .= preg_quote($chars[$j], '/');
+                                }
+                            } elseif ($chars[$j] === '*') {
+                                $pattern .= '.*';
+                            } elseif ($chars[$j] === '?') {
+                                $pattern .= '.{1}';
+                            } else {
+                                $pattern .= preg_quote($chars[$j], '/');
+                            }
+                        }
+
+                        $pattern .= '$/';
+                        if ((bool) preg_match($pattern, $lookupArrayValue)) {
+                            // exact match
+                            return $i + 1;
+                        }
+                    } elseif ($exactMatch) {
+                        // exact match
+                        return $i + 1;
+                    }
+                } elseif (($matchType === 1) && $typeMatch && ($lookupArrayValue <= $lookupValue)) {
+                    $i = array_search($i, $keySet);
+
+                    // The current value is the (first) match
+                    return $i + 1;
+                }
+            }
+        } else {
+            $maxValueKey = null;
+
+            // The basic algorithm is:
+            // Iterate and keep the highest match until the next element is smaller than the searched value.
+            // Return immediately if perfect match is found
+            foreach ($lookupArray as $i => $lookupArrayValue) {
+                $typeMatch = gettype($lookupValue) === gettype($lookupArrayValue);
+                $exactTypeMatch = $typeMatch && $lookupArrayValue === $lookupValue;
+                $nonOnlyNumericExactMatch = !$typeMatch && $lookupArrayValue === $lookupValue;
+                $exactMatch = $exactTypeMatch || $nonOnlyNumericExactMatch;
+
+                if ($exactMatch) {
+                    // Another "special" case. If a perfect match is found,
+                    // the algorithm gives up immediately
+                    return $i + 1;
+                } elseif ($typeMatch & $lookupArrayValue >= $lookupValue) {
+                    $maxValueKey = $i + 1;
+                } elseif ($typeMatch & $lookupArrayValue < $lookupValue) {
+                    //Excel algorithm gives up immediately if the first element is smaller than the searched value
+                    break;
+                }
+            }
+
+            if ($maxValueKey !== null) {
+                return $maxValueKey;
+            }
+        }
+
+        // Unsuccessful in finding a match, return #N/A error value
+        return Functions::NA();
+    }
+
+    /**
+     * INDEX.
+     *
+     * Uses an index to choose a value from a reference or array
+     *
+     * Excel Function:
+     *        =INDEX(range_array, row_num, [column_num])
+     *
+     * @param mixed $arrayValues A range of cells or an array constant
+     * @param mixed $rowNum The row in array from which to return a value. If row_num is omitted, column_num is required.
+     * @param mixed $columnNum The column in array from which to return a value. If column_num is omitted, row_num is required.
+     *
+     * @return mixed the value of a specified cell or array of cells
+     */
+    public static function INDEX($arrayValues, $rowNum = 0, $columnNum = 0)
+    {
+        $rowNum = Functions::flattenSingleValue($rowNum);
+        $columnNum = Functions::flattenSingleValue($columnNum);
+
+        if (($rowNum < 0) || ($columnNum < 0)) {
+            return Functions::VALUE();
+        }
+
+        if (!is_array($arrayValues) || ($rowNum > count($arrayValues))) {
+            return Functions::REF();
+        }
+
+        $rowKeys = array_keys($arrayValues);
+        $columnKeys = @array_keys($arrayValues[$rowKeys[0]]);
+
+        if ($columnNum > count($columnKeys)) {
+            return Functions::VALUE();
+        } elseif ($columnNum == 0) {
+            if ($rowNum == 0) {
+                return $arrayValues;
+            }
+            $rowNum = $rowKeys[--$rowNum];
+            $returnArray = [];
+            foreach ($arrayValues as $arrayColumn) {
+                if (is_array($arrayColumn)) {
+                    if (isset($arrayColumn[$rowNum])) {
+                        $returnArray[] = $arrayColumn[$rowNum];
+                    } else {
+                        return [$rowNum => $arrayValues[$rowNum]];
+                    }
+                } else {
+                    return $arrayValues[$rowNum];
+                }
+            }
+
+            return $returnArray;
+        }
+        $columnNum = $columnKeys[--$columnNum];
+        if ($rowNum > count($rowKeys)) {
+            return Functions::VALUE();
+        } elseif ($rowNum == 0) {
+            return $arrayValues[$columnNum];
+        }
+        $rowNum = $rowKeys[--$rowNum];
+
+        return $arrayValues[$rowNum][$columnNum];
+    }
+
+    /**
+     * TRANSPOSE.
+     *
+     * @param array $matrixData A matrix of values
+     *
+     * @return array
+     *
+     * Unlike the Excel TRANSPOSE function, which will only work on a single row or column, this function will transpose a full matrix
+     */
+    public static function TRANSPOSE($matrixData)
+    {
+        $returnMatrix = [];
+        if (!is_array($matrixData)) {
+            $matrixData = [[$matrixData]];
+        }
+
+        $column = 0;
+        foreach ($matrixData as $matrixRow) {
+            $row = 0;
+            foreach ($matrixRow as $matrixCell) {
+                $returnMatrix[$row][$column] = $matrixCell;
+                ++$row;
+            }
+            ++$column;
+        }
+
+        return $returnMatrix;
+    }
+
+    private static function vlookupSort($a, $b)
+    {
+        reset($a);
+        $firstColumn = key($a);
+        $aLower = StringHelper::strToLower($a[$firstColumn]);
+        $bLower = StringHelper::strToLower($b[$firstColumn]);
+        if ($aLower == $bLower) {
+            return 0;
+        }
+
+        return ($aLower < $bLower) ? -1 : 1;
+    }
+
+    /**
+     * VLOOKUP
+     * The VLOOKUP function searches for value in the left-most column of lookup_array and returns the value in the same row based on the index_number.
+     *
+     * @param mixed $lookup_value The value that you want to match in lookup_array
+     * @param mixed $lookup_array The range of cells being searched
+     * @param mixed $index_number The column number in table_array from which the matching value must be returned. The first column is 1.
+     * @param mixed $not_exact_match determines if you are looking for an exact match based on lookup_value
+     *
+     * @return mixed The value of the found cell
+     */
+    public static function VLOOKUP($lookup_value, $lookup_array, $index_number, $not_exact_match = true)
+    {
+        $lookup_value = Functions::flattenSingleValue($lookup_value);
+        $index_number = Functions::flattenSingleValue($index_number);
+        $not_exact_match = Functions::flattenSingleValue($not_exact_match);
+
+        // index_number must be greater than or equal to 1
+        if ($index_number < 1) {
+            return Functions::VALUE();
+        }
+
+        // index_number must be less than or equal to the number of columns in lookup_array
+        if ((!is_array($lookup_array)) || (empty($lookup_array))) {
+            return Functions::REF();
+        }
+        $f = array_keys($lookup_array);
+        $firstRow = array_pop($f);
+        if ((!is_array($lookup_array[$firstRow])) || ($index_number > count($lookup_array[$firstRow]))) {
+            return Functions::REF();
+        }
+        $columnKeys = array_keys($lookup_array[$firstRow]);
+        $returnColumn = $columnKeys[--$index_number];
+        $firstColumn = array_shift($columnKeys);
+
+        if (!$not_exact_match) {
+            uasort($lookup_array, ['self', 'vlookupSort']);
+        }
+
+        $lookupLower = StringHelper::strToLower($lookup_value);
+        $rowNumber = $rowValue = false;
+        foreach ($lookup_array as $rowKey => $rowData) {
+            $firstLower = StringHelper::strToLower($rowData[$firstColumn]);
+
+            // break if we have passed possible keys
+            if ((is_numeric($lookup_value) && is_numeric($rowData[$firstColumn]) && ($rowData[$firstColumn] > $lookup_value)) ||
+                (!is_numeric($lookup_value) && !is_numeric($rowData[$firstColumn]) && ($firstLower > $lookupLower))) {
+                break;
+            }
+            // remember the last key, but only if datatypes match
+            if ((is_numeric($lookup_value) && is_numeric($rowData[$firstColumn])) ||
+                (!is_numeric($lookup_value) && !is_numeric($rowData[$firstColumn]))) {
+                if ($not_exact_match) {
+                    $rowNumber = $rowKey;
+
+                    continue;
+                } elseif (($firstLower == $lookupLower)
+                    // Spreadsheets software returns first exact match,
+                    // we have sorted and we might have broken key orders
+                    // we want the first one (by its initial index)
+                    && (($rowNumber == false) || ($rowKey < $rowNumber))
+                ) {
+                    $rowNumber = $rowKey;
+                }
+            }
+        }
+
+        if ($rowNumber !== false) {
+            // return the appropriate value
+            return $lookup_array[$rowNumber][$returnColumn];
+        }
+
+        return Functions::NA();
+    }
+
+    /**
+     * HLOOKUP
+     * The HLOOKUP function searches for value in the top-most row of lookup_array and returns the value in the same column based on the index_number.
+     *
+     * @param mixed $lookup_value The value that you want to match in lookup_array
+     * @param mixed $lookup_array The range of cells being searched
+     * @param mixed $index_number The row number in table_array from which the matching value must be returned. The first row is 1.
+     * @param mixed $not_exact_match determines if you are looking for an exact match based on lookup_value
+     *
+     * @return mixed The value of the found cell
+     */
+    public static function HLOOKUP($lookup_value, $lookup_array, $index_number, $not_exact_match = true)
+    {
+        $lookup_value = Functions::flattenSingleValue($lookup_value);
+        $index_number = Functions::flattenSingleValue($index_number);
+        $not_exact_match = Functions::flattenSingleValue($not_exact_match);
+
+        // index_number must be greater than or equal to 1
+        if ($index_number < 1) {
+            return Functions::VALUE();
+        }
+
+        // index_number must be less than or equal to the number of columns in lookup_array
+        if ((!is_array($lookup_array)) || (empty($lookup_array))) {
+            return Functions::REF();
+        }
+        $f = array_keys($lookup_array);
+        $firstRow = array_pop($f);
+        if ((!is_array($lookup_array[$firstRow])) || ($index_number > count($lookup_array))) {
+            return Functions::REF();
+        }
+
+        $firstkey = $f[0] - 1;
+        $returnColumn = $firstkey + $index_number;
+        $firstColumn = array_shift($f);
+        $rowNumber = null;
+        foreach ($lookup_array[$firstColumn] as $rowKey => $rowData) {
+            // break if we have passed possible keys
+            $bothNumeric = is_numeric($lookup_value) && is_numeric($rowData);
+            $bothNotNumeric = !is_numeric($lookup_value) && !is_numeric($rowData);
+            $lookupLower = StringHelper::strToLower($lookup_value);
+            $rowDataLower = StringHelper::strToLower($rowData);
+
+            if ($not_exact_match && (
+                ($bothNumeric && $rowData > $lookup_value) ||
+                ($bothNotNumeric && $rowDataLower > $lookupLower)
+                )) {
+                break;
+            }
+
+            // Remember the last key, but only if datatypes match (as in VLOOKUP)
+            if ($bothNumeric || $bothNotNumeric) {
+                if ($not_exact_match) {
+                    $rowNumber = $rowKey;
+
+                    continue;
+                } elseif ($rowDataLower === $lookupLower
+                    && ($rowNumber === null || $rowKey < $rowNumber)
+                ) {
+                    $rowNumber = $rowKey;
+                }
+            }
+        }
+
+        if ($rowNumber !== null) {
+            //  otherwise return the appropriate value
+            return $lookup_array[$returnColumn][$rowNumber];
+        }
+
+        return Functions::NA();
+    }
+
+    /**
+     * LOOKUP
+     * The LOOKUP function searches for value either from a one-row or one-column range or from an array.
+     *
+     * @param mixed $lookup_value The value that you want to match in lookup_array
+     * @param mixed $lookup_vector The range of cells being searched
+     * @param null|mixed $result_vector The column from which the matching value must be returned
+     *
+     * @return mixed The value of the found cell
+     */
+    public static function LOOKUP($lookup_value, $lookup_vector, $result_vector = null)
+    {
+        $lookup_value = Functions::flattenSingleValue($lookup_value);
+
+        if (!is_array($lookup_vector)) {
+            return Functions::NA();
+        }
+        $hasResultVector = isset($result_vector);
+        $lookupRows = count($lookup_vector);
+        $l = array_keys($lookup_vector);
+        $l = array_shift($l);
+        $lookupColumns = count($lookup_vector[$l]);
+        // we correctly orient our results
+        if (($lookupRows === 1 && $lookupColumns > 1) || (!$hasResultVector && $lookupRows === 2 && $lookupColumns !== 2)) {
+            $lookup_vector = self::TRANSPOSE($lookup_vector);
+            $lookupRows = count($lookup_vector);
+            $l = array_keys($lookup_vector);
+            $lookupColumns = count($lookup_vector[array_shift($l)]);
+        }
+
+        if ($result_vector === null) {
+            $result_vector = $lookup_vector;
+        }
+        $resultRows = count($result_vector);
+        $l = array_keys($result_vector);
+        $l = array_shift($l);
+        $resultColumns = count($result_vector[$l]);
+        // we correctly orient our results
+        if ($resultRows === 1 && $resultColumns > 1) {
+            $result_vector = self::TRANSPOSE($result_vector);
+            $resultRows = count($result_vector);
+            $r = array_keys($result_vector);
+            $resultColumns = count($result_vector[array_shift($r)]);
+        }
+
+        if ($lookupRows === 2 && !$hasResultVector) {
+            $result_vector = array_pop($lookup_vector);
+            $lookup_vector = array_shift($lookup_vector);
+        }
+
+        if ($lookupColumns !== 2) {
+            foreach ($lookup_vector as &$value) {
+                if (is_array($value)) {
+                    $k = array_keys($value);
+                    $key1 = $key2 = array_shift($k);
+                    ++$key2;
+                    $dataValue1 = $value[$key1];
+                } else {
+                    $key1 = 0;
+                    $key2 = 1;
+                    $dataValue1 = $value;
+                }
+                $dataValue2 = array_shift($result_vector);
+                if (is_array($dataValue2)) {
+                    $dataValue2 = array_shift($dataValue2);
+                }
+                $value = [$key1 => $dataValue1, $key2 => $dataValue2];
+            }
+            unset($value);
+        }
+
+        return self::VLOOKUP($lookup_value, $lookup_vector, 2);
+    }
+
+    /**
+     * FORMULATEXT.
+     *
+     * @param mixed $cellReference The cell to check
+     * @param Cell $pCell The current cell (containing this formula)
+     *
+     * @return string
+     */
+    public static function FORMULATEXT($cellReference = '', Cell $pCell = null)
+    {
+        if ($pCell === null) {
+            return Functions::REF();
+        }
+
+        preg_match('/^' . Calculation::CALCULATION_REGEXP_CELLREF . '$/i', $cellReference, $matches);
+
+        $cellReference = $matches[6] . $matches[7];
+        $worksheetName = trim($matches[3], "'");
+        $worksheet = (!empty($worksheetName))
+            ? $pCell->getWorksheet()->getParent()->getSheetByName($worksheetName)
+            : $pCell->getWorksheet();
+
+        if (!$worksheet->getCell($cellReference)->isFormula()) {
+            return Functions::NA();
+        }
+
+        return $worksheet->getCell($cellReference)->getValue();
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/TextData.php

@@ -0,0 +1,672 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation;
+
+use PhpOffice\PhpSpreadsheet\Shared\Date;
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
+
+class TextData
+{
+    private static $invalidChars;
+
+    private static function unicodeToOrd($character)
+    {
+        return unpack('V', iconv('UTF-8', 'UCS-4LE', $character))[1];
+    }
+
+    /**
+     * CHARACTER.
+     *
+     * @param string $character Value
+     *
+     * @return string
+     */
+    public static function CHARACTER($character)
+    {
+        $character = Functions::flattenSingleValue($character);
+
+        if ((!is_numeric($character)) || ($character < 0)) {
+            return Functions::VALUE();
+        }
+
+        if (function_exists('iconv')) {
+            return iconv('UCS-4LE', 'UTF-8', pack('V', $character));
+        }
+
+        return mb_convert_encoding('&#' . (int) $character . ';', 'UTF-8', 'HTML-ENTITIES');
+    }
+
+    /**
+     * TRIMNONPRINTABLE.
+     *
+     * @param mixed $stringValue Value to check
+     *
+     * @return string
+     */
+    public static function TRIMNONPRINTABLE($stringValue = '')
+    {
+        $stringValue = Functions::flattenSingleValue($stringValue);
+
+        if (is_bool($stringValue)) {
+            return ($stringValue) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        if (self::$invalidChars == null) {
+            self::$invalidChars = range(chr(0), chr(31));
+        }
+
+        if (is_string($stringValue) || is_numeric($stringValue)) {
+            return str_replace(self::$invalidChars, '', trim($stringValue, "\x00..\x1F"));
+        }
+
+        return null;
+    }
+
+    /**
+     * TRIMSPACES.
+     *
+     * @param mixed $stringValue Value to check
+     *
+     * @return string
+     */
+    public static function TRIMSPACES($stringValue = '')
+    {
+        $stringValue = Functions::flattenSingleValue($stringValue);
+        if (is_bool($stringValue)) {
+            return ($stringValue) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        if (is_string($stringValue) || is_numeric($stringValue)) {
+            return trim(preg_replace('/ +/', ' ', trim($stringValue, ' ')), ' ');
+        }
+
+        return null;
+    }
+
+    /**
+     * ASCIICODE.
+     *
+     * @param string $characters Value
+     *
+     * @return int
+     */
+    public static function ASCIICODE($characters)
+    {
+        if (($characters === null) || ($characters === '')) {
+            return Functions::VALUE();
+        }
+        $characters = Functions::flattenSingleValue($characters);
+        if (is_bool($characters)) {
+            if (Functions::getCompatibilityMode() == Functions::COMPATIBILITY_OPENOFFICE) {
+                $characters = (int) $characters;
+            } else {
+                $characters = ($characters) ? Calculation::getTRUE() : Calculation::getFALSE();
+            }
+        }
+
+        $character = $characters;
+        if (mb_strlen($characters, 'UTF-8') > 1) {
+            $character = mb_substr($characters, 0, 1, 'UTF-8');
+        }
+
+        return self::unicodeToOrd($character);
+    }
+
+    /**
+     * CONCATENATE.
+     *
+     * @return string
+     */
+    public static function CONCATENATE(...$args)
+    {
+        $returnValue = '';
+
+        // Loop through arguments
+        $aArgs = Functions::flattenArray($args);
+        foreach ($aArgs as $arg) {
+            if (is_bool($arg)) {
+                if (Functions::getCompatibilityMode() == Functions::COMPATIBILITY_OPENOFFICE) {
+                    $arg = (int) $arg;
+                } else {
+                    $arg = ($arg) ? Calculation::getTRUE() : Calculation::getFALSE();
+                }
+            }
+            $returnValue .= $arg;
+        }
+
+        return $returnValue;
+    }
+
+    /**
+     * DOLLAR.
+     *
+     * This function converts a number to text using currency format, with the decimals rounded to the specified place.
+     * The format used is $#,##0.00_);($#,##0.00)..
+     *
+     * @param float $value The value to format
+     * @param int $decimals The number of digits to display to the right of the decimal point.
+     *                                    If decimals is negative, number is rounded to the left of the decimal point.
+     *                                    If you omit decimals, it is assumed to be 2
+     *
+     * @return string
+     */
+    public static function DOLLAR($value = 0, $decimals = 2)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $decimals = $decimals === null ? 0 : Functions::flattenSingleValue($decimals);
+
+        // Validate parameters
+        if (!is_numeric($value) || !is_numeric($decimals)) {
+            return Functions::NAN();
+        }
+        $decimals = floor($decimals);
+
+        $mask = '$#,##0';
+        if ($decimals > 0) {
+            $mask .= '.' . str_repeat('0', $decimals);
+        } else {
+            $round = pow(10, abs($decimals));
+            if ($value < 0) {
+                $round = 0 - $round;
+            }
+            $value = MathTrig::MROUND($value, $round);
+        }
+
+        return NumberFormat::toFormattedString($value, $mask);
+    }
+
+    /**
+     * SEARCHSENSITIVE.
+     *
+     * @param string $needle The string to look for
+     * @param string $haystack The string in which to look
+     * @param int $offset Offset within $haystack
+     *
+     * @return string
+     */
+    public static function SEARCHSENSITIVE($needle, $haystack, $offset = 1)
+    {
+        $needle = Functions::flattenSingleValue($needle);
+        $haystack = Functions::flattenSingleValue($haystack);
+        $offset = Functions::flattenSingleValue($offset);
+
+        if (!is_bool($needle)) {
+            if (is_bool($haystack)) {
+                $haystack = ($haystack) ? Calculation::getTRUE() : Calculation::getFALSE();
+            }
+
+            if (($offset > 0) && (StringHelper::countCharacters($haystack) > $offset)) {
+                if (StringHelper::countCharacters($needle) == 0) {
+                    return $offset;
+                }
+
+                $pos = mb_strpos($haystack, $needle, --$offset, 'UTF-8');
+                if ($pos !== false) {
+                    return ++$pos;
+                }
+            }
+        }
+
+        return Functions::VALUE();
+    }
+
+    /**
+     * SEARCHINSENSITIVE.
+     *
+     * @param string $needle The string to look for
+     * @param string $haystack The string in which to look
+     * @param int $offset Offset within $haystack
+     *
+     * @return string
+     */
+    public static function SEARCHINSENSITIVE($needle, $haystack, $offset = 1)
+    {
+        $needle = Functions::flattenSingleValue($needle);
+        $haystack = Functions::flattenSingleValue($haystack);
+        $offset = Functions::flattenSingleValue($offset);
+
+        if (!is_bool($needle)) {
+            if (is_bool($haystack)) {
+                $haystack = ($haystack) ? Calculation::getTRUE() : Calculation::getFALSE();
+            }
+
+            if (($offset > 0) && (StringHelper::countCharacters($haystack) > $offset)) {
+                if (StringHelper::countCharacters($needle) == 0) {
+                    return $offset;
+                }
+
+                $pos = mb_stripos($haystack, $needle, --$offset, 'UTF-8');
+                if ($pos !== false) {
+                    return ++$pos;
+                }
+            }
+        }
+
+        return Functions::VALUE();
+    }
+
+    /**
+     * FIXEDFORMAT.
+     *
+     * @param mixed $value Value to check
+     * @param int $decimals
+     * @param bool $no_commas
+     *
+     * @return string
+     */
+    public static function FIXEDFORMAT($value, $decimals = 2, $no_commas = false)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $decimals = Functions::flattenSingleValue($decimals);
+        $no_commas = Functions::flattenSingleValue($no_commas);
+
+        // Validate parameters
+        if (!is_numeric($value) || !is_numeric($decimals)) {
+            return Functions::NAN();
+        }
+        $decimals = floor($decimals);
+
+        $valueResult = round($value, $decimals);
+        if ($decimals < 0) {
+            $decimals = 0;
+        }
+        if (!$no_commas) {
+            $valueResult = number_format($valueResult, $decimals);
+        }
+
+        return (string) $valueResult;
+    }
+
+    /**
+     * LEFT.
+     *
+     * @param string $value Value
+     * @param int $chars Number of characters
+     *
+     * @return string
+     */
+    public static function LEFT($value = '', $chars = 1)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $chars = Functions::flattenSingleValue($chars);
+
+        if ($chars < 0) {
+            return Functions::VALUE();
+        }
+
+        if (is_bool($value)) {
+            $value = ($value) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        return mb_substr($value, 0, $chars, 'UTF-8');
+    }
+
+    /**
+     * MID.
+     *
+     * @param string $value Value
+     * @param int $start Start character
+     * @param int $chars Number of characters
+     *
+     * @return string
+     */
+    public static function MID($value = '', $start = 1, $chars = null)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $start = Functions::flattenSingleValue($start);
+        $chars = Functions::flattenSingleValue($chars);
+
+        if (($start < 1) || ($chars < 0)) {
+            return Functions::VALUE();
+        }
+
+        if (is_bool($value)) {
+            $value = ($value) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        if (empty($chars)) {
+            return '';
+        }
+
+        return mb_substr($value, --$start, $chars, 'UTF-8');
+    }
+
+    /**
+     * RIGHT.
+     *
+     * @param string $value Value
+     * @param int $chars Number of characters
+     *
+     * @return string
+     */
+    public static function RIGHT($value = '', $chars = 1)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $chars = Functions::flattenSingleValue($chars);
+
+        if ($chars < 0) {
+            return Functions::VALUE();
+        }
+
+        if (is_bool($value)) {
+            $value = ($value) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        return mb_substr($value, mb_strlen($value, 'UTF-8') - $chars, $chars, 'UTF-8');
+    }
+
+    /**
+     * STRINGLENGTH.
+     *
+     * @param string $value Value
+     *
+     * @return int
+     */
+    public static function STRINGLENGTH($value = '')
+    {
+        $value = Functions::flattenSingleValue($value);
+
+        if (is_bool($value)) {
+            $value = ($value) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        return mb_strlen($value, 'UTF-8');
+    }
+
+    /**
+     * LOWERCASE.
+     *
+     * Converts a string value to upper case.
+     *
+     * @param string $mixedCaseString
+     *
+     * @return string
+     */
+    public static function LOWERCASE($mixedCaseString)
+    {
+        $mixedCaseString = Functions::flattenSingleValue($mixedCaseString);
+
+        if (is_bool($mixedCaseString)) {
+            $mixedCaseString = ($mixedCaseString) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        return StringHelper::strToLower($mixedCaseString);
+    }
+
+    /**
+     * UPPERCASE.
+     *
+     * Converts a string value to upper case.
+     *
+     * @param string $mixedCaseString
+     *
+     * @return string
+     */
+    public static function UPPERCASE($mixedCaseString)
+    {
+        $mixedCaseString = Functions::flattenSingleValue($mixedCaseString);
+
+        if (is_bool($mixedCaseString)) {
+            $mixedCaseString = ($mixedCaseString) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        return StringHelper::strToUpper($mixedCaseString);
+    }
+
+    /**
+     * PROPERCASE.
+     *
+     * Converts a string value to upper case.
+     *
+     * @param string $mixedCaseString
+     *
+     * @return string
+     */
+    public static function PROPERCASE($mixedCaseString)
+    {
+        $mixedCaseString = Functions::flattenSingleValue($mixedCaseString);
+
+        if (is_bool($mixedCaseString)) {
+            $mixedCaseString = ($mixedCaseString) ? Calculation::getTRUE() : Calculation::getFALSE();
+        }
+
+        return StringHelper::strToTitle($mixedCaseString);
+    }
+
+    /**
+     * REPLACE.
+     *
+     * @param string $oldText String to modify
+     * @param int $start Start character
+     * @param int $chars Number of characters
+     * @param string $newText String to replace in defined position
+     *
+     * @return string
+     */
+    public static function REPLACE($oldText, $start, $chars, $newText)
+    {
+        $oldText = Functions::flattenSingleValue($oldText);
+        $start = Functions::flattenSingleValue($start);
+        $chars = Functions::flattenSingleValue($chars);
+        $newText = Functions::flattenSingleValue($newText);
+
+        $left = self::LEFT($oldText, $start - 1);
+        $right = self::RIGHT($oldText, self::STRINGLENGTH($oldText) - ($start + $chars) + 1);
+
+        return $left . $newText . $right;
+    }
+
+    /**
+     * SUBSTITUTE.
+     *
+     * @param string $text Value
+     * @param string $fromText From Value
+     * @param string $toText To Value
+     * @param int $instance Instance Number
+     *
+     * @return string
+     */
+    public static function SUBSTITUTE($text = '', $fromText = '', $toText = '', $instance = 0)
+    {
+        $text = Functions::flattenSingleValue($text);
+        $fromText = Functions::flattenSingleValue($fromText);
+        $toText = Functions::flattenSingleValue($toText);
+        $instance = floor(Functions::flattenSingleValue($instance));
+
+        if ($instance == 0) {
+            return str_replace($fromText, $toText, $text);
+        }
+
+        $pos = -1;
+        while ($instance > 0) {
+            $pos = mb_strpos($text, $fromText, $pos + 1, 'UTF-8');
+            if ($pos === false) {
+                break;
+            }
+            --$instance;
+        }
+
+        if ($pos !== false) {
+            return self::REPLACE($text, ++$pos, mb_strlen($fromText, 'UTF-8'), $toText);
+        }
+
+        return $text;
+    }
+
+    /**
+     * RETURNSTRING.
+     *
+     * @param mixed $testValue Value to check
+     *
+     * @return null|string
+     */
+    public static function RETURNSTRING($testValue = '')
+    {
+        $testValue = Functions::flattenSingleValue($testValue);
+
+        if (is_string($testValue)) {
+            return $testValue;
+        }
+
+        return null;
+    }
+
+    /**
+     * TEXTFORMAT.
+     *
+     * @param mixed $value Value to check
+     * @param string $format Format mask to use
+     *
+     * @return string
+     */
+    public static function TEXTFORMAT($value, $format)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $format = Functions::flattenSingleValue($format);
+
+        if ((is_string($value)) && (!is_numeric($value)) && Date::isDateTimeFormatCode($format)) {
+            $value = DateTime::DATEVALUE($value);
+        }
+
+        return (string) NumberFormat::toFormattedString($value, $format);
+    }
+
+    /**
+     * VALUE.
+     *
+     * @param mixed $value Value to check
+     *
+     * @return bool
+     */
+    public static function VALUE($value = '')
+    {
+        $value = Functions::flattenSingleValue($value);
+
+        if (!is_numeric($value)) {
+            $numberValue = str_replace(
+                StringHelper::getThousandsSeparator(),
+                '',
+                trim($value, " \t\n\r\0\x0B" . StringHelper::getCurrencyCode())
+            );
+            if (is_numeric($numberValue)) {
+                return (float) $numberValue;
+            }
+
+            $dateSetting = Functions::getReturnDateType();
+            Functions::setReturnDateType(Functions::RETURNDATE_EXCEL);
+
+            if (strpos($value, ':') !== false) {
+                $timeValue = DateTime::TIMEVALUE($value);
+                if ($timeValue !== Functions::VALUE()) {
+                    Functions::setReturnDateType($dateSetting);
+
+                    return $timeValue;
+                }
+            }
+            $dateValue = DateTime::DATEVALUE($value);
+            if ($dateValue !== Functions::VALUE()) {
+                Functions::setReturnDateType($dateSetting);
+
+                return $dateValue;
+            }
+            Functions::setReturnDateType($dateSetting);
+
+            return Functions::VALUE();
+        }
+
+        return (float) $value;
+    }
+
+    /**
+     * NUMBERVALUE.
+     *
+     * @param mixed $value Value to check
+     * @param string $decimalSeparator decimal separator, defaults to locale defined value
+     * @param string $groupSeparator group/thosands separator, defaults to locale defined value
+     *
+     * @return float|string
+     */
+    public static function NUMBERVALUE($value = '', $decimalSeparator = null, $groupSeparator = null)
+    {
+        $value = Functions::flattenSingleValue($value);
+        $decimalSeparator = Functions::flattenSingleValue($decimalSeparator);
+        $groupSeparator = Functions::flattenSingleValue($groupSeparator);
+
+        if (!is_numeric($value)) {
+            $decimalSeparator = empty($decimalSeparator) ? StringHelper::getDecimalSeparator() : $decimalSeparator;
+            $groupSeparator = empty($groupSeparator) ? StringHelper::getThousandsSeparator() : $groupSeparator;
+
+            $decimalPositions = preg_match_all('/' . preg_quote($decimalSeparator) . '/', $value, $matches, PREG_OFFSET_CAPTURE);
+            if ($decimalPositions > 1) {
+                return Functions::VALUE();
+            }
+            $decimalOffset = array_pop($matches[0])[1];
+            if (strpos($value, $groupSeparator, $decimalOffset) !== false) {
+                return Functions::VALUE();
+            }
+
+            $value = str_replace([$groupSeparator, $decimalSeparator], ['', '.'], $value);
+
+            // Handle the special case of trailing % signs
+            $percentageString = rtrim($value, '%');
+            if (!is_numeric($percentageString)) {
+                return Functions::VALUE();
+            }
+
+            $percentageAdjustment = strlen($value) - strlen($percentageString);
+            if ($percentageAdjustment) {
+                $value = (float) $percentageString;
+                $value /= pow(10, $percentageAdjustment * 2);
+            }
+        }
+
+        return (float) $value;
+    }
+
+    /**
+     * Compares two text strings and returns TRUE if they are exactly the same, FALSE otherwise.
+     * EXACT is case-sensitive but ignores formatting differences.
+     * Use EXACT to test text being entered into a document.
+     *
+     * @param $value1
+     * @param $value2
+     *
+     * @return bool
+     */
+    public static function EXACT($value1, $value2)
+    {
+        $value1 = Functions::flattenSingleValue($value1);
+        $value2 = Functions::flattenSingleValue($value2);
+
+        return (string) $value2 === (string) $value1;
+    }
+
+    /**
+     * TEXTJOIN.
+     *
+     * @param mixed $delimiter
+     * @param mixed $ignoreEmpty
+     * @param mixed $args
+     *
+     * @return string
+     */
+    public static function TEXTJOIN($delimiter, $ignoreEmpty, ...$args)
+    {
+        // Loop through arguments
+        $aArgs = Functions::flattenArray($args);
+        foreach ($aArgs as $key => &$arg) {
+            if ($ignoreEmpty && trim($arg) == '') {
+                unset($aArgs[$key]);
+            } elseif (is_bool($arg)) {
+                if (Functions::getCompatibilityMode() == Functions::COMPATIBILITY_OPENOFFICE) {
+                    $arg = (int) $arg;
+                } else {
+                    $arg = ($arg) ? Calculation::getTRUE() : Calculation::getFALSE();
+                }
+            }
+        }
+
+        return implode($delimiter, $aArgs);
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/Token/Stack.php

@@ -0,0 +1,149 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Token;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+
+class Stack
+{
+    /**
+     * The parser stack for formulae.
+     *
+     * @var mixed[]
+     */
+    private $stack = [];
+
+    /**
+     * Count of entries in the parser stack.
+     *
+     * @var int
+     */
+    private $count = 0;
+
+    /**
+     * Return the number of entries on the stack.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return $this->count;
+    }
+
+    /**
+     * Push a new entry onto the stack.
+     *
+     * @param mixed $type
+     * @param mixed $value
+     * @param mixed $reference
+     * @param null|string $storeKey will store the result under this alias
+     * @param null|string $onlyIf will only run computation if the matching
+     *      store key is true
+     * @param null|string $onlyIfNot will only run computation if the matching
+     *      store key is false
+     */
+    public function push(
+        $type,
+        $value,
+        $reference = null,
+        $storeKey = null,
+        $onlyIf = null,
+        $onlyIfNot = null
+    ) {
+        $stackItem = $this->getStackItem($type, $value, $reference, $storeKey, $onlyIf, $onlyIfNot);
+
+        $this->stack[$this->count++] = $stackItem;
+
+        if ($type == 'Function') {
+            $localeFunction = Calculation::localeFunc($value);
+            if ($localeFunction != $value) {
+                $this->stack[($this->count - 1)]['localeValue'] = $localeFunction;
+            }
+        }
+    }
+
+    public function getStackItem(
+        $type,
+        $value,
+        $reference = null,
+        $storeKey = null,
+        $onlyIf = null,
+        $onlyIfNot = null
+    ) {
+        $stackItem = [
+            'type' => $type,
+            'value' => $value,
+            'reference' => $reference,
+        ];
+
+        if (isset($storeKey)) {
+            $stackItem['storeKey'] = $storeKey;
+        }
+
+        if (isset($onlyIf)) {
+            $stackItem['onlyIf'] = $onlyIf;
+        }
+
+        if (isset($onlyIfNot)) {
+            $stackItem['onlyIfNot'] = $onlyIfNot;
+        }
+
+        return $stackItem;
+    }
+
+    /**
+     * Pop the last entry from the stack.
+     *
+     * @return mixed
+     */
+    public function pop()
+    {
+        if ($this->count > 0) {
+            return $this->stack[--$this->count];
+        }
+
+        return null;
+    }
+
+    /**
+     * Return an entry from the stack without removing it.
+     *
+     * @param int $n number indicating how far back in the stack we want to look
+     *
+     * @return mixed
+     */
+    public function last($n = 1)
+    {
+        if ($this->count - $n < 0) {
+            return null;
+        }
+
+        return $this->stack[$this->count - $n];
+    }
+
+    /**
+     * Clear the stack.
+     */
+    public function clear()
+    {
+        $this->stack = [];
+        $this->count = 0;
+    }
+
+    public function __toString()
+    {
+        $str = 'Stack: ';
+        foreach ($this->stack as $index => $item) {
+            if ($index > $this->count - 1) {
+                break;
+            }
+            $value = $item['value'] ?? 'no value';
+            while (is_array($value)) {
+                $value = array_pop($value);
+            }
+            $str .= $value . ' |> ';
+        }
+
+        return $str;
+    }
+}

PhpOffice/PhpSpreadsheet/Calculation/functionlist.txt

@@ -3,6 +3,8 @@ ACCRINT
 ACCRINTM
 ACOS
 ACOSH
+ACOT
+ACOTH
 ADDRESS
 AMORDEGRC
 AMORLINC
@@ -30,6 +32,11 @@ BIN2DEC
 BIN2HEX
 BIN2OCT
 BINOMDIST
+BITAND
+BITLSHIFT
+BITOR
+BITRSHIFT
+BITXOR
 CEILING
 CELL
 CHAR
@@ -43,12 +50,15 @@ COLUMN
 COLUMNS
 COMBIN
 COMPLEX
+CONCAT
 CONCATENATE
 CONFIDENCE
 CONVERT
 CORREL
 COS
 COSH
+COT
+COTH
 COUNT
 COUNTA
 COUNTBLANK
@@ -62,6 +72,8 @@ COUPNUM
 COUPPCD
 COVAR
 CRITBINOM
+CSC
+CSCH
 CUBEKPIMEMBER
 CUBEMEMBER
 CUBEMEMBERPROPERTY
@@ -76,6 +88,7 @@ DATEDIF
 DATEVALUE
 DAVERAGE
 DAY
+DAYS
 DAYS360
 DB
 DCOUNT
@@ -105,7 +118,9 @@ EDATE
 EFFECT
 EOMONTH
 ERF
+ERF.PRECISE
 ERFC
+ERFC.PRECISE
 ERROR.TYPE
 EVEN
 EXACT
@@ -149,6 +164,10 @@ IMAGINARY
 IMARGUMENT
 IMCONJUGATE
 IMCOS
+IMCOSH
+IMCOT
+IMCSC
+IMCSCH
 IMEXP
 IMLN
 IMLOG10
@@ -156,10 +175,14 @@ IMLOG2
 IMPOWER
 IMPRODUCT
 IMREAL
+IMSEC
+IMSECH
 IMSIN
+IMSINH
 IMSQRT
 IMSUB
 IMSUM
+IMTAN
 INDEX
 INDIRECT
 INFO
@@ -177,6 +200,7 @@ ISNA
 ISNONTEXT
 ISNUMBER
 ISODD
+ISOWEEKNUM
 ISPMT
 ISREF
 ISTEXT
@@ -200,6 +224,7 @@ LOWER
 MATCH
 MAX
 MAXA
+MAXIFS
 MDETERM
 MDURATION
 MEDIAN
@@ -207,6 +232,7 @@ MID
 MIDB
 MIN
 MINA
+MINIFS
 MINUTE
 MINVERSE
 MIRR
@@ -229,6 +255,7 @@ NOT
 NOW
 NPER
 NPV
+NUMBERVALUE
 OCT2BIN
 OCT2DEC
 OCT2HEX
@@ -239,6 +266,7 @@ ODDLPRICE
 ODDLYIELD
 OFFSET
 OR
+PDURATION
 PEARSON
 PERCENTILE
 PERCENTRANK
@@ -275,10 +303,13 @@ ROUNDDOWN
 ROUNDUP
 ROW
 ROWS
+RRI
 RSQ
 RTD
 SEARCH
 SEARCHB
+SEC
+SECH
 SECOND
 SERIESSUM
 SIGN
@@ -292,6 +323,8 @@ SQRT
 SQRTPI
 STANDARDIZE
 STDEV
+STDEV.A
+STDEV.P
 STDEVA
 STDEVP
 STDEVPA
@@ -306,6 +339,7 @@ SUMSQ
 SUMX2MY2
 SUMX2PY2
 SUMXMY2
+SWITCH
 SYD
 T
 TAN
@@ -315,6 +349,7 @@ TBILLPRICE
 TBILLYIELD
 TDIST
 TEXT
+TEXTJOIN
 TIME
 TIMEVALUE
 TINV
@@ -327,6 +362,8 @@ TRUE
 TRUNC
 TTEST
 TYPE
+UNICHAR
+UNIORD
 UPPER
 USDOLLAR
 VALUE
@@ -335,7 +372,6 @@ VARA
 VARP
 VARPA
 VDB
-VERSION
 VLOOKUP
 WEEKDAY
 WEEKNUM
@@ -343,6 +379,7 @@ WEIBULL
 WORKDAY
 XIRR
 XNPV
+XOR
 YEAR
 YEARFRAC
 YIELD

PhpOffice/PhpSpreadsheet/Calculation/locale/bg/config

@@ -0,0 +1,27 @@
+##
+## PhpSpreadsheet
+##
+##
+##
+
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= лв
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #ПРАЗНО!
+DIV0	= #ДЕЛ/0!
+VALUE	= #СТОЙНОСТ!
+REF	= #РЕФ!
+NAME	= #ИМЕ?
+NUM	= #ЧИСЛО!
+NA	= #Н/Д

PhpOffice/PhpSpreadsheet/Calculation/locale/bg/functions

@@ -1,27 +1,6 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
 ##
 ## Data in this file derived from information provided by web-junior (http://www.web-junior.net/)
 ##

PhpOffice/PhpSpreadsheet/Calculation/locale/cs/config

@@ -0,0 +1,23 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= Kč
+
+
+##
+##	Excel Error Codes	(For future use)
+##
+NULL	= #NULL!
+DIV0	= #DIV/0!
+VALUE	= #HODNOTA!
+REF	= #REF!
+NAME	= #NÁZEV?
+NUM	= #NUM!
+NA	= #N/A

PhpOffice/PhpSpreadsheet/Calculation/locale/cs/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/da/config

@@ -0,0 +1,25 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= kr
+
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NUL!
+DIV0	= #DIVISION/0!
+VALUE	= #VÆRDI!
+REF	= #REFERENCE!
+NAME	= #NAVN?
+NUM	= #NUM!
+NA	= #I/T

PhpOffice/PhpSpreadsheet/Calculation/locale/da/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/de/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= €
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NULL!
+DIV0	= #DIV/0!
+VALUE	= #WERT!
+REF	= #BEZUG!
+NAME	= #NAME?
+NUM	= #ZAHL!
+NA	= #NV

PhpOffice/PhpSpreadsheet/Calculation/locale/de/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/en/uk/config

@@ -0,0 +1,8 @@
+##
+## PhpSpreadsheet
+##
+
+##
+##	(For future use)
+##
+currencySymbol	= £

PhpOffice/PhpSpreadsheet/Calculation/locale/es/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= $	##	I'm surprised that the Excel Documentation suggests $ rather than €
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #¡NULO!
+DIV0	= #¡DIV/0!
+VALUE	= #¡VALOR!
+REF	= #¡REF!
+NAME	= #¿NOMBRE?
+NUM	= #¡NÚM!
+NA	= #N/A

PhpOffice/PhpSpreadsheet/Calculation/locale/es/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/fi/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= $	#	Symbol not known, should it be a € (Euro)?
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #TYHJÄ!
+DIV0	= #JAKO/0!
+VALUE	= #ARVO!
+REF	= #VIITTAUS!
+NAME	= #NIMI?
+NUM	= #LUKU!
+NA	= #PUUTTUU

PhpOffice/PhpSpreadsheet/Calculation/locale/fi/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/fr/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= €
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NUL!
+DIV0	= #DIV/0!
+VALUE	= #VALEUR!
+REF	= #REF!
+NAME	= #NOM?
+NUM	= #NOMBRE!
+NA	= #N/A

PhpOffice/PhpSpreadsheet/Calculation/locale/fr/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/hu/config

@@ -0,0 +1,23 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= Ft
+
+
+##
+##	Excel Error Codes	(For future use)
+##
+NULL	= #NULLA!
+DIV0	= #ZÉRÓOSZTÓ!
+VALUE	= #ÉRTÉK!
+REF	= #HIV!
+NAME	= #NÉV?
+NUM	= #SZÁM!
+NA	= #HIÁNYZIK

PhpOffice/PhpSpreadsheet/Calculation/locale/hu/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/it/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= €
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NULLO!
+DIV0	= #DIV/0!
+VALUE	= #VALORE!
+REF	= #RIF!
+NAME	= #NOME?
+NUM	= #NUM!
+NA	= #N/D

PhpOffice/PhpSpreadsheet/Calculation/locale/it/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/nl/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= €
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #LEEG!
+DIV0	= #DEEL/0!
+VALUE	= #WAARDE!
+REF	= #VERW!
+NAME	= #NAAM?
+NUM	= #GETAL!
+NA	= #N/B

PhpOffice/PhpSpreadsheet/Calculation/locale/nl/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/no/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= kr
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NULL!
+DIV0	= #DIV/0!
+VALUE	= #VERDI!
+REF	= #REF!
+NAME	= #NAVN?
+NUM	= #NUM!
+NA	= #I/T

PhpOffice/PhpSpreadsheet/Calculation/locale/no/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/pl/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= zł
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #ZERO!
+DIV0	= #DZIEL/0!
+VALUE	= #ARG!
+REF	= #ADR!
+NAME	= #NAZWA?
+NUM	= #LICZBA!
+NA	= #N/D!

PhpOffice/PhpSpreadsheet/Calculation/locale/pl/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Calculation/locale/pt/br/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= R$
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NULO!
+DIV0	= #DIV/0!
+VALUE	= #VALOR!
+REF	= #REF!
+NAME	= #NOME?
+NUM	= #NÚM!
+NA	= #N/D

PhpOffice/PhpSpreadsheet/Calculation/locale/pt/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= €
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #NULO!
+DIV0	= #DIV/0!
+VALUE	= #VALOR!
+REF	= #REF!
+NAME	= #NOME?
+NUM	= #NÚM!
+NA	= #N/D

PhpOffice/PhpSpreadsheet/Calculation/locale/ru/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= р
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #ПУСТО!
+DIV0	= #ДЕЛ/0!
+VALUE	= #ЗНАЧ!
+REF	= #ССЫЛ!
+NAME	= #ИМЯ?
+NUM	= #ЧИСЛО!
+NA	= #Н/Д

PhpOffice/PhpSpreadsheet/Calculation/locale/ru/functions

@@ -0,0 +1,416 @@
+##
+## PhpSpreadsheet
+##
+## Data in this file derived from information provided by web-junior (http://www.web-junior.net/)
+##
+##
+
+
+##
+##	Add-in and Automation functions				Функции надстроек и автоматизации
+##
+GETPIVOTDATA		= ПОЛУЧИТЬ.ДАННЫЕ.СВОДНОЙ.ТАБЛИЦЫ	##	Возвращает данные, хранящиеся в отчете сводной таблицы.
+
+
+##
+##	Cube functions						Функции Куб
+##
+CUBEKPIMEMBER		= КУБЭЛЕМЕНТКИП				##	Возвращает свойство ключевого индикатора производительности «(КИП)» и отображает имя «КИП» в ячейке. «КИП» представляет собой количественную величину, такую как ежемесячная валовая прибыль или ежеквартальная текучесть кадров, используемой для контроля эффективности работы организации.
+CUBEMEMBER		= КУБЭЛЕМЕНТ				##	Возвращает элемент или кортеж из куба. Используется для проверки существования элемента или кортежа в кубе.
+CUBEMEMBERPROPERTY	= КУБСВОЙСТВОЭЛЕМЕНТА			##	Возвращает значение свойства элемента из куба. Используется для проверки существования имени элемента в кубе и возвращает указанное свойство для этого элемента.
+CUBERANKEDMEMBER	= КУБПОРЭЛЕМЕНТ				##	Возвращает n-ый или ранжированный элемент в множество. Используется для возвращения одного или нескольких элементов в множество, например, лучшего продавца или 10 лучших студентов.
+CUBESET			= КУБМНОЖ				##	Определяет вычислительное множество элементов или кортежей, отправляя на сервер выражение, которое создает множество, а затем возвращает его в Microsoft Office Excel.
+CUBESETCOUNT		= КУБЧИСЛОЭЛМНОЖ			##	Возвращает число элементов множества.
+CUBEVALUE		= КУБЗНАЧЕНИЕ				##	Возвращает обобщенное значение из куба.
+
+
+##
+##	Database functions					Функции для работы с базами данных
+##
+DAVERAGE		= ДСРЗНАЧ				##	Возвращает среднее значение выбранных записей базы данных.
+DCOUNT			= БСЧЁТ					##	Подсчитывает количество числовых ячеек в базе данных.
+DCOUNTA			= БСЧЁТА				##	Подсчитывает количество непустых ячеек в базе данных.
+DGET			= БИЗВЛЕЧЬ				##	Извлекает из базы данных одну запись, удовлетворяющую заданному условию.
+DMAX			= ДМАКС					##	Возвращает максимальное значение среди выделенных записей базы данных.
+DMIN			= ДМИН					##	Возвращает минимальное значение среди выделенных записей базы данных.
+DPRODUCT		= БДПРОИЗВЕД				##	Перемножает значения определенного поля в записях базы данных, удовлетворяющих условию.
+DSTDEV			= ДСТАНДОТКЛ				##	Оценивает стандартное отклонение по выборке для выделенных записей базы данных.
+DSTDEVP			= ДСТАНДОТКЛП				##	Вычисляет стандартное отклонение по генеральной совокупности для выделенных записей базы данных
+DSUM			= БДСУММ				##	Суммирует числа в поле для записей базы данных, удовлетворяющих условию.
+DVAR			= БДДИСП				##	Оценивает дисперсию по выборке из выделенных записей базы данных
+DVARP			= БДДИСПП				##	Вычисляет дисперсию по генеральной совокупности для выделенных записей базы данных
+
+
+##
+##	Date and time functions					Функции даты и времени
+##
+DATE			= ДАТА					##	Возвращает заданную дату в числовом формате.
+DATEVALUE		= ДАТАЗНАЧ				##	Преобразует дату из текстового формата в числовой формат.
+DAY			= ДЕНЬ					##	Преобразует дату в числовом формате в день месяца.
+DAYS360			= ДНЕЙ360				##	Вычисляет количество дней между двумя датами на основе 360-дневного года.
+EDATE			= ДАТАМЕС				##	Возвращает дату в числовом формате, отстоящую на заданное число месяцев вперед или назад от начальной даты.
+EOMONTH			= КОНМЕСЯЦА				##	Возвращает дату в числовом формате для последнего дня месяца, отстоящего вперед или назад на заданное число месяцев.
+HOUR			= ЧАС					##	Преобразует дату в числовом формате в часы.
+MINUTE			= МИНУТЫ				##	Преобразует дату в числовом формате в минуты.
+MONTH			= МЕСЯЦ					##	Преобразует дату в числовом формате в месяцы.
+NETWORKDAYS		= ЧИСТРАБДНИ				##	Возвращает количество рабочих дней между двумя датами.
+NOW			= ТДАТА					##	Возвращает текущую дату и время в числовом формате.
+SECOND			= СЕКУНДЫ				##	Преобразует дату в числовом формате в секунды.
+TIME			= ВРЕМЯ					##	Возвращает заданное время в числовом формате.
+TIMEVALUE		= ВРЕМЗНАЧ				##	Преобразует время из текстового формата в числовой формат.
+TODAY			= СЕГОДНЯ				##	Возвращает текущую дату в числовом формате.
+WEEKDAY			= ДЕНЬНЕД				##	Преобразует дату в числовом формате в день недели.
+WEEKNUM			= НОМНЕДЕЛИ				##	Преобразует числовое представление в число, которое указывает, на какую неделю года приходится указанная дата.
+WORKDAY			= РАБДЕНЬ				##	Возвращает дату в числовом формате, отстоящую вперед или назад на заданное количество рабочих дней.
+YEAR			= ГОД					##	Преобразует дату в числовом формате в год.
+YEARFRAC		= ДОЛЯГОДА				##	Возвращает долю года, которую составляет количество дней между начальной и конечной датами.
+
+
+##
+##	Engineering functions					Инженерные функции
+##
+BESSELI			= БЕССЕЛЬ.I	 			##	Возвращает модифицированную функцию Бесселя In(x).
+BESSELJ			= БЕССЕЛЬ.J				##	Возвращает функцию Бесселя Jn(x).
+BESSELK			= БЕССЕЛЬ.K				##	Возвращает модифицированную функцию Бесселя Kn(x).
+BESSELY			= БЕССЕЛЬ.Y				##	Возвращает функцию Бесселя Yn(x).
+BIN2DEC			= ДВ.В.ДЕС				##	Преобразует двоичное число в десятичное.
+BIN2HEX			= ДВ.В.ШЕСТН				##	Преобразует двоичное число в шестнадцатеричное.
+BIN2OCT			= ДВ.В.ВОСЬМ				##	Преобразует двоичное число в восьмеричное.
+COMPLEX			= КОМПЛЕКСН				##	Преобразует коэффициенты при вещественной и мнимой частях комплексного числа в комплексное число.
+CONVERT			= ПРЕОБР				##	Преобразует число из одной системы единиц измерения в другую.
+DEC2BIN			= ДЕС.В.ДВ				##	Преобразует десятичное число в двоичное.
+DEC2HEX			= ДЕС.В.ШЕСТН				##	Преобразует десятичное число в шестнадцатеричное.
+DEC2OCT			= ДЕС.В.ВОСЬМ				##	Преобразует десятичное число в восьмеричное.
+DELTA			= ДЕЛЬТА				##	Проверяет равенство двух значений.
+ERF			= ФОШ					##	Возвращает функцию ошибки.
+ERFC			= ДФОШ					##	Возвращает дополнительную функцию ошибки.
+GESTEP			= ПОРОГ					##	Проверяет, не превышает ли данное число порогового значения.
+HEX2BIN			= ШЕСТН.В.ДВ				##	Преобразует шестнадцатеричное число в двоичное.
+HEX2DEC			= ШЕСТН.В.ДЕС				##	Преобразует шестнадцатеричное число в десятичное.
+HEX2OCT			= ШЕСТН.В.ВОСЬМ				##	Преобразует шестнадцатеричное число в восьмеричное.
+IMABS			= МНИМ.ABS				##	Возвращает абсолютную величину (модуль) комплексного числа.
+IMAGINARY		= МНИМ.ЧАСТЬ				##	Возвращает коэффициент при мнимой части комплексного числа.
+IMARGUMENT		= МНИМ.АРГУМЕНТ				##	Возвращает значение аргумента комплексного числа (тета) — угол, выраженный в радианах.
+IMCONJUGATE		= МНИМ.СОПРЯЖ				##	Возвращает комплексно-сопряженное комплексное число.
+IMCOS			= МНИМ.COS				##	Возвращает косинус комплексного числа.
+IMDIV			= МНИМ.ДЕЛ				##	Возвращает частное от деления двух комплексных чисел.
+IMEXP			= МНИМ.EXP				##	Возвращает экспоненту комплексного числа.
+IMLN			= МНИМ.LN				##	Возвращает натуральный логарифм комплексного числа.
+IMLOG10			= МНИМ.LOG10				##	Возвращает обычный (десятичный) логарифм комплексного числа.
+IMLOG2			= МНИМ.LOG2				##	Возвращает двоичный логарифм комплексного числа.
+IMPOWER			= МНИМ.СТЕПЕНЬ				##	Возвращает комплексное число, возведенное в целую степень.
+IMPRODUCT		= МНИМ.ПРОИЗВЕД				##	Возвращает произведение от 2 до 29 комплексных чисел.
+IMREAL			= МНИМ.ВЕЩ				##	Возвращает коэффициент при вещественной части комплексного числа.
+IMSIN			= МНИМ.SIN				##	Возвращает синус комплексного числа.
+IMSQRT			= МНИМ.КОРЕНЬ				##	Возвращает значение квадратного корня из комплексного числа.
+IMSUB			= МНИМ.РАЗН				##	Возвращает разность двух комплексных чисел.
+IMSUM			= МНИМ.СУММ				##	Возвращает сумму комплексных чисел.
+OCT2BIN			= ВОСЬМ.В.ДВ				##	Преобразует восьмеричное число в двоичное.
+OCT2DEC			= ВОСЬМ.В.ДЕС				##	Преобразует восьмеричное число в десятичное.
+OCT2HEX			= ВОСЬМ.В.ШЕСТН				##	Преобразует восьмеричное число в шестнадцатеричное.
+
+
+##
+##	Financial functions					Финансовые функции
+##
+ACCRINT			= НАКОПДОХОД				##	Возвращает накопленный процент по ценным бумагам с периодической выплатой процентов.
+ACCRINTM		= НАКОПДОХОДПОГАШ			##	Возвращает накопленный процент по ценным бумагам, проценты по которым выплачиваются в срок погашения.
+AMORDEGRC		= АМОРУМ				##	Возвращает величину амортизации для каждого периода, используя коэффициент амортизации.
+AMORLINC		= АМОРУВ				##	Возвращает величину амортизации для каждого периода.
+COUPDAYBS		= ДНЕЙКУПОНДО				##	Возвращает количество дней от начала действия купона до даты соглашения.
+COUPDAYS		= ДНЕЙКУПОН				##	Возвращает число дней в периоде купона, содержащем дату соглашения.
+COUPDAYSNC		= ДНЕЙКУПОНПОСЛЕ			##	Возвращает число дней от даты соглашения до срока следующего купона.
+COUPNCD			= ДАТАКУПОНПОСЛЕ			##	Возвращает следующую дату купона после даты соглашения.
+COUPNUM			= ЧИСЛКУПОН				##	Возвращает количество купонов, которые могут быть оплачены между датой соглашения и сроком вступления в силу.
+COUPPCD			= ДАТАКУПОНДО				##	Возвращает предыдущую дату купона перед датой соглашения.
+CUMIPMT			= ОБЩПЛАТ				##	Возвращает общую выплату, произведенную между двумя периодическими выплатами.
+CUMPRINC		= ОБЩДОХОД				##	Возвращает общую выплату по займу между двумя периодами.
+DB			= ФУО					##	Возвращает величину амортизации актива для заданного периода, рассчитанную методом фиксированного уменьшения остатка.
+DDB			= ДДОБ					##	Возвращает величину амортизации актива за данный период, используя метод двойного уменьшения остатка или иной явно указанный метод.
+DISC			= СКИДКА				##	Возвращает норму скидки для ценных бумаг.
+DOLLARDE		= РУБЛЬ.ДЕС				##	Преобразует цену в рублях, выраженную в виде дроби, в цену в рублях, выраженную десятичным числом.
+DOLLARFR		= РУБЛЬ.ДРОБЬ				##	Преобразует цену в рублях, выраженную десятичным числом, в цену в рублях, выраженную в виде дроби.
+DURATION		= ДЛИТ					##	Возвращает ежегодную продолжительность действия ценных бумаг с периодическими выплатами по процентам.
+EFFECT			= ЭФФЕКТ				##	Возвращает действующие ежегодные процентные ставки.
+FV			= БС					##	Возвращает будущую стоимость инвестиции.
+FVSCHEDULE		= БЗРАСПИС				##	Возвращает будущую стоимость первоначальной основной суммы после начисления ряда сложных процентов.
+INTRATE			= ИНОРМА				##	Возвращает процентную ставку для полностью инвестированных ценных бумаг.
+IPMT			= ПРПЛТ					##	Возвращает величину выплаты прибыли на вложения за данный период.
+IRR			= ВСД					##	Возвращает внутреннюю ставку доходности для ряда потоков денежных средств.
+ISPMT			= ПРОЦПЛАТ				##	Вычисляет выплаты за указанный период инвестиции.
+MDURATION		= МДЛИТ					##	Возвращает модифицированную длительность Маколея для ценных бумаг с предполагаемой номинальной стоимостью 100 рублей.
+MIRR			= МВСД					##	Возвращает внутреннюю ставку доходности, при которой положительные и отрицательные денежные потоки имеют разные значения ставки.
+NOMINAL			= НОМИНАЛ				##	Возвращает номинальную годовую процентную ставку.
+NPER			= КПЕР					##	Возвращает общее количество периодов выплаты для данного вклада.
+NPV			= ЧПС					##	Возвращает чистую приведенную стоимость инвестиции, основанной на серии периодических денежных потоков и ставке дисконтирования.
+ODDFPRICE		= ЦЕНАПЕРВНЕРЕГ				##	Возвращает цену за 100 рублей нарицательной стоимости ценных бумаг с нерегулярным первым периодом.
+ODDFYIELD		= ДОХОДПЕРВНЕРЕГ			##	Возвращает доход по ценным бумагам с нерегулярным первым периодом.
+ODDLPRICE		= ЦЕНАПОСЛНЕРЕГ				##	Возвращает цену за 100 рублей нарицательной стоимости ценных бумаг с нерегулярным последним периодом.
+ODDLYIELD		= ДОХОДПОСЛНЕРЕГ			##	Возвращает доход по ценным бумагам с нерегулярным последним периодом.
+PMT			= ПЛТ					##	Возвращает величину выплаты за один период аннуитета.
+PPMT			= ОСПЛТ					##	Возвращает величину выплат в погашение основной суммы по инвестиции за заданный период.
+PRICE			= ЦЕНА					##	Возвращает цену за 100 рублей нарицательной стоимости ценных бумаг, по которым производится периодическая выплата процентов.
+PRICEDISC		= ЦЕНАСКИДКА				##	Возвращает цену за 100 рублей номинальной стоимости ценных бумаг, на которые сделана скидка.
+PRICEMAT		= ЦЕНАПОГАШ				##	Возвращает цену за 100 рублей номинальной стоимости ценных бумаг, проценты по которым выплачиваются в срок погашения.
+PV			= ПС					##	Возвращает приведенную (к текущему моменту) стоимость инвестиции.
+RATE			= СТАВКА				##	Возвращает процентную ставку по аннуитету за один период.
+RECEIVED		= ПОЛУЧЕНО				##	Возвращает сумму, полученную к сроку погашения полностью обеспеченных ценных бумаг.
+SLN			= АПЛ					##	Возвращает величину линейной амортизации актива за один период.
+SYD			= АСЧ					##	Возвращает величину амортизации актива за данный период, рассчитанную методом суммы годовых чисел.
+TBILLEQ			= РАВНОКЧЕК				##	Возвращает эквивалентный облигации доход по казначейскому чеку.
+TBILLPRICE		= ЦЕНАКЧЕК				##	Возвращает цену за 100 рублей нарицательной стоимости для казначейского чека.
+TBILLYIELD		= ДОХОДКЧЕК				##	Возвращает доход по казначейскому чеку.
+VDB			= ПУО					##	Возвращает величину амортизации актива для указанного или частичного периода при использовании метода сокращающегося баланса.
+XIRR			= ЧИСТВНДОХ				##	Возвращает внутреннюю ставку доходности для графика денежных потоков, которые не обязательно носят периодический характер.
+XNPV			= ЧИСТНЗ				##	Возвращает чистую приведенную стоимость для денежных потоков, которые не обязательно являются периодическими.
+YIELD			= ДОХОД					##	Возвращает доход от ценных бумаг, по которым производятся периодические выплаты процентов.
+YIELDDISC		= ДОХОДСКИДКА				##	Возвращает годовой доход по ценным бумагам, на которые сделана скидка (пример — казначейские чеки).
+YIELDMAT		= ДОХОДПОГАШ				##	Возвращает годовой доход от ценных бумаг, проценты по которым выплачиваются в срок погашения.
+
+
+##
+##	Information functions					Информационные функции
+##
+CELL			= ЯЧЕЙКА				##	Возвращает информацию о формате, расположении или содержимом ячейки.
+ERROR.TYPE		= ТИП.ОШИБКИ				##	Возвращает числовой код, соответствующий типу ошибки.
+INFO			= ИНФОРМ				##	Возвращает информацию о текущей операционной среде.
+ISBLANK			= ЕПУСТО				##	Возвращает значение ИСТИНА, если аргумент является ссылкой на пустую ячейку.
+ISERR			= ЕОШ					##	Возвращает значение ИСТИНА, если аргумент ссылается на любое значение ошибки, кроме #Н/Д.
+ISERROR			= ЕОШИБКА				##	Возвращает значение ИСТИНА, если аргумент ссылается на любое значение ошибки.
+ISEVEN			= ЕЧЁТН					##	Возвращает значение ИСТИНА, если значение аргумента является четным числом.
+ISLOGICAL		= ЕЛОГИЧ				##	Возвращает значение ИСТИНА, если аргумент ссылается на логическое значение.
+ISNA			= ЕНД					##	Возвращает значение ИСТИНА, если аргумент ссылается на значение ошибки #Н/Д.
+ISNONTEXT		= ЕНЕТЕКСТ				##	Возвращает значение ИСТИНА, если значение аргумента не является текстом.
+ISNUMBER		= ЕЧИСЛО				##	Возвращает значение ИСТИНА, если аргумент ссылается на число.
+ISODD			= ЕНЕЧЁТ				##	Возвращает значение ИСТИНА, если значение аргумента является нечетным числом.
+ISREF			= ЕССЫЛКА				##	Возвращает значение ИСТИНА, если значение аргумента является ссылкой.
+ISTEXT			= ЕТЕКСТ				##	Возвращает значение ИСТИНА, если значение аргумента является текстом.
+N			= Ч					##	Возвращает значение, преобразованное в число.
+NA			= НД					##	Возвращает значение ошибки #Н/Д.
+TYPE			= ТИП					##	Возвращает число, обозначающее тип данных значения.
+
+
+##
+##	Logical functions					Логические функции
+##
+AND			= И					##	Renvoie VRAI si tous ses arguments sont VRAI.
+FALSE			= ЛОЖЬ					##	Возвращает логическое значение ЛОЖЬ.
+IF			= ЕСЛИ					##	Выполняет проверку условия.
+IFERROR			= ЕСЛИОШИБКА				##	Возвращает введённое значение, если вычисление по формуле вызывает ошибку; в противном случае функция возвращает результат вычисления.
+NOT			= НЕ					##	Меняет логическое значение своего аргумента на противоположное.
+OR			= ИЛИ					##	Возвращает значение ИСТИНА, если хотя бы один аргумент имеет значение ИСТИНА.
+TRUE			= ИСТИНА				##	Возвращает логическое значение ИСТИНА.
+
+
+##
+##	Lookup and reference functions				Функции ссылки и поиска
+##
+ADDRESS			= АДРЕС					##	Возвращает ссылку на отдельную ячейку листа в виде текста.
+AREAS			= ОБЛАСТИ				##	Возвращает количество областей в ссылке.
+CHOOSE			= ВЫБОР					##	Выбирает значение из списка значений по индексу.
+COLUMN			= СТОЛБЕЦ				##	Возвращает номер столбца, на который указывает ссылка.
+COLUMNS			= ЧИСЛСТОЛБ				##	Возвращает количество столбцов в ссылке.
+HLOOKUP			= ГПР					##	Ищет в первой строке массива и возвращает значение отмеченной ячейки
+HYPERLINK		= ГИПЕРССЫЛКА				##	Создает ссылку, открывающую документ, который находится на сервере сети, в интрасети или в Интернете.
+INDEX			= ИНДЕКС				##	Использует индекс для выбора значения из ссылки или массива.
+INDIRECT		= ДВССЫЛ				##	Возвращает ссылку, заданную текстовым значением.
+LOOKUP			= ПРОСМОТР				##	Ищет значения в векторе или массиве.
+MATCH			= ПОИСКПОЗ				##	Ищет значения в ссылке или массиве.
+OFFSET			= СМЕЩ					##	Возвращает смещение ссылки относительно заданной ссылки.
+ROW			= СТРОКА				##	Возвращает номер строки, определяемой ссылкой.
+ROWS			= ЧСТРОК				##	Возвращает количество строк в ссылке.
+RTD			= ДРВ					##	Извлекает данные реального времени из программ, поддерживающих автоматизацию COM (Программирование объектов. Стандартное средство для работы с объектами некоторого приложения из другого приложения или средства разработки. Программирование объектов (ранее называемое программированием OLE) является функцией модели COM (Component Object Model, модель компонентных объектов).).
+TRANSPOSE		= ТРАНСП				##	Возвращает транспонированный массив.
+VLOOKUP			= ВПР					##	Ищет значение в первом столбце массива и возвращает значение из ячейки в найденной строке и указанном столбце.
+
+
+##
+##	Math and trigonometry functions				Математические и тригонометрические функции
+##
+ABS			= ABS					##	Возвращает модуль (абсолютную величину) числа.
+ACOS			= ACOS					##	Возвращает арккосинус числа.
+ACOSH			= ACOSH					##	Возвращает гиперболический арккосинус числа.
+ASIN			= ASIN					##	Возвращает арксинус числа.
+ASINH			= ASINH					##	Возвращает гиперболический арксинус числа.
+ATAN			= ATAN					##	Возвращает арктангенс числа.
+ATAN2			= ATAN2					##	Возвращает арктангенс для заданных координат x и y.
+ATANH			= ATANH					##	Возвращает гиперболический арктангенс числа.
+CEILING			= ОКРВВЕРХ				##	Округляет число до ближайшего целого или до ближайшего кратного указанному значению.
+COMBIN			= ЧИСЛКОМБ				##	Возвращает количество комбинаций для заданного числа объектов.
+COS			= COS					##	Возвращает косинус числа.
+COSH			= COSH					##	Возвращает гиперболический косинус числа.
+DEGREES			= ГРАДУСЫ				##	Преобразует радианы в градусы.
+EVEN			= ЧЁТН					##	Округляет число до ближайшего четного целого.
+EXP			= EXP					##	Возвращает число e, возведенное в указанную степень.
+FACT			= ФАКТР					##	Возвращает факториал числа.
+FACTDOUBLE		= ДВФАКТР				##	Возвращает двойной факториал числа.
+FLOOR			= ОКРВНИЗ				##	Округляет число до ближайшего меньшего по модулю значения.
+GCD			= НОД					##	Возвращает наибольший общий делитель.
+INT			= ЦЕЛОЕ					##	Округляет число до ближайшего меньшего целого.
+LCM			= НОК					##	Возвращает наименьшее общее кратное.
+LN			= LN					##	Возвращает натуральный логарифм числа.
+LOG			= LOG					##	Возвращает логарифм числа по заданному основанию.
+LOG10			= LOG10					##	Возвращает десятичный логарифм числа.
+MDETERM			= МОПРЕД				##	Возвращает определитель матрицы массива.
+MINVERSE		= МОБР					##	Возвращает обратную матрицу массива.
+MMULT			= МУМНОЖ				##	Возвращает произведение матриц двух массивов.
+MOD			= ОСТАТ					##	Возвращает остаток от деления.
+MROUND			= ОКРУГЛТ				##	Возвращает число, округленное с требуемой точностью.
+MULTINOMIAL		= МУЛЬТИНОМ				##	Возвращает мультиномиальный коэффициент множества чисел.
+ODD			= НЕЧЁТ					##	Округляет число до ближайшего нечетного целого.
+PI			= ПИ					##	Возвращает число пи.
+POWER			= СТЕПЕНЬ				##	Возвращает результат возведения числа в степень.
+PRODUCT			= ПРОИЗВЕД				##	Возвращает произведение аргументов.
+QUOTIENT		= ЧАСТНОЕ				##	Возвращает целую часть частного при делении.
+RADIANS			= РАДИАНЫ				##	Преобразует градусы в радианы.
+RAND			= СЛЧИС					##	Возвращает случайное число в интервале от 0 до 1.
+RANDBETWEEN		= СЛУЧМЕЖДУ				##	Возвращает случайное число в интервале между двумя заданными числами.
+ROMAN			= РИМСКОЕ				##	Преобразует арабские цифры в римские в виде текста.
+ROUND			= ОКРУГЛ				##	Округляет число до указанного количества десятичных разрядов.
+ROUNDDOWN		= ОКРУГЛВНИЗ				##	Округляет число до ближайшего меньшего по модулю значения.
+ROUNDUP			= ОКРУГЛВВЕРХ				##	Округляет число до ближайшего большего по модулю значения.
+SERIESSUM		= РЯД.СУММ				##	Возвращает сумму степенного ряда, вычисленную по формуле.
+SIGN			= ЗНАК					##	Возвращает знак числа.
+SIN			= SIN					##	Возвращает синус заданного угла.
+SINH			= SINH					##	Возвращает гиперболический синус числа.
+SQRT			= КОРЕНЬ				##	Возвращает положительное значение квадратного корня.
+SQRTPI			= КОРЕНЬПИ				##	Возвращает квадратный корень из значения выражения (число * ПИ).
+SUBTOTAL		= ПРОМЕЖУТОЧНЫЕ.ИТОГИ			##	Возвращает промежуточный итог в списке или базе данных.
+SUM			= СУММ					##	Суммирует аргументы.
+SUMIF			= СУММЕСЛИ				##	Суммирует ячейки, удовлетворяющие заданному условию.
+SUMIFS			= СУММЕСЛИМН				##	Суммирует диапазон ячеек, удовлетворяющих нескольким условиям.
+SUMPRODUCT		= СУММПРОИЗВ				##	Возвращает сумму произведений соответствующих элементов массивов.
+SUMSQ			= СУММКВ				##	Возвращает сумму квадратов аргументов.
+SUMX2MY2		= СУММРАЗНКВ				##	Возвращает сумму разностей квадратов соответствующих значений в двух массивах.
+SUMX2PY2		= СУММСУММКВ				##	Возвращает сумму сумм квадратов соответствующих элементов двух массивов.
+SUMXMY2			= СУММКВРАЗН				##	Возвращает сумму квадратов разностей соответствующих значений в двух массивах.
+TAN			= TAN					##	Возвращает тангенс числа.
+TANH			= TANH					##	Возвращает гиперболический тангенс числа.
+TRUNC			= ОТБР					##	Отбрасывает дробную часть числа.
+
+
+##
+##	Statistical functions					Статистические функции
+##
+AVEDEV			= СРОТКЛ				##	Возвращает среднее арифметическое абсолютных значений отклонений точек данных от среднего.
+AVERAGE			= СРЗНАЧ				##	Возвращает среднее арифметическое аргументов.
+AVERAGEA		= СРЗНАЧА				##	Возвращает среднее арифметическое аргументов, включая числа, текст и логические значения.
+AVERAGEIF		= СРЗНАЧЕСЛИ 				##	Возвращает среднее значение (среднее арифметическое) всех ячеек в диапазоне, которые удовлетворяют данному условию.
+AVERAGEIFS		= СРЗНАЧЕСЛИМН 				##	Возвращает среднее значение (среднее арифметическое) всех ячеек, которые удовлетворяют нескольким условиям.
+BETADIST		= БЕТАРАСП				##	Возвращает интегральную функцию бета-распределения.
+BETAINV			= БЕТАОБР				##	Возвращает обратную интегральную функцию указанного бета-распределения.
+BINOMDIST		= БИНОМРАСП				##	Возвращает отдельное значение биномиального распределения.
+CHIDIST			= ХИ2РАСП				##	Возвращает одностороннюю вероятность распределения хи-квадрат.
+CHIINV			= ХИ2ОБР				##	Возвращает обратное значение односторонней вероятности распределения хи-квадрат.
+CHITEST			= ХИ2ТЕСТ				##	Возвращает тест на независимость.
+CONFIDENCE		= ДОВЕРИТ				##	Возвращает доверительный интервал для среднего значения по генеральной совокупности.
+CORREL			= КОРРЕЛ				##	Возвращает коэффициент корреляции между двумя множествами данных.
+COUNT			= СЧЁТ					##	Подсчитывает количество чисел в списке аргументов.
+COUNTA			= СЧЁТЗ					##	Подсчитывает количество значений в списке аргументов.
+COUNTBLANK		= СЧИТАТЬПУСТОТЫ			##	Подсчитывает количество пустых ячеек в диапазоне
+COUNTIF			= СЧЁТЕСЛИ 				##	Подсчитывает количество ячеек в диапазоне, удовлетворяющих заданному условию
+COUNTIFS		= СЧЁТЕСЛИМН				##	Подсчитывает количество ячеек внутри диапазона, удовлетворяющих нескольким условиям.
+COVAR			= КОВАР					##	Возвращает ковариацию, среднее произведений парных отклонений
+CRITBINOM		= КРИТБИНОМ				##	Возвращает наименьшее значение, для которого интегральное биномиальное распределение меньше или равно заданному критерию.
+DEVSQ			= КВАДРОТКЛ				##	Возвращает сумму квадратов отклонений.
+EXPONDIST		= ЭКСПРАСП				##	Возвращает экспоненциальное распределение.
+FDIST			= FРАСП					##	Возвращает F-распределение вероятности.
+FINV			= FРАСПОБР				##	Возвращает обратное значение для F-распределения вероятности.
+FISHER			= ФИШЕР					##	Возвращает преобразование Фишера.
+FISHERINV		= ФИШЕРОБР				##	Возвращает обратное преобразование Фишера.
+FORECAST		= ПРЕДСКАЗ				##	Возвращает значение линейного тренда.
+FREQUENCY		= ЧАСТОТА				##	Возвращает распределение частот в виде вертикального массива.
+FTEST			= ФТЕСТ					##	Возвращает результат F-теста.
+GAMMADIST		= ГАММАРАСП				##	Возвращает гамма-распределение.
+GAMMAINV		= ГАММАОБР				##	Возвращает обратное гамма-распределение.
+GAMMALN			= ГАММАНЛОГ				##	Возвращает натуральный логарифм гамма функции, Γ(x).
+GEOMEAN			= СРГЕОМ				##	Возвращает среднее геометрическое.
+GROWTH			= РОСТ					##	Возвращает значения в соответствии с экспоненциальным трендом.
+HARMEAN			= СРГАРМ				##	Возвращает среднее гармоническое.
+HYPGEOMDIST		= ГИПЕРГЕОМЕТ				##	Возвращает гипергеометрическое распределение.
+INTERCEPT		= ОТРЕЗОК				##	Возвращает отрезок, отсекаемый на оси линией линейной регрессии.
+KURT			= ЭКСЦЕСС				##	Возвращает эксцесс множества данных.
+LARGE			= НАИБОЛЬШИЙ				##	Возвращает k-ое наибольшее значение в множестве данных.
+LINEST			= ЛИНЕЙН				##	Возвращает параметры линейного тренда.
+LOGEST			= ЛГРФПРИБЛ				##	Возвращает параметры экспоненциального тренда.
+LOGINV			= ЛОГНОРМОБР				##	Возвращает обратное логарифмическое нормальное распределение.
+LOGNORMDIST		= ЛОГНОРМРАСП				##	Возвращает интегральное логарифмическое нормальное распределение.
+MAX			= МАКС					##	Возвращает наибольшее значение в списке аргументов.
+MAXA			= МАКСА					##	Возвращает наибольшее значение в списке аргументов, включая числа, текст и логические значения.
+MEDIAN			= МЕДИАНА				##	Возвращает медиану заданных чисел.
+MIN			= МИН					##	Возвращает наименьшее значение в списке аргументов.
+MINA			= МИНА					##	Возвращает наименьшее значение в списке аргументов, включая числа, текст и логические значения.
+MODE			= МОДА					##	Возвращает значение моды множества данных.
+NEGBINOMDIST		= ОТРБИНОМРАСП				##	Возвращает отрицательное биномиальное распределение.
+NORMDIST		= НОРМРАСП				##	Возвращает нормальную функцию распределения.
+NORMINV			= НОРМОБР				##	Возвращает обратное нормальное распределение.
+NORMSDIST		= НОРМСТРАСП				##	Возвращает стандартное нормальное интегральное распределение.
+NORMSINV		= НОРМСТОБР				##	Возвращает обратное значение стандартного нормального распределения.
+PEARSON			= ПИРСОН				##	Возвращает коэффициент корреляции Пирсона.
+PERCENTILE		= ПЕРСЕНТИЛЬ				##	Возвращает k-ую персентиль для значений диапазона.
+PERCENTRANK		= ПРОЦЕНТРАНГ				##	Возвращает процентную норму значения в множестве данных.
+PERMUT			= ПЕРЕСТ				##	Возвращает количество перестановок для заданного числа объектов.
+POISSON			= ПУАССОН				##	Возвращает распределение Пуассона.
+PROB			= ВЕРОЯТНОСТЬ				##	Возвращает вероятность того, что значение из диапазона находится внутри заданных пределов.
+QUARTILE		= КВАРТИЛЬ				##	Возвращает квартиль множества данных.
+RANK			= РАНГ					##	Возвращает ранг числа в списке чисел.
+RSQ			= КВПИРСОН				##	Возвращает квадрат коэффициента корреляции Пирсона.
+SKEW			= СКОС					##	Возвращает асимметрию распределения.
+SLOPE			= НАКЛОН				##	Возвращает наклон линии линейной регрессии.
+SMALL			= НАИМЕНЬШИЙ				##	Возвращает k-ое наименьшее значение в множестве данных.
+STANDARDIZE		= НОРМАЛИЗАЦИЯ				##	Возвращает нормализованное значение.
+STDEV			= СТАНДОТКЛОН				##	Оценивает стандартное отклонение по выборке.
+STDEVA			= СТАНДОТКЛОНА				##	Оценивает стандартное отклонение по выборке, включая числа, текст и логические значения.
+STDEVP			= СТАНДОТКЛОНП				##	Вычисляет стандартное отклонение по генеральной совокупности.
+STDEVPA			= СТАНДОТКЛОНПА				##	Вычисляет стандартное отклонение по генеральной совокупности, включая числа, текст и логические значения.
+STEYX			= СТОШYX				##	Возвращает стандартную ошибку предсказанных значений y для каждого значения x в регрессии.
+TDIST			= СТЬЮДРАСП				##	Возвращает t-распределение Стьюдента.
+TINV			= СТЬЮДРАСПОБР				##	Возвращает обратное t-распределение Стьюдента.
+TREND			= ТЕНДЕНЦИЯ				##	Возвращает значения в соответствии с линейным трендом.
+TRIMMEAN		= УРЕЗСРЕДНЕЕ				##	Возвращает среднее внутренности множества данных.
+TTEST			= ТТЕСТ					##	Возвращает вероятность, соответствующую критерию Стьюдента.
+VAR			= ДИСП					##	Оценивает дисперсию по выборке.
+VARA			= ДИСПА					##	Оценивает дисперсию по выборке, включая числа, текст и логические значения.
+VARP			= ДИСПР					##	Вычисляет дисперсию для генеральной совокупности.
+VARPA			= ДИСПРА				##	Вычисляет дисперсию для генеральной совокупности, включая числа, текст и логические значения.
+WEIBULL			= ВЕЙБУЛЛ				##	Возвращает распределение Вейбулла.
+ZTEST			= ZТЕСТ					##	Возвращает двустороннее P-значение z-теста.
+
+
+##
+##	Text functions						Текстовые функции
+##
+ASC			= ASC					##	Для языков с двухбайтовыми наборами знаков (например, катакана) преобразует полноширинные (двухбайтовые) знаки в полуширинные (однобайтовые).
+BAHTTEXT		= БАТТЕКСТ				##	Преобразует число в текст, используя денежный формат ß (БАТ).
+CHAR			= СИМВОЛ				##	Возвращает знак с заданным кодом.
+CLEAN			= ПЕЧСИМВ				##	Удаляет все непечатаемые знаки из текста.
+CODE			= КОДСИМВ				##	Возвращает числовой код первого знака в текстовой строке.
+CONCATENATE		= СЦЕПИТЬ				##	Объединяет несколько текстовых элементов в один.
+DOLLAR			= РУБЛЬ					##	Преобразует число в текст, используя денежный формат.
+EXACT			= СОВПАД				##	Проверяет идентичность двух текстовых значений.
+FIND			= НАЙТИ					##	Ищет вхождения одного текстового значения в другом (с учетом регистра).
+FINDB			= НАЙТИБ				##	Ищет вхождения одного текстового значения в другом (с учетом регистра).
+FIXED			= ФИКСИРОВАННЫЙ				##	Форматирует число и преобразует его в текст с заданным числом десятичных знаков.
+JIS			= JIS					##	Для языков с двухбайтовыми наборами знаков (например, катакана) преобразует полуширинные (однобайтовые) знаки в текстовой строке в полноширинные (двухбайтовые).
+LEFT			= ЛЕВСИМВ				##	Возвращает крайние слева знаки текстового значения.
+LEFTB			= ЛЕВБ					##	Возвращает крайние слева знаки текстового значения.
+LEN			= ДЛСТР					##	Возвращает количество знаков в текстовой строке.
+LENB			= ДЛИНБ					##	Возвращает количество знаков в текстовой строке.
+LOWER			= СТРОЧН				##	Преобразует все буквы текста в строчные.
+MID			= ПСТР					##	Возвращает заданное число знаков из строки текста, начиная с указанной позиции.
+MIDB			= ПСТРБ					##	Возвращает заданное число знаков из строки текста, начиная с указанной позиции.
+PHONETIC		= PHONETIC				##	Извлекает фонетические (фуригана) знаки из текстовой строки.
+PROPER			= ПРОПНАЧ				##	Преобразует первую букву в каждом слове текста в прописную.
+REPLACE			= ЗАМЕНИТЬ				##	Заменяет знаки в тексте.
+REPLACEB		= ЗАМЕНИТЬБ				##	Заменяет знаки в тексте.
+REPT			= ПОВТОР				##	Повторяет текст заданное число раз.
+RIGHT			= ПРАВСИМВ				##	Возвращает крайние справа знаки текстовой строки.
+RIGHTB			= ПРАВБ					##	Возвращает крайние справа знаки текстовой строки.
+SEARCH			= ПОИСК					##	Ищет вхождения одного текстового значения в другом (без учета регистра).
+SEARCHB			= ПОИСКБ				##	Ищет вхождения одного текстового значения в другом (без учета регистра).
+SUBSTITUTE		= ПОДСТАВИТЬ				##	Заменяет в текстовой строке старый текст новым.
+T			= Т					##	Преобразует аргументы в текст.
+TEXT			= ТЕКСТ					##	Форматирует число и преобразует его в текст.
+TRIM			= СЖПРОБЕЛЫ				##	Удаляет из текста пробелы.
+UPPER			= ПРОПИСН				##	Преобразует все буквы текста в прописные.
+VALUE			= ЗНАЧЕН				##	Преобразует текстовый аргумент в число.

PhpOffice/PhpSpreadsheet/Calculation/locale/sv/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= kr
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #Skärning!
+DIV0	= #Division/0!
+VALUE	= #Värdefel!
+REF	= #Referens!
+NAME	= #Namn?
+NUM	= #Ogiltigt!
+NA	= #Saknas!

PhpOffice/PhpSpreadsheet/Calculation/locale/tr/config

@@ -0,0 +1,24 @@
+##
+## PhpSpreadsheet
+##
+
+ArgumentSeparator	= ;
+
+
+##
+##	(For future use)
+##
+currencySymbol	= YTL
+
+
+##
+##	Excel Error Codes	(For future use)
+
+##
+NULL	= #BOŞ!
+DIV0	= #SAYI/0!
+VALUE	= #DEĞER!
+REF	= #BAŞV!
+NAME	= #AD?
+NUM	= #SAYI!
+NA	= #YOK

PhpOffice/PhpSpreadsheet/Calculation/locale/tr/functions

@@ -1,29 +1,7 @@
 ##
-## PHPExcel
+## PhpSpreadsheet
 ##
-## Copyright (c) 2006 - 2013 PHPExcel
+## Data in this file derived from https://www.excel-function-translation.com/
-##
-## This library is free software; you can redistribute it and/or
-## modify it under the terms of the GNU Lesser General Public
-## License as published by the Free Software Foundation; either
-## version 2.1 of the License, or (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-## Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public
-## License along with this library; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-##
-## @category   PHPExcel
-## @package    PHPExcel_Calculation
-## @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
-## @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
-## @version    ##VERSION##, ##DATE##
-##
-## Data in this file derived from http://www.piuha.fi/excel-function-name-translation/
 ##
 ##
 

PhpOffice/PhpSpreadsheet/Cell/AdvancedValueBinder.php

@@ -0,0 +1,176 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+use PhpOffice\PhpSpreadsheet\Shared\Date;
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
+
+class AdvancedValueBinder extends DefaultValueBinder implements IValueBinder
+{
+    /**
+     * Bind value to a cell.
+     *
+     * @param Cell $cell Cell to bind value to
+     * @param mixed $value Value to bind in cell
+     *
+     * @throws \PhpOffice\PhpSpreadsheet\Exception
+     *
+     * @return bool
+     */
+    public function bindValue(Cell $cell, $value = null)
+    {
+        // sanitize UTF-8 strings
+        if (is_string($value)) {
+            $value = StringHelper::sanitizeUTF8($value);
+        }
+
+        // Find out data type
+        $dataType = parent::dataTypeForValue($value);
+
+        // Style logic - strings
+        if ($dataType === DataType::TYPE_STRING && !$value instanceof RichText) {
+            //    Test for booleans using locale-setting
+            if ($value == Calculation::getTRUE()) {
+                $cell->setValueExplicit(true, DataType::TYPE_BOOL);
+
+                return true;
+            } elseif ($value == Calculation::getFALSE()) {
+                $cell->setValueExplicit(false, DataType::TYPE_BOOL);
+
+                return true;
+            }
+
+            // Check for number in scientific format
+            if (preg_match('/^' . Calculation::CALCULATION_REGEXP_NUMBER . '$/', $value)) {
+                $cell->setValueExplicit((float) $value, DataType::TYPE_NUMERIC);
+
+                return true;
+            }
+
+            // Check for fraction
+            if (preg_match('/^([+-]?)\s*(\d+)\s?\/\s*(\d+)$/', $value, $matches)) {
+                // Convert value to number
+                $value = $matches[2] / $matches[3];
+                if ($matches[1] == '-') {
+                    $value = 0 - $value;
+                }
+                $cell->setValueExplicit((float) $value, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode('??/??');
+
+                return true;
+            } elseif (preg_match('/^([+-]?)(\d*) +(\d*)\s?\/\s*(\d*)$/', $value, $matches)) {
+                // Convert value to number
+                $value = $matches[2] + ($matches[3] / $matches[4]);
+                if ($matches[1] == '-') {
+                    $value = 0 - $value;
+                }
+                $cell->setValueExplicit((float) $value, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode('# ??/??');
+
+                return true;
+            }
+
+            // Check for percentage
+            if (preg_match('/^\-?\d*\.?\d*\s?\%$/', $value)) {
+                // Convert value to number
+                $value = (float) str_replace('%', '', $value) / 100;
+                $cell->setValueExplicit($value, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode(NumberFormat::FORMAT_PERCENTAGE_00);
+
+                return true;
+            }
+
+            // Check for currency
+            $currencyCode = StringHelper::getCurrencyCode();
+            $decimalSeparator = StringHelper::getDecimalSeparator();
+            $thousandsSeparator = StringHelper::getThousandsSeparator();
+            if (preg_match('/^' . preg_quote($currencyCode, '/') . ' *(\d{1,3}(' . preg_quote($thousandsSeparator, '/') . '\d{3})*|(\d+))(' . preg_quote($decimalSeparator, '/') . '\d{2})?$/', $value)) {
+                // Convert value to number
+                $value = (float) trim(str_replace([$currencyCode, $thousandsSeparator, $decimalSeparator], ['', '', '.'], $value));
+                $cell->setValueExplicit($value, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode(
+                        str_replace('$', $currencyCode, NumberFormat::FORMAT_CURRENCY_USD_SIMPLE)
+                    );
+
+                return true;
+            } elseif (preg_match('/^\$ *(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$/', $value)) {
+                // Convert value to number
+                $value = (float) trim(str_replace(['$', ','], '', $value));
+                $cell->setValueExplicit($value, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode(NumberFormat::FORMAT_CURRENCY_USD_SIMPLE);
+
+                return true;
+            }
+
+            // Check for time without seconds e.g. '9:45', '09:45'
+            if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d$/', $value)) {
+                // Convert value to number
+                [$h, $m] = explode(':', $value);
+                $days = $h / 24 + $m / 1440;
+                $cell->setValueExplicit($days, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode(NumberFormat::FORMAT_DATE_TIME3);
+
+                return true;
+            }
+
+            // Check for time with seconds '9:45:59', '09:45:59'
+            if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d:[0-5]\d$/', $value)) {
+                // Convert value to number
+                [$h, $m, $s] = explode(':', $value);
+                $days = $h / 24 + $m / 1440 + $s / 86400;
+                // Convert value to number
+                $cell->setValueExplicit($days, DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode(NumberFormat::FORMAT_DATE_TIME4);
+
+                return true;
+            }
+
+            // Check for datetime, e.g. '2008-12-31', '2008-12-31 15:59', '2008-12-31 15:59:10'
+            if (($d = Date::stringToExcel($value)) !== false) {
+                // Convert value to number
+                $cell->setValueExplicit($d, DataType::TYPE_NUMERIC);
+                // Determine style. Either there is a time part or not. Look for ':'
+                if (strpos($value, ':') !== false) {
+                    $formatCode = 'yyyy-mm-dd h:mm';
+                } else {
+                    $formatCode = 'yyyy-mm-dd';
+                }
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getNumberFormat()->setFormatCode($formatCode);
+
+                return true;
+            }
+
+            // Check for newline character "\n"
+            if (strpos($value, "\n") !== false) {
+                $value = StringHelper::sanitizeUTF8($value);
+                $cell->setValueExplicit($value, DataType::TYPE_STRING);
+                // Set style
+                $cell->getWorksheet()->getStyle($cell->getCoordinate())
+                    ->getAlignment()->setWrapText(true);
+
+                return true;
+            }
+        }
+
+        // Not bound yet? Use parent...
+        return parent::bindValue($cell, $value);
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/Cell.php

@@ -0,0 +1,698 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+use PhpOffice\PhpSpreadsheet\Collection\Cells;
+use PhpOffice\PhpSpreadsheet\Exception;
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
+use PhpOffice\PhpSpreadsheet\Style\Style;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class Cell
+{
+    /**
+     * Value binder to use.
+     *
+     * @var IValueBinder
+     */
+    private static $valueBinder;
+
+    /**
+     * Value of the cell.
+     *
+     * @var mixed
+     */
+    private $value;
+
+    /**
+     *    Calculated value of the cell (used for caching)
+     *    This returns the value last calculated by MS Excel or whichever spreadsheet program was used to
+     *        create the original spreadsheet file.
+     *    Note that this value is not guaranteed to reflect the actual calculated value because it is
+     *        possible that auto-calculation was disabled in the original spreadsheet, and underlying data
+     *        values used by the formula have changed since it was last calculated.
+     *
+     * @var mixed
+     */
+    private $calculatedValue;
+
+    /**
+     * Type of the cell data.
+     *
+     * @var string
+     */
+    private $dataType;
+
+    /**
+     * Collection of cells.
+     *
+     * @var Cells
+     */
+    private $parent;
+
+    /**
+     * Index to cellXf.
+     *
+     * @var int
+     */
+    private $xfIndex = 0;
+
+    /**
+     * Attributes of the formula.
+     */
+    private $formulaAttributes;
+
+    /**
+     * Update the cell into the cell collection.
+     *
+     * @return self
+     */
+    public function updateInCollection()
+    {
+        $this->parent->update($this);
+
+        return $this;
+    }
+
+    public function detach()
+    {
+        $this->parent = null;
+    }
+
+    public function attach(Cells $parent)
+    {
+        $this->parent = $parent;
+    }
+
+    /**
+     * Create a new Cell.
+     *
+     * @param mixed $pValue
+     * @param string $pDataType
+     * @param Worksheet $pSheet
+     *
+     * @throws Exception
+     */
+    public function __construct($pValue, $pDataType, Worksheet $pSheet)
+    {
+        // Initialise cell value
+        $this->value = $pValue;
+
+        // Set worksheet cache
+        $this->parent = $pSheet->getCellCollection();
+
+        // Set datatype?
+        if ($pDataType !== null) {
+            if ($pDataType == DataType::TYPE_STRING2) {
+                $pDataType = DataType::TYPE_STRING;
+            }
+            $this->dataType = $pDataType;
+        } elseif (!self::getValueBinder()->bindValue($this, $pValue)) {
+            throw new Exception('Value could not be bound to cell.');
+        }
+    }
+
+    /**
+     * Get cell coordinate column.
+     *
+     * @return string
+     */
+    public function getColumn()
+    {
+        return $this->parent->getCurrentColumn();
+    }
+
+    /**
+     * Get cell coordinate row.
+     *
+     * @return int
+     */
+    public function getRow()
+    {
+        return $this->parent->getCurrentRow();
+    }
+
+    /**
+     * Get cell coordinate.
+     *
+     * @return string
+     */
+    public function getCoordinate()
+    {
+        return $this->parent->getCurrentCoordinate();
+    }
+
+    /**
+     * Get cell value.
+     *
+     * @return mixed
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Get cell value with formatting.
+     *
+     * @return string
+     */
+    public function getFormattedValue()
+    {
+        return (string) NumberFormat::toFormattedString(
+            $this->getCalculatedValue(),
+            $this->getStyle()
+                ->getNumberFormat()->getFormatCode()
+        );
+    }
+
+    /**
+     * Set cell value.
+     *
+     *    Sets the value for a cell, automatically determining the datatype using the value binder
+     *
+     * @param mixed $pValue Value
+     *
+     * @throws Exception
+     *
+     * @return Cell
+     */
+    public function setValue($pValue)
+    {
+        if (!self::getValueBinder()->bindValue($this, $pValue)) {
+            throw new Exception('Value could not be bound to cell.');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the value for a cell, with the explicit data type passed to the method (bypassing any use of the value binder).
+     *
+     * @param mixed $pValue Value
+     * @param string $pDataType Explicit data type, see DataType::TYPE_*
+     *
+     * @throws Exception
+     *
+     * @return Cell
+     */
+    public function setValueExplicit($pValue, $pDataType)
+    {
+        // set the value according to data type
+        switch ($pDataType) {
+            case DataType::TYPE_NULL:
+                $this->value = $pValue;
+
+                break;
+            case DataType::TYPE_STRING2:
+                $pDataType = DataType::TYPE_STRING;
+                // no break
+            case DataType::TYPE_STRING:
+                // Synonym for string
+            case DataType::TYPE_INLINE:
+                // Rich text
+                $this->value = DataType::checkString($pValue);
+
+                break;
+            case DataType::TYPE_NUMERIC:
+                $this->value = (float) $pValue;
+
+                break;
+            case DataType::TYPE_FORMULA:
+                $this->value = (string) $pValue;
+
+                break;
+            case DataType::TYPE_BOOL:
+                $this->value = (bool) $pValue;
+
+                break;
+            case DataType::TYPE_ERROR:
+                $this->value = DataType::checkErrorCode($pValue);
+
+                break;
+            default:
+                throw new Exception('Invalid datatype: ' . $pDataType);
+
+                break;
+        }
+
+        // set the datatype
+        $this->dataType = $pDataType;
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     * Get calculated cell value.
+     *
+     * @param bool $resetLog Whether the calculation engine logger should be reset or not
+     *
+     * @throws Exception
+     *
+     * @return mixed
+     */
+    public function getCalculatedValue($resetLog = true)
+    {
+        if ($this->dataType == DataType::TYPE_FORMULA) {
+            try {
+                $result = Calculation::getInstance(
+                    $this->getWorksheet()->getParent()
+                )->calculateCellValue($this, $resetLog);
+                //    We don't yet handle array returns
+                if (is_array($result)) {
+                    while (is_array($result)) {
+                        $result = array_pop($result);
+                    }
+                }
+            } catch (Exception $ex) {
+                if (($ex->getMessage() === 'Unable to access External Workbook') && ($this->calculatedValue !== null)) {
+                    return $this->calculatedValue; // Fallback for calculations referencing external files.
+                }
+
+                throw new \PhpOffice\PhpSpreadsheet\Calculation\Exception(
+                    $this->getWorksheet()->getTitle() . '!' . $this->getCoordinate() . ' -> ' . $ex->getMessage()
+                );
+            }
+
+            if ($result === '#Not Yet Implemented') {
+                return $this->calculatedValue; // Fallback if calculation engine does not support the formula.
+            }
+
+            return $result;
+        } elseif ($this->value instanceof RichText) {
+            return $this->value->getPlainText();
+        }
+
+        return $this->value;
+    }
+
+    /**
+     * Set old calculated value (cached).
+     *
+     * @param mixed $pValue Value
+     *
+     * @return Cell
+     */
+    public function setCalculatedValue($pValue)
+    {
+        if ($pValue !== null) {
+            $this->calculatedValue = (is_numeric($pValue)) ? (float) $pValue : $pValue;
+        }
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     *    Get old calculated value (cached)
+     *    This returns the value last calculated by MS Excel or whichever spreadsheet program was used to
+     *        create the original spreadsheet file.
+     *    Note that this value is not guaranteed to reflect the actual calculated value because it is
+     *        possible that auto-calculation was disabled in the original spreadsheet, and underlying data
+     *        values used by the formula have changed since it was last calculated.
+     *
+     * @return mixed
+     */
+    public function getOldCalculatedValue()
+    {
+        return $this->calculatedValue;
+    }
+
+    /**
+     * Get cell data type.
+     *
+     * @return string
+     */
+    public function getDataType()
+    {
+        return $this->dataType;
+    }
+
+    /**
+     * Set cell data type.
+     *
+     * @param string $pDataType see DataType::TYPE_*
+     *
+     * @return Cell
+     */
+    public function setDataType($pDataType)
+    {
+        if ($pDataType == DataType::TYPE_STRING2) {
+            $pDataType = DataType::TYPE_STRING;
+        }
+        $this->dataType = $pDataType;
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     * Identify if the cell contains a formula.
+     *
+     * @return bool
+     */
+    public function isFormula()
+    {
+        return $this->dataType == DataType::TYPE_FORMULA;
+    }
+
+    /**
+     *    Does this cell contain Data validation rules?
+     *
+     * @throws Exception
+     *
+     * @return bool
+     */
+    public function hasDataValidation()
+    {
+        if (!isset($this->parent)) {
+            throw new Exception('Cannot check for data validation when cell is not bound to a worksheet');
+        }
+
+        return $this->getWorksheet()->dataValidationExists($this->getCoordinate());
+    }
+
+    /**
+     * Get Data validation rules.
+     *
+     * @throws Exception
+     *
+     * @return DataValidation
+     */
+    public function getDataValidation()
+    {
+        if (!isset($this->parent)) {
+            throw new Exception('Cannot get data validation for cell that is not bound to a worksheet');
+        }
+
+        return $this->getWorksheet()->getDataValidation($this->getCoordinate());
+    }
+
+    /**
+     * Set Data validation rules.
+     *
+     * @param DataValidation $pDataValidation
+     *
+     * @throws Exception
+     *
+     * @return Cell
+     */
+    public function setDataValidation(DataValidation $pDataValidation = null)
+    {
+        if (!isset($this->parent)) {
+            throw new Exception('Cannot set data validation for cell that is not bound to a worksheet');
+        }
+
+        $this->getWorksheet()->setDataValidation($this->getCoordinate(), $pDataValidation);
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     * Does this cell contain valid value?
+     *
+     * @return bool
+     */
+    public function hasValidValue()
+    {
+        $validator = new DataValidator();
+
+        return $validator->isValid($this);
+    }
+
+    /**
+     * Does this cell contain a Hyperlink?
+     *
+     * @throws Exception
+     *
+     * @return bool
+     */
+    public function hasHyperlink()
+    {
+        if (!isset($this->parent)) {
+            throw new Exception('Cannot check for hyperlink when cell is not bound to a worksheet');
+        }
+
+        return $this->getWorksheet()->hyperlinkExists($this->getCoordinate());
+    }
+
+    /**
+     * Get Hyperlink.
+     *
+     * @throws Exception
+     *
+     * @return Hyperlink
+     */
+    public function getHyperlink()
+    {
+        if (!isset($this->parent)) {
+            throw new Exception('Cannot get hyperlink for cell that is not bound to a worksheet');
+        }
+
+        return $this->getWorksheet()->getHyperlink($this->getCoordinate());
+    }
+
+    /**
+     * Set Hyperlink.
+     *
+     * @param Hyperlink $pHyperlink
+     *
+     * @throws Exception
+     *
+     * @return Cell
+     */
+    public function setHyperlink(Hyperlink $pHyperlink = null)
+    {
+        if (!isset($this->parent)) {
+            throw new Exception('Cannot set hyperlink for cell that is not bound to a worksheet');
+        }
+
+        $this->getWorksheet()->setHyperlink($this->getCoordinate(), $pHyperlink);
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     * Get cell collection.
+     *
+     * @return Cells
+     */
+    public function getParent()
+    {
+        return $this->parent;
+    }
+
+    /**
+     * Get parent worksheet.
+     *
+     * @return Worksheet
+     */
+    public function getWorksheet()
+    {
+        return $this->parent->getParent();
+    }
+
+    /**
+     * Is this cell in a merge range.
+     *
+     * @return bool
+     */
+    public function isInMergeRange()
+    {
+        return (bool) $this->getMergeRange();
+    }
+
+    /**
+     * Is this cell the master (top left cell) in a merge range (that holds the actual data value).
+     *
+     * @return bool
+     */
+    public function isMergeRangeValueCell()
+    {
+        if ($mergeRange = $this->getMergeRange()) {
+            $mergeRange = Coordinate::splitRange($mergeRange);
+            [$startCell] = $mergeRange[0];
+            if ($this->getCoordinate() === $startCell) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * If this cell is in a merge range, then return the range.
+     *
+     * @return false|string
+     */
+    public function getMergeRange()
+    {
+        foreach ($this->getWorksheet()->getMergeCells() as $mergeRange) {
+            if ($this->isInRange($mergeRange)) {
+                return $mergeRange;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Get cell style.
+     *
+     * @return Style
+     */
+    public function getStyle()
+    {
+        return $this->getWorksheet()->getStyle($this->getCoordinate());
+    }
+
+    /**
+     * Re-bind parent.
+     *
+     * @param Worksheet $parent
+     *
+     * @return Cell
+     */
+    public function rebindParent(Worksheet $parent)
+    {
+        $this->parent = $parent->getCellCollection();
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     *    Is cell in a specific range?
+     *
+     * @param string $pRange Cell range (e.g. A1:A1)
+     *
+     * @return bool
+     */
+    public function isInRange($pRange)
+    {
+        [$rangeStart, $rangeEnd] = Coordinate::rangeBoundaries($pRange);
+
+        // Translate properties
+        $myColumn = Coordinate::columnIndexFromString($this->getColumn());
+        $myRow = $this->getRow();
+
+        // Verify if cell is in range
+        return ($rangeStart[0] <= $myColumn) && ($rangeEnd[0] >= $myColumn) &&
+                ($rangeStart[1] <= $myRow) && ($rangeEnd[1] >= $myRow);
+    }
+
+    /**
+     * Compare 2 cells.
+     *
+     * @param Cell $a Cell a
+     * @param Cell $b Cell b
+     *
+     * @return int Result of comparison (always -1 or 1, never zero!)
+     */
+    public static function compareCells(self $a, self $b)
+    {
+        if ($a->getRow() < $b->getRow()) {
+            return -1;
+        } elseif ($a->getRow() > $b->getRow()) {
+            return 1;
+        } elseif (Coordinate::columnIndexFromString($a->getColumn()) < Coordinate::columnIndexFromString($b->getColumn())) {
+            return -1;
+        }
+
+        return 1;
+    }
+
+    /**
+     * Get value binder to use.
+     *
+     * @return IValueBinder
+     */
+    public static function getValueBinder()
+    {
+        if (self::$valueBinder === null) {
+            self::$valueBinder = new DefaultValueBinder();
+        }
+
+        return self::$valueBinder;
+    }
+
+    /**
+     * Set value binder to use.
+     *
+     * @param IValueBinder $binder
+     */
+    public static function setValueBinder(IValueBinder $binder)
+    {
+        self::$valueBinder = $binder;
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if ((is_object($value)) && ($key != 'parent')) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+
+    /**
+     * Get index to cellXf.
+     *
+     * @return int
+     */
+    public function getXfIndex()
+    {
+        return $this->xfIndex;
+    }
+
+    /**
+     * Set index to cellXf.
+     *
+     * @param int $pValue
+     *
+     * @return Cell
+     */
+    public function setXfIndex($pValue)
+    {
+        $this->xfIndex = $pValue;
+
+        return $this->updateInCollection();
+    }
+
+    /**
+     * Set the formula attributes.
+     *
+     * @param mixed $pAttributes
+     *
+     * @return Cell
+     */
+    public function setFormulaAttributes($pAttributes)
+    {
+        $this->formulaAttributes = $pAttributes;
+
+        return $this;
+    }
+
+    /**
+     * Get the formula attributes.
+     */
+    public function getFormulaAttributes()
+    {
+        return $this->formulaAttributes;
+    }
+
+    /**
+     * Convert to string.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return (string) $this->getValue();
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/Coordinate.php

@@ -0,0 +1,520 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use PhpOffice\PhpSpreadsheet\Exception;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+/**
+ * Helper class to manipulate cell coordinates.
+ *
+ * Columns indexes and rows are always based on 1, **not** on 0. This match the behavior
+ * that Excel users are used to, and also match the Excel functions `COLUMN()` and `ROW()`.
+ */
+abstract class Coordinate
+{
+    /**
+     * Default range variable constant.
+     *
+     * @var string
+     */
+    const DEFAULT_RANGE = 'A1:A1';
+
+    /**
+     * Coordinate from string.
+     *
+     * @param string $pCoordinateString eg: 'A1'
+     *
+     * @throws Exception
+     *
+     * @return string[] Array containing column and row (indexes 0 and 1)
+     */
+    public static function coordinateFromString($pCoordinateString)
+    {
+        if (preg_match('/^([$]?[A-Z]{1,3})([$]?\\d{1,7})$/', $pCoordinateString, $matches)) {
+            return [$matches[1], $matches[2]];
+        } elseif (self::coordinateIsRange($pCoordinateString)) {
+            throw new Exception('Cell coordinate string can not be a range of cells');
+        } elseif ($pCoordinateString == '') {
+            throw new Exception('Cell coordinate can not be zero-length string');
+        }
+
+        throw new Exception('Invalid cell coordinate ' . $pCoordinateString);
+    }
+
+    /**
+     * Checks if a coordinate represents a range of cells.
+     *
+     * @param string $coord eg: 'A1' or 'A1:A2' or 'A1:A2,C1:C2'
+     *
+     * @return bool Whether the coordinate represents a range of cells
+     */
+    public static function coordinateIsRange($coord)
+    {
+        return (strpos($coord, ':') !== false) || (strpos($coord, ',') !== false);
+    }
+
+    /**
+     * Make string row, column or cell coordinate absolute.
+     *
+     * @param string $pCoordinateString e.g. 'A' or '1' or 'A1'
+     *                    Note that this value can be a row or column reference as well as a cell reference
+     *
+     * @throws Exception
+     *
+     * @return string Absolute coordinate        e.g. '$A' or '$1' or '$A$1'
+     */
+    public static function absoluteReference($pCoordinateString)
+    {
+        if (self::coordinateIsRange($pCoordinateString)) {
+            throw new Exception('Cell coordinate string can not be a range of cells');
+        }
+
+        // Split out any worksheet name from the reference
+        [$worksheet, $pCoordinateString] = Worksheet::extractSheetTitle($pCoordinateString, true);
+        if ($worksheet > '') {
+            $worksheet .= '!';
+        }
+
+        // Create absolute coordinate
+        if (ctype_digit($pCoordinateString)) {
+            return $worksheet . '$' . $pCoordinateString;
+        } elseif (ctype_alpha($pCoordinateString)) {
+            return $worksheet . '$' . strtoupper($pCoordinateString);
+        }
+
+        return $worksheet . self::absoluteCoordinate($pCoordinateString);
+    }
+
+    /**
+     * Make string coordinate absolute.
+     *
+     * @param string $pCoordinateString e.g. 'A1'
+     *
+     * @throws Exception
+     *
+     * @return string Absolute coordinate        e.g. '$A$1'
+     */
+    public static function absoluteCoordinate($pCoordinateString)
+    {
+        if (self::coordinateIsRange($pCoordinateString)) {
+            throw new Exception('Cell coordinate string can not be a range of cells');
+        }
+
+        // Split out any worksheet name from the coordinate
+        [$worksheet, $pCoordinateString] = Worksheet::extractSheetTitle($pCoordinateString, true);
+        if ($worksheet > '') {
+            $worksheet .= '!';
+        }
+
+        // Create absolute coordinate
+        [$column, $row] = self::coordinateFromString($pCoordinateString);
+        $column = ltrim($column, '$');
+        $row = ltrim($row, '$');
+
+        return $worksheet . '$' . $column . '$' . $row;
+    }
+
+    /**
+     * Split range into coordinate strings.
+     *
+     * @param string $pRange e.g. 'B4:D9' or 'B4:D9,H2:O11' or 'B4'
+     *
+     * @return array Array containing one or more arrays containing one or two coordinate strings
+     *                                e.g. ['B4','D9'] or [['B4','D9'], ['H2','O11']]
+     *                                        or ['B4']
+     */
+    public static function splitRange($pRange)
+    {
+        // Ensure $pRange is a valid range
+        if (empty($pRange)) {
+            $pRange = self::DEFAULT_RANGE;
+        }
+
+        $exploded = explode(',', $pRange);
+        $counter = count($exploded);
+        for ($i = 0; $i < $counter; ++$i) {
+            $exploded[$i] = explode(':', $exploded[$i]);
+        }
+
+        return $exploded;
+    }
+
+    /**
+     * Build range from coordinate strings.
+     *
+     * @param array $pRange Array containg one or more arrays containing one or two coordinate strings
+     *
+     * @throws Exception
+     *
+     * @return string String representation of $pRange
+     */
+    public static function buildRange(array $pRange)
+    {
+        // Verify range
+        if (empty($pRange) || !is_array($pRange[0])) {
+            throw new Exception('Range does not contain any information');
+        }
+
+        // Build range
+        $counter = count($pRange);
+        for ($i = 0; $i < $counter; ++$i) {
+            $pRange[$i] = implode(':', $pRange[$i]);
+        }
+
+        return implode(',', $pRange);
+    }
+
+    /**
+     * Calculate range boundaries.
+     *
+     * @param string $pRange Cell range (e.g. A1:A1)
+     *
+     * @return array Range coordinates [Start Cell, End Cell]
+     *                    where Start Cell and End Cell are arrays (Column Number, Row Number)
+     */
+    public static function rangeBoundaries($pRange)
+    {
+        // Ensure $pRange is a valid range
+        if (empty($pRange)) {
+            $pRange = self::DEFAULT_RANGE;
+        }
+
+        // Uppercase coordinate
+        $pRange = strtoupper($pRange);
+
+        // Extract range
+        if (strpos($pRange, ':') === false) {
+            $rangeA = $rangeB = $pRange;
+        } else {
+            [$rangeA, $rangeB] = explode(':', $pRange);
+        }
+
+        // Calculate range outer borders
+        $rangeStart = self::coordinateFromString($rangeA);
+        $rangeEnd = self::coordinateFromString($rangeB);
+
+        // Translate column into index
+        $rangeStart[0] = self::columnIndexFromString($rangeStart[0]);
+        $rangeEnd[0] = self::columnIndexFromString($rangeEnd[0]);
+
+        return [$rangeStart, $rangeEnd];
+    }
+
+    /**
+     * Calculate range dimension.
+     *
+     * @param string $pRange Cell range (e.g. A1:A1)
+     *
+     * @return array Range dimension (width, height)
+     */
+    public static function rangeDimension($pRange)
+    {
+        // Calculate range outer borders
+        [$rangeStart, $rangeEnd] = self::rangeBoundaries($pRange);
+
+        return [($rangeEnd[0] - $rangeStart[0] + 1), ($rangeEnd[1] - $rangeStart[1] + 1)];
+    }
+
+    /**
+     * Calculate range boundaries.
+     *
+     * @param string $pRange Cell range (e.g. A1:A1)
+     *
+     * @return array Range coordinates [Start Cell, End Cell]
+     *                    where Start Cell and End Cell are arrays [Column ID, Row Number]
+     */
+    public static function getRangeBoundaries($pRange)
+    {
+        // Ensure $pRange is a valid range
+        if (empty($pRange)) {
+            $pRange = self::DEFAULT_RANGE;
+        }
+
+        // Uppercase coordinate
+        $pRange = strtoupper($pRange);
+
+        // Extract range
+        if (strpos($pRange, ':') === false) {
+            $rangeA = $rangeB = $pRange;
+        } else {
+            [$rangeA, $rangeB] = explode(':', $pRange);
+        }
+
+        return [self::coordinateFromString($rangeA), self::coordinateFromString($rangeB)];
+    }
+
+    /**
+     * Column index from string.
+     *
+     * @param string $pString eg 'A'
+     *
+     * @return int Column index (A = 1)
+     */
+    public static function columnIndexFromString($pString)
+    {
+        //    Using a lookup cache adds a slight memory overhead, but boosts speed
+        //    caching using a static within the method is faster than a class static,
+        //        though it's additional memory overhead
+        static $indexCache = [];
+
+        if (isset($indexCache[$pString])) {
+            return $indexCache[$pString];
+        }
+        //    It's surprising how costly the strtoupper() and ord() calls actually are, so we use a lookup array rather than use ord()
+        //        and make it case insensitive to get rid of the strtoupper() as well. Because it's a static, there's no significant
+        //        memory overhead either
+        static $columnLookup = [
+            'A' => 1, 'B' => 2, 'C' => 3, 'D' => 4, 'E' => 5, 'F' => 6, 'G' => 7, 'H' => 8, 'I' => 9, 'J' => 10, 'K' => 11, 'L' => 12, 'M' => 13,
+            'N' => 14, 'O' => 15, 'P' => 16, 'Q' => 17, 'R' => 18, 'S' => 19, 'T' => 20, 'U' => 21, 'V' => 22, 'W' => 23, 'X' => 24, 'Y' => 25, 'Z' => 26,
+            'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5, 'f' => 6, 'g' => 7, 'h' => 8, 'i' => 9, 'j' => 10, 'k' => 11, 'l' => 12, 'm' => 13,
+            'n' => 14, 'o' => 15, 'p' => 16, 'q' => 17, 'r' => 18, 's' => 19, 't' => 20, 'u' => 21, 'v' => 22, 'w' => 23, 'x' => 24, 'y' => 25, 'z' => 26,
+        ];
+
+        //    We also use the language construct isset() rather than the more costly strlen() function to match the length of $pString
+        //        for improved performance
+        if (isset($pString[0])) {
+            if (!isset($pString[1])) {
+                $indexCache[$pString] = $columnLookup[$pString];
+
+                return $indexCache[$pString];
+            } elseif (!isset($pString[2])) {
+                $indexCache[$pString] = $columnLookup[$pString[0]] * 26 + $columnLookup[$pString[1]];
+
+                return $indexCache[$pString];
+            } elseif (!isset($pString[3])) {
+                $indexCache[$pString] = $columnLookup[$pString[0]] * 676 + $columnLookup[$pString[1]] * 26 + $columnLookup[$pString[2]];
+
+                return $indexCache[$pString];
+            }
+        }
+
+        throw new Exception('Column string index can not be ' . ((isset($pString[0])) ? 'longer than 3 characters' : 'empty'));
+    }
+
+    /**
+     * String from column index.
+     *
+     * @param int $columnIndex Column index (A = 1)
+     *
+     * @return string
+     */
+    public static function stringFromColumnIndex($columnIndex)
+    {
+        static $indexCache = [];
+
+        if (!isset($indexCache[$columnIndex])) {
+            $indexValue = $columnIndex;
+            $base26 = null;
+            do {
+                $characterValue = ($indexValue % 26) ?: 26;
+                $indexValue = ($indexValue - $characterValue) / 26;
+                $base26 = chr($characterValue + 64) . ($base26 ?: '');
+            } while ($indexValue > 0);
+            $indexCache[$columnIndex] = $base26;
+        }
+
+        return $indexCache[$columnIndex];
+    }
+
+    /**
+     * Extract all cell references in range, which may be comprised of multiple cell ranges.
+     *
+     * @param string $pRange Range (e.g. A1 or A1:C10 or A1:E10 A20:E25)
+     *
+     * @return array Array containing single cell references
+     */
+    public static function extractAllCellReferencesInRange($pRange)
+    {
+        $returnValue = [];
+
+        // Explode spaces
+        $cellBlocks = self::getCellBlocksFromRangeString($pRange);
+        foreach ($cellBlocks as $cellBlock) {
+            $returnValue = array_merge($returnValue, self::getReferencesForCellBlock($cellBlock));
+        }
+
+        //    Sort the result by column and row
+        $sortKeys = [];
+        foreach (array_unique($returnValue) as $coord) {
+            $column = '';
+            $row = 0;
+
+            sscanf($coord, '%[A-Z]%d', $column, $row);
+            $sortKeys[sprintf('%3s%09d', $column, $row)] = $coord;
+        }
+        ksort($sortKeys);
+
+        // Return value
+        return array_values($sortKeys);
+    }
+
+    /**
+     * Get all cell references for an individual cell block.
+     *
+     * @param string $cellBlock A cell range e.g. A4:B5
+     *
+     * @return array All individual cells in that range
+     */
+    private static function getReferencesForCellBlock($cellBlock)
+    {
+        $returnValue = [];
+
+        // Single cell?
+        if (!self::coordinateIsRange($cellBlock)) {
+            return (array) $cellBlock;
+        }
+
+        // Range...
+        $ranges = self::splitRange($cellBlock);
+        foreach ($ranges as $range) {
+            // Single cell?
+            if (!isset($range[1])) {
+                $returnValue[] = $range[0];
+
+                continue;
+            }
+
+            // Range...
+            [$rangeStart, $rangeEnd] = $range;
+            [$startColumn, $startRow] = self::coordinateFromString($rangeStart);
+            [$endColumn, $endRow] = self::coordinateFromString($rangeEnd);
+            $startColumnIndex = self::columnIndexFromString($startColumn);
+            $endColumnIndex = self::columnIndexFromString($endColumn);
+            ++$endColumnIndex;
+
+            // Current data
+            $currentColumnIndex = $startColumnIndex;
+            $currentRow = $startRow;
+
+            self::validateRange($cellBlock, $startColumnIndex, $endColumnIndex, $currentRow, $endRow);
+
+            // Loop cells
+            while ($currentColumnIndex < $endColumnIndex) {
+                while ($currentRow <= $endRow) {
+                    $returnValue[] = self::stringFromColumnIndex($currentColumnIndex) . $currentRow;
+                    ++$currentRow;
+                }
+                ++$currentColumnIndex;
+                $currentRow = $startRow;
+            }
+        }
+
+        return $returnValue;
+    }
+
+    /**
+     * Convert an associative array of single cell coordinates to values to an associative array
+     * of cell ranges to values.  Only adjacent cell coordinates with the same
+     * value will be merged.  If the value is an object, it must implement the method getHashCode().
+     *
+     * For example, this function converts:
+     *
+     *    [ 'A1' => 'x', 'A2' => 'x', 'A3' => 'x', 'A4' => 'y' ]
+     *
+     * to:
+     *
+     *    [ 'A1:A3' => 'x', 'A4' => 'y' ]
+     *
+     * @param array $pCoordCollection associative array mapping coordinates to values
+     *
+     * @return array associative array mapping coordinate ranges to valuea
+     */
+    public static function mergeRangesInCollection(array $pCoordCollection)
+    {
+        $hashedValues = [];
+        $mergedCoordCollection = [];
+
+        foreach ($pCoordCollection as $coord => $value) {
+            if (self::coordinateIsRange($coord)) {
+                $mergedCoordCollection[$coord] = $value;
+
+                continue;
+            }
+
+            [$column, $row] = self::coordinateFromString($coord);
+            $row = (int) (ltrim($row, '$'));
+            $hashCode = $column . '-' . (is_object($value) ? $value->getHashCode() : $value);
+
+            if (!isset($hashedValues[$hashCode])) {
+                $hashedValues[$hashCode] = (object) [
+                    'value' => $value,
+                    'col' => $column,
+                    'rows' => [$row],
+                ];
+            } else {
+                $hashedValues[$hashCode]->rows[] = $row;
+            }
+        }
+
+        ksort($hashedValues);
+
+        foreach ($hashedValues as $hashedValue) {
+            sort($hashedValue->rows);
+            $rowStart = null;
+            $rowEnd = null;
+            $ranges = [];
+
+            foreach ($hashedValue->rows as $row) {
+                if ($rowStart === null) {
+                    $rowStart = $row;
+                    $rowEnd = $row;
+                } elseif ($rowEnd === $row - 1) {
+                    $rowEnd = $row;
+                } else {
+                    if ($rowStart == $rowEnd) {
+                        $ranges[] = $hashedValue->col . $rowStart;
+                    } else {
+                        $ranges[] = $hashedValue->col . $rowStart . ':' . $hashedValue->col . $rowEnd;
+                    }
+
+                    $rowStart = $row;
+                    $rowEnd = $row;
+                }
+            }
+
+            if ($rowStart !== null) {
+                if ($rowStart == $rowEnd) {
+                    $ranges[] = $hashedValue->col . $rowStart;
+                } else {
+                    $ranges[] = $hashedValue->col . $rowStart . ':' . $hashedValue->col . $rowEnd;
+                }
+            }
+
+            foreach ($ranges as $range) {
+                $mergedCoordCollection[$range] = $hashedValue->value;
+            }
+        }
+
+        return $mergedCoordCollection;
+    }
+
+    /**
+     * Get the individual cell blocks from a range string, splitting by space and removing any $ characters.
+     *
+     * @param string $pRange
+     *
+     * @return string[]
+     */
+    private static function getCellBlocksFromRangeString($pRange)
+    {
+        return explode(' ', str_replace('$', '', strtoupper($pRange)));
+    }
+
+    /**
+     * Check that the given range is valid, i.e. that the start column and row are not greater than the end column and
+     * row.
+     *
+     * @param string $cellBlock The original range, for displaying a meaningful error message
+     * @param int $startColumnIndex
+     * @param int $endColumnIndex
+     * @param int $currentRow
+     * @param int $endRow
+     */
+    private static function validateRange($cellBlock, $startColumnIndex, $endColumnIndex, $currentRow, $endRow)
+    {
+        if ($startColumnIndex >= $endColumnIndex || $currentRow > $endRow) {
+            throw new Exception('Invalid range: "' . $cellBlock . '"');
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/DataType.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+
+class DataType
+{
+    // Data types
+    const TYPE_STRING2 = 'str';
+    const TYPE_STRING = 's';
+    const TYPE_FORMULA = 'f';
+    const TYPE_NUMERIC = 'n';
+    const TYPE_BOOL = 'b';
+    const TYPE_NULL = 'null';
+    const TYPE_INLINE = 'inlineStr';
+    const TYPE_ERROR = 'e';
+
+    /**
+     * List of error codes.
+     *
+     * @var array
+     */
+    private static $errorCodes = [
+        '#NULL!' => 0,
+        '#DIV/0!' => 1,
+        '#VALUE!' => 2,
+        '#REF!' => 3,
+        '#NAME?' => 4,
+        '#NUM!' => 5,
+        '#N/A' => 6,
+    ];
+
+    /**
+     * Get list of error codes.
+     *
+     * @return array
+     */
+    public static function getErrorCodes()
+    {
+        return self::$errorCodes;
+    }
+
+    /**
+     * Check a string that it satisfies Excel requirements.
+     *
+     * @param null|RichText|string $pValue Value to sanitize to an Excel string
+     *
+     * @return null|RichText|string Sanitized value
+     */
+    public static function checkString($pValue)
+    {
+        if ($pValue instanceof RichText) {
+            // TODO: Sanitize Rich-Text string (max. character count is 32,767)
+            return $pValue;
+        }
+
+        // string must never be longer than 32,767 characters, truncate if necessary
+        $pValue = StringHelper::substring($pValue, 0, 32767);
+
+        // we require that newline is represented as "\n" in core, not as "\r\n" or "\r"
+        $pValue = str_replace(["\r\n", "\r"], "\n", $pValue);
+
+        return $pValue;
+    }
+
+    /**
+     * Check a value that it is a valid error code.
+     *
+     * @param mixed $pValue Value to sanitize to an Excel error code
+     *
+     * @return string Sanitized value
+     */
+    public static function checkErrorCode($pValue)
+    {
+        $pValue = (string) $pValue;
+
+        if (!isset(self::$errorCodes[$pValue])) {
+            $pValue = '#NULL!';
+        }
+
+        return $pValue;
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/DataValidation.php

@@ -0,0 +1,481 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+class DataValidation
+{
+    // Data validation types
+    const TYPE_NONE = 'none';
+    const TYPE_CUSTOM = 'custom';
+    const TYPE_DATE = 'date';
+    const TYPE_DECIMAL = 'decimal';
+    const TYPE_LIST = 'list';
+    const TYPE_TEXTLENGTH = 'textLength';
+    const TYPE_TIME = 'time';
+    const TYPE_WHOLE = 'whole';
+
+    // Data validation error styles
+    const STYLE_STOP = 'stop';
+    const STYLE_WARNING = 'warning';
+    const STYLE_INFORMATION = 'information';
+
+    // Data validation operators
+    const OPERATOR_BETWEEN = 'between';
+    const OPERATOR_EQUAL = 'equal';
+    const OPERATOR_GREATERTHAN = 'greaterThan';
+    const OPERATOR_GREATERTHANOREQUAL = 'greaterThanOrEqual';
+    const OPERATOR_LESSTHAN = 'lessThan';
+    const OPERATOR_LESSTHANOREQUAL = 'lessThanOrEqual';
+    const OPERATOR_NOTBETWEEN = 'notBetween';
+    const OPERATOR_NOTEQUAL = 'notEqual';
+
+    /**
+     * Formula 1.
+     *
+     * @var string
+     */
+    private $formula1 = '';
+
+    /**
+     * Formula 2.
+     *
+     * @var string
+     */
+    private $formula2 = '';
+
+    /**
+     * Type.
+     *
+     * @var string
+     */
+    private $type = self::TYPE_NONE;
+
+    /**
+     * Error style.
+     *
+     * @var string
+     */
+    private $errorStyle = self::STYLE_STOP;
+
+    /**
+     * Operator.
+     *
+     * @var string
+     */
+    private $operator = self::OPERATOR_BETWEEN;
+
+    /**
+     * Allow Blank.
+     *
+     * @var bool
+     */
+    private $allowBlank = false;
+
+    /**
+     * Show DropDown.
+     *
+     * @var bool
+     */
+    private $showDropDown = false;
+
+    /**
+     * Show InputMessage.
+     *
+     * @var bool
+     */
+    private $showInputMessage = false;
+
+    /**
+     * Show ErrorMessage.
+     *
+     * @var bool
+     */
+    private $showErrorMessage = false;
+
+    /**
+     * Error title.
+     *
+     * @var string
+     */
+    private $errorTitle = '';
+
+    /**
+     * Error.
+     *
+     * @var string
+     */
+    private $error = '';
+
+    /**
+     * Prompt title.
+     *
+     * @var string
+     */
+    private $promptTitle = '';
+
+    /**
+     * Prompt.
+     *
+     * @var string
+     */
+    private $prompt = '';
+
+    /**
+     * Create a new DataValidation.
+     */
+    public function __construct()
+    {
+    }
+
+    /**
+     * Get Formula 1.
+     *
+     * @return string
+     */
+    public function getFormula1()
+    {
+        return $this->formula1;
+    }
+
+    /**
+     * Set Formula 1.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setFormula1($value)
+    {
+        $this->formula1 = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Formula 2.
+     *
+     * @return string
+     */
+    public function getFormula2()
+    {
+        return $this->formula2;
+    }
+
+    /**
+     * Set Formula 2.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setFormula2($value)
+    {
+        $this->formula2 = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Type.
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Set Type.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setType($value)
+    {
+        $this->type = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Error style.
+     *
+     * @return string
+     */
+    public function getErrorStyle()
+    {
+        return $this->errorStyle;
+    }
+
+    /**
+     * Set Error style.
+     *
+     * @param string $value see self::STYLE_*
+     *
+     * @return DataValidation
+     */
+    public function setErrorStyle($value)
+    {
+        $this->errorStyle = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Operator.
+     *
+     * @return string
+     */
+    public function getOperator()
+    {
+        return $this->operator;
+    }
+
+    /**
+     * Set Operator.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setOperator($value)
+    {
+        $this->operator = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Allow Blank.
+     *
+     * @return bool
+     */
+    public function getAllowBlank()
+    {
+        return $this->allowBlank;
+    }
+
+    /**
+     * Set Allow Blank.
+     *
+     * @param bool $value
+     *
+     * @return DataValidation
+     */
+    public function setAllowBlank($value)
+    {
+        $this->allowBlank = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Show DropDown.
+     *
+     * @return bool
+     */
+    public function getShowDropDown()
+    {
+        return $this->showDropDown;
+    }
+
+    /**
+     * Set Show DropDown.
+     *
+     * @param bool $value
+     *
+     * @return DataValidation
+     */
+    public function setShowDropDown($value)
+    {
+        $this->showDropDown = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Show InputMessage.
+     *
+     * @return bool
+     */
+    public function getShowInputMessage()
+    {
+        return $this->showInputMessage;
+    }
+
+    /**
+     * Set Show InputMessage.
+     *
+     * @param bool $value
+     *
+     * @return DataValidation
+     */
+    public function setShowInputMessage($value)
+    {
+        $this->showInputMessage = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Show ErrorMessage.
+     *
+     * @return bool
+     */
+    public function getShowErrorMessage()
+    {
+        return $this->showErrorMessage;
+    }
+
+    /**
+     * Set Show ErrorMessage.
+     *
+     * @param bool $value
+     *
+     * @return DataValidation
+     */
+    public function setShowErrorMessage($value)
+    {
+        $this->showErrorMessage = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Error title.
+     *
+     * @return string
+     */
+    public function getErrorTitle()
+    {
+        return $this->errorTitle;
+    }
+
+    /**
+     * Set Error title.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setErrorTitle($value)
+    {
+        $this->errorTitle = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Error.
+     *
+     * @return string
+     */
+    public function getError()
+    {
+        return $this->error;
+    }
+
+    /**
+     * Set Error.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setError($value)
+    {
+        $this->error = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Prompt title.
+     *
+     * @return string
+     */
+    public function getPromptTitle()
+    {
+        return $this->promptTitle;
+    }
+
+    /**
+     * Set Prompt title.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setPromptTitle($value)
+    {
+        $this->promptTitle = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Prompt.
+     *
+     * @return string
+     */
+    public function getPrompt()
+    {
+        return $this->prompt;
+    }
+
+    /**
+     * Set Prompt.
+     *
+     * @param string $value
+     *
+     * @return DataValidation
+     */
+    public function setPrompt($value)
+    {
+        $this->prompt = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get hash code.
+     *
+     * @return string Hash code
+     */
+    public function getHashCode()
+    {
+        return md5(
+            $this->formula1 .
+            $this->formula2 .
+            $this->type .
+            $this->errorStyle .
+            $this->operator .
+            ($this->allowBlank ? 't' : 'f') .
+            ($this->showDropDown ? 't' : 'f') .
+            ($this->showInputMessage ? 't' : 'f') .
+            ($this->showErrorMessage ? 't' : 'f') .
+            $this->errorTitle .
+            $this->error .
+            $this->promptTitle .
+            $this->prompt .
+            __CLASS__
+        );
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/DataValidator.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+use PhpOffice\PhpSpreadsheet\Exception;
+
+/**
+ * Validate a cell value according to its validation rules.
+ */
+class DataValidator
+{
+    /**
+     * Does this cell contain valid value?
+     *
+     * @param Cell $cell Cell to check the value
+     *
+     * @return bool
+     */
+    public function isValid(Cell $cell)
+    {
+        if (!$cell->hasDataValidation()) {
+            return true;
+        }
+
+        $cellValue = $cell->getValue();
+        $dataValidation = $cell->getDataValidation();
+
+        if (!$dataValidation->getAllowBlank() && ($cellValue === null || $cellValue === '')) {
+            return false;
+        }
+
+        // TODO: write check on all cases
+        switch ($dataValidation->getType()) {
+            case DataValidation::TYPE_LIST:
+                return $this->isValueInList($cell);
+        }
+
+        return false;
+    }
+
+    /**
+     * Does this cell contain valid value, based on list?
+     *
+     * @param Cell $cell Cell to check the value
+     *
+     * @return bool
+     */
+    private function isValueInList(Cell $cell)
+    {
+        $cellValue = $cell->getValue();
+        $dataValidation = $cell->getDataValidation();
+
+        $formula1 = $dataValidation->getFormula1();
+        if (!empty($formula1)) {
+            // inline values list
+            if ($formula1[0] === '"') {
+                return in_array(strtolower($cellValue), explode(',', strtolower(trim($formula1, '"'))), true);
+            } elseif (strpos($formula1, ':') > 0) {
+                // values list cells
+                $matchFormula = '=MATCH(' . $cell->getCoordinate() . ', ' . $formula1 . ', 0)';
+                $calculation = Calculation::getInstance($cell->getWorksheet()->getParent());
+
+                try {
+                    $result = $calculation->calculateFormula($matchFormula, $cell->getCoordinate(), $cell);
+
+                    return $result !== Functions::NA();
+                } catch (Exception $ex) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/DefaultValueBinder.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use DateTimeInterface;
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+
+class DefaultValueBinder implements IValueBinder
+{
+    /**
+     * Bind value to a cell.
+     *
+     * @param Cell $cell Cell to bind value to
+     * @param mixed $value Value to bind in cell
+     *
+     * @throws \PhpOffice\PhpSpreadsheet\Exception
+     *
+     * @return bool
+     */
+    public function bindValue(Cell $cell, $value)
+    {
+        // sanitize UTF-8 strings
+        if (is_string($value)) {
+            $value = StringHelper::sanitizeUTF8($value);
+        } elseif (is_object($value)) {
+            // Handle any objects that might be injected
+            if ($value instanceof DateTimeInterface) {
+                $value = $value->format('Y-m-d H:i:s');
+            } elseif (!($value instanceof RichText)) {
+                $value = (string) $value;
+            }
+        }
+
+        // Set value explicit
+        $cell->setValueExplicit($value, static::dataTypeForValue($value));
+
+        // Done!
+        return true;
+    }
+
+    /**
+     * DataType for value.
+     *
+     * @param mixed $pValue
+     *
+     * @return string
+     */
+    public static function dataTypeForValue($pValue)
+    {
+        // Match the value against a few data types
+        if ($pValue === null) {
+            return DataType::TYPE_NULL;
+        } elseif ($pValue === '') {
+            return DataType::TYPE_STRING;
+        } elseif ($pValue instanceof RichText) {
+            return DataType::TYPE_INLINE;
+        } elseif (strpos($pValue, "=") === 0 && strlen($pValue) > 1) {
+            return DataType::TYPE_FORMULA;
+        } elseif (is_bool($pValue)) {
+            return DataType::TYPE_BOOL;
+        } elseif (is_float($pValue) || is_int($pValue)) {
+            return DataType::TYPE_NUMERIC;
+        } elseif (preg_match('/^[\+\-]?(\d+\\.?\d*|\d*\\.?\d+)([Ee][\-\+]?[0-2]?\d{1,3})?$/', $pValue)) {
+            $tValue = ltrim($pValue, '+-');
+            if (is_string($pValue) && $tValue[0] === '0' && strlen($tValue) > 1 && $tValue[1] !== '.') {
+                return DataType::TYPE_STRING;
+            } elseif ((strpos($pValue, '.') === false) && ($pValue > PHP_INT_MAX)) {
+                return DataType::TYPE_STRING;
+            }
+
+            return DataType::TYPE_NUMERIC;
+        } elseif (is_string($pValue)) {
+            $errorCodes = DataType::getErrorCodes();
+            if (isset($errorCodes[$pValue])) {
+                return DataType::TYPE_ERROR;
+            }
+        }
+
+        return DataType::TYPE_STRING;
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/Hyperlink.php

@@ -0,0 +1,113 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+class Hyperlink
+{
+    /**
+     * URL to link the cell to.
+     *
+     * @var string
+     */
+    private $url;
+
+    /**
+     * Tooltip to display on the hyperlink.
+     *
+     * @var string
+     */
+    private $tooltip;
+
+    /**
+     * Create a new Hyperlink.
+     *
+     * @param string $pUrl Url to link the cell to
+     * @param string $pTooltip Tooltip to display on the hyperlink
+     */
+    public function __construct($pUrl = '', $pTooltip = '')
+    {
+        // Initialise member variables
+        $this->url = $pUrl;
+        $this->tooltip = $pTooltip;
+    }
+
+    /**
+     * Get URL.
+     *
+     * @return string
+     */
+    public function getUrl()
+    {
+        return $this->url;
+    }
+
+    /**
+     * Set URL.
+     *
+     * @param string $value
+     *
+     * @return Hyperlink
+     */
+    public function setUrl($value)
+    {
+        $this->url = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get tooltip.
+     *
+     * @return string
+     */
+    public function getTooltip()
+    {
+        return $this->tooltip;
+    }
+
+    /**
+     * Set tooltip.
+     *
+     * @param string $value
+     *
+     * @return Hyperlink
+     */
+    public function setTooltip($value)
+    {
+        $this->tooltip = $value;
+
+        return $this;
+    }
+
+    /**
+     * Is this hyperlink internal? (to another worksheet).
+     *
+     * @return bool
+     */
+    public function isInternal()
+    {
+        return strpos($this->url, 'sheet://') !== false;
+    }
+
+    /**
+     * @return string
+     */
+    public function getTypeHyperlink()
+    {
+        return $this->isInternal() ? '' : 'External';
+    }
+
+    /**
+     * Get hash code.
+     *
+     * @return string Hash code
+     */
+    public function getHashCode()
+    {
+        return md5(
+            $this->url .
+            $this->tooltip .
+            __CLASS__
+        );
+    }
+}

PhpOffice/PhpSpreadsheet/Cell/IValueBinder.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+interface IValueBinder
+{
+    /**
+     * Bind value to a cell.
+     *
+     * @param Cell $cell Cell to bind value to
+     * @param mixed $value Value to bind in cell
+     *
+     * @return bool
+     */
+    public function bindValue(Cell $cell, $value);
+}

PhpOffice/PhpSpreadsheet/Cell/StringValueBinder.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Cell;
+
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+
+class StringValueBinder implements IValueBinder
+{
+    /**
+     * Bind value to a cell.
+     *
+     * @param Cell $cell Cell to bind value to
+     * @param mixed $value Value to bind in cell
+     *
+     * @throws \PhpOffice\PhpSpreadsheet\Exception
+     *
+     * @return bool
+     */
+    public function bindValue(Cell $cell, $value)
+    {
+        // sanitize UTF-8 strings
+        if (is_string($value)) {
+            $value = StringHelper::sanitizeUTF8($value);
+        }
+
+        $cell->setValueExplicit((string) $value, DataType::TYPE_STRING);
+
+        // Done!
+        return true;
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Axis.php

@@ -0,0 +1,557 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+/**
+ * Created by PhpStorm.
+ * User: Wiktor Trzonkowski
+ * Date: 6/17/14
+ * Time: 12:11 PM.
+ */
+class Axis extends Properties
+{
+    /**
+     * Axis Number.
+     *
+     * @var array of mixed
+     */
+    private $axisNumber = [
+        'format' => self::FORMAT_CODE_GENERAL,
+        'source_linked' => 1,
+    ];
+
+    /**
+     * Axis Options.
+     *
+     * @var array of mixed
+     */
+    private $axisOptions = [
+        'minimum' => null,
+        'maximum' => null,
+        'major_unit' => null,
+        'minor_unit' => null,
+        'orientation' => self::ORIENTATION_NORMAL,
+        'minor_tick_mark' => self::TICK_MARK_NONE,
+        'major_tick_mark' => self::TICK_MARK_NONE,
+        'axis_labels' => self::AXIS_LABELS_NEXT_TO,
+        'horizontal_crosses' => self::HORIZONTAL_CROSSES_AUTOZERO,
+        'horizontal_crosses_value' => null,
+    ];
+
+    /**
+     * Fill Properties.
+     *
+     * @var array of mixed
+     */
+    private $fillProperties = [
+        'type' => self::EXCEL_COLOR_TYPE_ARGB,
+        'value' => null,
+        'alpha' => 0,
+    ];
+
+    /**
+     * Line Properties.
+     *
+     * @var array of mixed
+     */
+    private $lineProperties = [
+        'type' => self::EXCEL_COLOR_TYPE_ARGB,
+        'value' => null,
+        'alpha' => 0,
+    ];
+
+    /**
+     * Line Style Properties.
+     *
+     * @var array of mixed
+     */
+    private $lineStyleProperties = [
+        'width' => '9525',
+        'compound' => self::LINE_STYLE_COMPOUND_SIMPLE,
+        'dash' => self::LINE_STYLE_DASH_SOLID,
+        'cap' => self::LINE_STYLE_CAP_FLAT,
+        'join' => self::LINE_STYLE_JOIN_BEVEL,
+        'arrow' => [
+            'head' => [
+                'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                'size' => self::LINE_STYLE_ARROW_SIZE_5,
+            ],
+            'end' => [
+                'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                'size' => self::LINE_STYLE_ARROW_SIZE_8,
+            ],
+        ],
+    ];
+
+    /**
+     * Shadow Properties.
+     *
+     * @var array of mixed
+     */
+    private $shadowProperties = [
+        'presets' => self::SHADOW_PRESETS_NOSHADOW,
+        'effect' => null,
+        'color' => [
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => 'black',
+            'alpha' => 40,
+        ],
+        'size' => [
+            'sx' => null,
+            'sy' => null,
+            'kx' => null,
+        ],
+        'blur' => null,
+        'direction' => null,
+        'distance' => null,
+        'algn' => null,
+        'rotWithShape' => null,
+    ];
+
+    /**
+     * Glow Properties.
+     *
+     * @var array of mixed
+     */
+    private $glowProperties = [
+        'size' => null,
+        'color' => [
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => 'black',
+            'alpha' => 40,
+        ],
+    ];
+
+    /**
+     * Soft Edge Properties.
+     *
+     * @var array of mixed
+     */
+    private $softEdges = [
+        'size' => null,
+    ];
+
+    /**
+     * Get Series Data Type.
+     *
+     * @param mixed $format_code
+     *
+     * @return string
+     */
+    public function setAxisNumberProperties($format_code)
+    {
+        $this->axisNumber['format'] = (string) $format_code;
+        $this->axisNumber['source_linked'] = 0;
+    }
+
+    /**
+     * Get Axis Number Format Data Type.
+     *
+     * @return string
+     */
+    public function getAxisNumberFormat()
+    {
+        return $this->axisNumber['format'];
+    }
+
+    /**
+     * Get Axis Number Source Linked.
+     *
+     * @return string
+     */
+    public function getAxisNumberSourceLinked()
+    {
+        return (string) $this->axisNumber['source_linked'];
+    }
+
+    /**
+     * Set Axis Options Properties.
+     *
+     * @param string $axis_labels
+     * @param string $horizontal_crosses_value
+     * @param string $horizontal_crosses
+     * @param string $axis_orientation
+     * @param string $major_tmt
+     * @param string $minor_tmt
+     * @param string $minimum
+     * @param string $maximum
+     * @param string $major_unit
+     * @param string $minor_unit
+     */
+    public function setAxisOptionsProperties($axis_labels, $horizontal_crosses_value = null, $horizontal_crosses = null, $axis_orientation = null, $major_tmt = null, $minor_tmt = null, $minimum = null, $maximum = null, $major_unit = null, $minor_unit = null)
+    {
+        $this->axisOptions['axis_labels'] = (string) $axis_labels;
+        ($horizontal_crosses_value !== null) ? $this->axisOptions['horizontal_crosses_value'] = (string) $horizontal_crosses_value : null;
+        ($horizontal_crosses !== null) ? $this->axisOptions['horizontal_crosses'] = (string) $horizontal_crosses : null;
+        ($axis_orientation !== null) ? $this->axisOptions['orientation'] = (string) $axis_orientation : null;
+        ($major_tmt !== null) ? $this->axisOptions['major_tick_mark'] = (string) $major_tmt : null;
+        ($minor_tmt !== null) ? $this->axisOptions['minor_tick_mark'] = (string) $minor_tmt : null;
+        ($minor_tmt !== null) ? $this->axisOptions['minor_tick_mark'] = (string) $minor_tmt : null;
+        ($minimum !== null) ? $this->axisOptions['minimum'] = (string) $minimum : null;
+        ($maximum !== null) ? $this->axisOptions['maximum'] = (string) $maximum : null;
+        ($major_unit !== null) ? $this->axisOptions['major_unit'] = (string) $major_unit : null;
+        ($minor_unit !== null) ? $this->axisOptions['minor_unit'] = (string) $minor_unit : null;
+    }
+
+    /**
+     * Get Axis Options Property.
+     *
+     * @param string $property
+     *
+     * @return string
+     */
+    public function getAxisOptionsProperty($property)
+    {
+        return $this->axisOptions[$property];
+    }
+
+    /**
+     * Set Axis Orientation Property.
+     *
+     * @param string $orientation
+     */
+    public function setAxisOrientation($orientation)
+    {
+        $this->axisOptions['orientation'] = (string) $orientation;
+    }
+
+    /**
+     * Set Fill Property.
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     */
+    public function setFillParameters($color, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_ARGB)
+    {
+        $this->fillProperties = $this->setColorProperties($color, $alpha, $type);
+    }
+
+    /**
+     * Set Line Property.
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     */
+    public function setLineParameters($color, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_ARGB)
+    {
+        $this->lineProperties = $this->setColorProperties($color, $alpha, $type);
+    }
+
+    /**
+     * Get Fill Property.
+     *
+     * @param string $property
+     *
+     * @return string
+     */
+    public function getFillProperty($property)
+    {
+        return $this->fillProperties[$property];
+    }
+
+    /**
+     * Get Line Property.
+     *
+     * @param string $property
+     *
+     * @return string
+     */
+    public function getLineProperty($property)
+    {
+        return $this->lineProperties[$property];
+    }
+
+    /**
+     * Set Line Style Properties.
+     *
+     * @param float $line_width
+     * @param string $compound_type
+     * @param string $dash_type
+     * @param string $cap_type
+     * @param string $join_type
+     * @param string $head_arrow_type
+     * @param string $head_arrow_size
+     * @param string $end_arrow_type
+     * @param string $end_arrow_size
+     */
+    public function setLineStyleProperties($line_width = null, $compound_type = null, $dash_type = null, $cap_type = null, $join_type = null, $head_arrow_type = null, $head_arrow_size = null, $end_arrow_type = null, $end_arrow_size = null)
+    {
+        ($line_width !== null) ? $this->lineStyleProperties['width'] = $this->getExcelPointsWidth((float) $line_width) : null;
+        ($compound_type !== null) ? $this->lineStyleProperties['compound'] = (string) $compound_type : null;
+        ($dash_type !== null) ? $this->lineStyleProperties['dash'] = (string) $dash_type : null;
+        ($cap_type !== null) ? $this->lineStyleProperties['cap'] = (string) $cap_type : null;
+        ($join_type !== null) ? $this->lineStyleProperties['join'] = (string) $join_type : null;
+        ($head_arrow_type !== null) ? $this->lineStyleProperties['arrow']['head']['type'] = (string) $head_arrow_type : null;
+        ($head_arrow_size !== null) ? $this->lineStyleProperties['arrow']['head']['size'] = (string) $head_arrow_size : null;
+        ($end_arrow_type !== null) ? $this->lineStyleProperties['arrow']['end']['type'] = (string) $end_arrow_type : null;
+        ($end_arrow_size !== null) ? $this->lineStyleProperties['arrow']['end']['size'] = (string) $end_arrow_size : null;
+    }
+
+    /**
+     * Get Line Style Property.
+     *
+     * @param array|string $elements
+     *
+     * @return string
+     */
+    public function getLineStyleProperty($elements)
+    {
+        return $this->getArrayElementsValue($this->lineStyleProperties, $elements);
+    }
+
+    /**
+     * Get Line Style Arrow Excel Width.
+     *
+     * @param string $arrow
+     *
+     * @return string
+     */
+    public function getLineStyleArrowWidth($arrow)
+    {
+        return $this->getLineStyleArrowSize($this->lineStyleProperties['arrow'][$arrow]['size'], 'w');
+    }
+
+    /**
+     * Get Line Style Arrow Excel Length.
+     *
+     * @param string $arrow
+     *
+     * @return string
+     */
+    public function getLineStyleArrowLength($arrow)
+    {
+        return $this->getLineStyleArrowSize($this->lineStyleProperties['arrow'][$arrow]['size'], 'len');
+    }
+
+    /**
+     * Set Shadow Properties.
+     *
+     * @param int $sh_presets
+     * @param string $sh_color_value
+     * @param string $sh_color_type
+     * @param string $sh_color_alpha
+     * @param float $sh_blur
+     * @param int $sh_angle
+     * @param float $sh_distance
+     */
+    public function setShadowProperties($sh_presets, $sh_color_value = null, $sh_color_type = null, $sh_color_alpha = null, $sh_blur = null, $sh_angle = null, $sh_distance = null)
+    {
+        $this->setShadowPresetsProperties((int) $sh_presets)
+            ->setShadowColor(
+                $sh_color_value === null ? $this->shadowProperties['color']['value'] : $sh_color_value,
+                $sh_color_alpha === null ? (int) $this->shadowProperties['color']['alpha'] : $sh_color_alpha,
+                $sh_color_type === null ? $this->shadowProperties['color']['type'] : $sh_color_type
+            )
+            ->setShadowBlur($sh_blur)
+            ->setShadowAngle($sh_angle)
+            ->setShadowDistance($sh_distance);
+    }
+
+    /**
+     * Set Shadow Color.
+     *
+     * @param int $shadow_presets
+     *
+     * @return Axis
+     */
+    private function setShadowPresetsProperties($shadow_presets)
+    {
+        $this->shadowProperties['presets'] = $shadow_presets;
+        $this->setShadowProperiesMapValues($this->getShadowPresetsMap($shadow_presets));
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Properties from Mapped Values.
+     *
+     * @param array $properties_map
+     * @param mixed &$reference
+     *
+     * @return Axis
+     */
+    private function setShadowProperiesMapValues(array $properties_map, &$reference = null)
+    {
+        $base_reference = $reference;
+        foreach ($properties_map as $property_key => $property_val) {
+            if (is_array($property_val)) {
+                if ($reference === null) {
+                    $reference = &$this->shadowProperties[$property_key];
+                } else {
+                    $reference = &$reference[$property_key];
+                }
+                $this->setShadowProperiesMapValues($property_val, $reference);
+            } else {
+                if ($base_reference === null) {
+                    $this->shadowProperties[$property_key] = $property_val;
+                } else {
+                    $reference[$property_key] = $property_val;
+                }
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Color.
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     *
+     * @return Axis
+     */
+    private function setShadowColor($color, $alpha, $type)
+    {
+        $this->shadowProperties['color'] = $this->setColorProperties($color, $alpha, $type);
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Blur.
+     *
+     * @param float $blur
+     *
+     * @return Axis
+     */
+    private function setShadowBlur($blur)
+    {
+        if ($blur !== null) {
+            $this->shadowProperties['blur'] = (string) $this->getExcelPointsWidth($blur);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Angle.
+     *
+     * @param int $angle
+     *
+     * @return Axis
+     */
+    private function setShadowAngle($angle)
+    {
+        if ($angle !== null) {
+            $this->shadowProperties['direction'] = (string) $this->getExcelPointsAngle($angle);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Distance.
+     *
+     * @param float $distance
+     *
+     * @return Axis
+     */
+    private function setShadowDistance($distance)
+    {
+        if ($distance !== null) {
+            $this->shadowProperties['distance'] = (string) $this->getExcelPointsWidth($distance);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get Shadow Property.
+     *
+     * @param string|string[] $elements
+     *
+     * @return null|array|int|string
+     */
+    public function getShadowProperty($elements)
+    {
+        return $this->getArrayElementsValue($this->shadowProperties, $elements);
+    }
+
+    /**
+     * Set Glow Properties.
+     *
+     * @param float $size
+     * @param string $color_value
+     * @param int $color_alpha
+     * @param string $color_type
+     */
+    public function setGlowProperties($size, $color_value = null, $color_alpha = null, $color_type = null)
+    {
+        $this->setGlowSize($size)
+            ->setGlowColor(
+                $color_value === null ? $this->glowProperties['color']['value'] : $color_value,
+                $color_alpha === null ? (int) $this->glowProperties['color']['alpha'] : $color_alpha,
+                $color_type === null ? $this->glowProperties['color']['type'] : $color_type
+            );
+    }
+
+    /**
+     * Get Glow Property.
+     *
+     * @param array|string $property
+     *
+     * @return string
+     */
+    public function getGlowProperty($property)
+    {
+        return $this->getArrayElementsValue($this->glowProperties, $property);
+    }
+
+    /**
+     * Set Glow Color.
+     *
+     * @param float $size
+     *
+     * @return Axis
+     */
+    private function setGlowSize($size)
+    {
+        if ($size !== null) {
+            $this->glowProperties['size'] = $this->getExcelPointsWidth($size);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Glow Color.
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     *
+     * @return Axis
+     */
+    private function setGlowColor($color, $alpha, $type)
+    {
+        $this->glowProperties['color'] = $this->setColorProperties($color, $alpha, $type);
+
+        return $this;
+    }
+
+    /**
+     * Set Soft Edges Size.
+     *
+     * @param float $size
+     */
+    public function setSoftEdges($size)
+    {
+        if ($size !== null) {
+            $softEdges['size'] = (string) $this->getExcelPointsWidth($size);
+        }
+    }
+
+    /**
+     * Get Soft Edges Size.
+     *
+     * @return string
+     */
+    public function getSoftEdgesSize()
+    {
+        return $this->softEdges['size'];
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Chart.php

@@ -0,0 +1,680 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+use PhpOffice\PhpSpreadsheet\Settings;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class Chart
+{
+    /**
+     * Chart Name.
+     *
+     * @var string
+     */
+    private $name = '';
+
+    /**
+     * Worksheet.
+     *
+     * @var Worksheet
+     */
+    private $worksheet;
+
+    /**
+     * Chart Title.
+     *
+     * @var Title
+     */
+    private $title;
+
+    /**
+     * Chart Legend.
+     *
+     * @var Legend
+     */
+    private $legend;
+
+    /**
+     * X-Axis Label.
+     *
+     * @var Title
+     */
+    private $xAxisLabel;
+
+    /**
+     * Y-Axis Label.
+     *
+     * @var Title
+     */
+    private $yAxisLabel;
+
+    /**
+     * Chart Plot Area.
+     *
+     * @var PlotArea
+     */
+    private $plotArea;
+
+    /**
+     * Plot Visible Only.
+     *
+     * @var bool
+     */
+    private $plotVisibleOnly = true;
+
+    /**
+     * Display Blanks as.
+     *
+     * @var string
+     */
+    private $displayBlanksAs = '0';
+
+    /**
+     * Chart Asix Y as.
+     *
+     * @var Axis
+     */
+    private $yAxis;
+
+    /**
+     * Chart Asix X as.
+     *
+     * @var Axis
+     */
+    private $xAxis;
+
+    /**
+     * Chart Major Gridlines as.
+     *
+     * @var GridLines
+     */
+    private $majorGridlines;
+
+    /**
+     * Chart Minor Gridlines as.
+     *
+     * @var GridLines
+     */
+    private $minorGridlines;
+
+    /**
+     * Top-Left Cell Position.
+     *
+     * @var string
+     */
+    private $topLeftCellRef = 'A1';
+
+    /**
+     * Top-Left X-Offset.
+     *
+     * @var int
+     */
+    private $topLeftXOffset = 0;
+
+    /**
+     * Top-Left Y-Offset.
+     *
+     * @var int
+     */
+    private $topLeftYOffset = 0;
+
+    /**
+     * Bottom-Right Cell Position.
+     *
+     * @var string
+     */
+    private $bottomRightCellRef = 'A1';
+
+    /**
+     * Bottom-Right X-Offset.
+     *
+     * @var int
+     */
+    private $bottomRightXOffset = 10;
+
+    /**
+     * Bottom-Right Y-Offset.
+     *
+     * @var int
+     */
+    private $bottomRightYOffset = 10;
+
+    /**
+     * Create a new Chart.
+     *
+     * @param mixed $name
+     * @param null|Title $title
+     * @param null|Legend $legend
+     * @param null|PlotArea $plotArea
+     * @param mixed $plotVisibleOnly
+     * @param mixed $displayBlanksAs
+     * @param null|Title $xAxisLabel
+     * @param null|Title $yAxisLabel
+     * @param null|Axis $xAxis
+     * @param null|Axis $yAxis
+     * @param null|GridLines $majorGridlines
+     * @param null|GridLines $minorGridlines
+     */
+    public function __construct($name, Title $title = null, Legend $legend = null, PlotArea $plotArea = null, $plotVisibleOnly = true, $displayBlanksAs = '0', Title $xAxisLabel = null, Title $yAxisLabel = null, Axis $xAxis = null, Axis $yAxis = null, GridLines $majorGridlines = null, GridLines $minorGridlines = null)
+    {
+        $this->name = $name;
+        $this->title = $title;
+        $this->legend = $legend;
+        $this->xAxisLabel = $xAxisLabel;
+        $this->yAxisLabel = $yAxisLabel;
+        $this->plotArea = $plotArea;
+        $this->plotVisibleOnly = $plotVisibleOnly;
+        $this->displayBlanksAs = $displayBlanksAs;
+        $this->xAxis = $xAxis;
+        $this->yAxis = $yAxis;
+        $this->majorGridlines = $majorGridlines;
+        $this->minorGridlines = $minorGridlines;
+    }
+
+    /**
+     * Get Name.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Get Worksheet.
+     *
+     * @return Worksheet
+     */
+    public function getWorksheet()
+    {
+        return $this->worksheet;
+    }
+
+    /**
+     * Set Worksheet.
+     *
+     * @param Worksheet $pValue
+     *
+     * @return Chart
+     */
+    public function setWorksheet(Worksheet $pValue = null)
+    {
+        $this->worksheet = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get Title.
+     *
+     * @return Title
+     */
+    public function getTitle()
+    {
+        return $this->title;
+    }
+
+    /**
+     * Set Title.
+     *
+     * @param Title $title
+     *
+     * @return Chart
+     */
+    public function setTitle(Title $title)
+    {
+        $this->title = $title;
+
+        return $this;
+    }
+
+    /**
+     * Get Legend.
+     *
+     * @return Legend
+     */
+    public function getLegend()
+    {
+        return $this->legend;
+    }
+
+    /**
+     * Set Legend.
+     *
+     * @param Legend $legend
+     *
+     * @return Chart
+     */
+    public function setLegend(Legend $legend)
+    {
+        $this->legend = $legend;
+
+        return $this;
+    }
+
+    /**
+     * Get X-Axis Label.
+     *
+     * @return Title
+     */
+    public function getXAxisLabel()
+    {
+        return $this->xAxisLabel;
+    }
+
+    /**
+     * Set X-Axis Label.
+     *
+     * @param Title $label
+     *
+     * @return Chart
+     */
+    public function setXAxisLabel(Title $label)
+    {
+        $this->xAxisLabel = $label;
+
+        return $this;
+    }
+
+    /**
+     * Get Y-Axis Label.
+     *
+     * @return Title
+     */
+    public function getYAxisLabel()
+    {
+        return $this->yAxisLabel;
+    }
+
+    /**
+     * Set Y-Axis Label.
+     *
+     * @param Title $label
+     *
+     * @return Chart
+     */
+    public function setYAxisLabel(Title $label)
+    {
+        $this->yAxisLabel = $label;
+
+        return $this;
+    }
+
+    /**
+     * Get Plot Area.
+     *
+     * @return PlotArea
+     */
+    public function getPlotArea()
+    {
+        return $this->plotArea;
+    }
+
+    /**
+     * Get Plot Visible Only.
+     *
+     * @return bool
+     */
+    public function getPlotVisibleOnly()
+    {
+        return $this->plotVisibleOnly;
+    }
+
+    /**
+     * Set Plot Visible Only.
+     *
+     * @param bool $plotVisibleOnly
+     *
+     * @return Chart
+     */
+    public function setPlotVisibleOnly($plotVisibleOnly)
+    {
+        $this->plotVisibleOnly = $plotVisibleOnly;
+
+        return $this;
+    }
+
+    /**
+     * Get Display Blanks as.
+     *
+     * @return string
+     */
+    public function getDisplayBlanksAs()
+    {
+        return $this->displayBlanksAs;
+    }
+
+    /**
+     * Set Display Blanks as.
+     *
+     * @param string $displayBlanksAs
+     *
+     * @return Chart
+     */
+    public function setDisplayBlanksAs($displayBlanksAs)
+    {
+        $this->displayBlanksAs = $displayBlanksAs;
+
+        return $this;
+    }
+
+    /**
+     * Get yAxis.
+     *
+     * @return Axis
+     */
+    public function getChartAxisY()
+    {
+        if ($this->yAxis !== null) {
+            return $this->yAxis;
+        }
+
+        return new Axis();
+    }
+
+    /**
+     * Get xAxis.
+     *
+     * @return Axis
+     */
+    public function getChartAxisX()
+    {
+        if ($this->xAxis !== null) {
+            return $this->xAxis;
+        }
+
+        return new Axis();
+    }
+
+    /**
+     * Get Major Gridlines.
+     *
+     * @return GridLines
+     */
+    public function getMajorGridlines()
+    {
+        if ($this->majorGridlines !== null) {
+            return $this->majorGridlines;
+        }
+
+        return new GridLines();
+    }
+
+    /**
+     * Get Minor Gridlines.
+     *
+     * @return GridLines
+     */
+    public function getMinorGridlines()
+    {
+        if ($this->minorGridlines !== null) {
+            return $this->minorGridlines;
+        }
+
+        return new GridLines();
+    }
+
+    /**
+     * Set the Top Left position for the chart.
+     *
+     * @param string $cell
+     * @param int $xOffset
+     * @param int $yOffset
+     *
+     * @return Chart
+     */
+    public function setTopLeftPosition($cell, $xOffset = null, $yOffset = null)
+    {
+        $this->topLeftCellRef = $cell;
+        if ($xOffset !== null) {
+            $this->setTopLeftXOffset($xOffset);
+        }
+        if ($yOffset !== null) {
+            $this->setTopLeftYOffset($yOffset);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the top left position of the chart.
+     *
+     * @return array an associative array containing the cell address, X-Offset and Y-Offset from the top left of that cell
+     */
+    public function getTopLeftPosition()
+    {
+        return [
+            'cell' => $this->topLeftCellRef,
+            'xOffset' => $this->topLeftXOffset,
+            'yOffset' => $this->topLeftYOffset,
+        ];
+    }
+
+    /**
+     * Get the cell address where the top left of the chart is fixed.
+     *
+     * @return string
+     */
+    public function getTopLeftCell()
+    {
+        return $this->topLeftCellRef;
+    }
+
+    /**
+     * Set the Top Left cell position for the chart.
+     *
+     * @param string $cell
+     *
+     * @return Chart
+     */
+    public function setTopLeftCell($cell)
+    {
+        $this->topLeftCellRef = $cell;
+
+        return $this;
+    }
+
+    /**
+     * Set the offset position within the Top Left cell for the chart.
+     *
+     * @param int $xOffset
+     * @param int $yOffset
+     *
+     * @return Chart
+     */
+    public function setTopLeftOffset($xOffset, $yOffset)
+    {
+        if ($xOffset !== null) {
+            $this->setTopLeftXOffset($xOffset);
+        }
+
+        if ($yOffset !== null) {
+            $this->setTopLeftYOffset($yOffset);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the offset position within the Top Left cell for the chart.
+     *
+     * @return int[]
+     */
+    public function getTopLeftOffset()
+    {
+        return [
+            'X' => $this->topLeftXOffset,
+            'Y' => $this->topLeftYOffset,
+        ];
+    }
+
+    public function setTopLeftXOffset($xOffset)
+    {
+        $this->topLeftXOffset = $xOffset;
+
+        return $this;
+    }
+
+    public function getTopLeftXOffset()
+    {
+        return $this->topLeftXOffset;
+    }
+
+    public function setTopLeftYOffset($yOffset)
+    {
+        $this->topLeftYOffset = $yOffset;
+
+        return $this;
+    }
+
+    public function getTopLeftYOffset()
+    {
+        return $this->topLeftYOffset;
+    }
+
+    /**
+     * Set the Bottom Right position of the chart.
+     *
+     * @param string $cell
+     * @param int $xOffset
+     * @param int $yOffset
+     *
+     * @return Chart
+     */
+    public function setBottomRightPosition($cell, $xOffset = null, $yOffset = null)
+    {
+        $this->bottomRightCellRef = $cell;
+        if ($xOffset !== null) {
+            $this->setBottomRightXOffset($xOffset);
+        }
+        if ($yOffset !== null) {
+            $this->setBottomRightYOffset($yOffset);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the bottom right position of the chart.
+     *
+     * @return array an associative array containing the cell address, X-Offset and Y-Offset from the top left of that cell
+     */
+    public function getBottomRightPosition()
+    {
+        return [
+            'cell' => $this->bottomRightCellRef,
+            'xOffset' => $this->bottomRightXOffset,
+            'yOffset' => $this->bottomRightYOffset,
+        ];
+    }
+
+    public function setBottomRightCell($cell)
+    {
+        $this->bottomRightCellRef = $cell;
+
+        return $this;
+    }
+
+    /**
+     * Get the cell address where the bottom right of the chart is fixed.
+     *
+     * @return string
+     */
+    public function getBottomRightCell()
+    {
+        return $this->bottomRightCellRef;
+    }
+
+    /**
+     * Set the offset position within the Bottom Right cell for the chart.
+     *
+     * @param int $xOffset
+     * @param int $yOffset
+     *
+     * @return Chart
+     */
+    public function setBottomRightOffset($xOffset, $yOffset)
+    {
+        if ($xOffset !== null) {
+            $this->setBottomRightXOffset($xOffset);
+        }
+
+        if ($yOffset !== null) {
+            $this->setBottomRightYOffset($yOffset);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the offset position within the Bottom Right cell for the chart.
+     *
+     * @return int[]
+     */
+    public function getBottomRightOffset()
+    {
+        return [
+            'X' => $this->bottomRightXOffset,
+            'Y' => $this->bottomRightYOffset,
+        ];
+    }
+
+    public function setBottomRightXOffset($xOffset)
+    {
+        $this->bottomRightXOffset = $xOffset;
+
+        return $this;
+    }
+
+    public function getBottomRightXOffset()
+    {
+        return $this->bottomRightXOffset;
+    }
+
+    public function setBottomRightYOffset($yOffset)
+    {
+        $this->bottomRightYOffset = $yOffset;
+
+        return $this;
+    }
+
+    public function getBottomRightYOffset()
+    {
+        return $this->bottomRightYOffset;
+    }
+
+    public function refresh()
+    {
+        if ($this->worksheet !== null) {
+            $this->plotArea->refresh($this->worksheet);
+        }
+    }
+
+    /**
+     * Render the chart to given file (or stream).
+     *
+     * @param string $outputDestination Name of the file render to
+     *
+     * @return bool true on success
+     */
+    public function render($outputDestination = null)
+    {
+        if ($outputDestination == 'php://output') {
+            $outputDestination = null;
+        }
+
+        $libraryName = Settings::getChartRenderer();
+        if ($libraryName === null) {
+            return false;
+        }
+
+        // Ensure that data series values are up-to-date before we render
+        $this->refresh();
+
+        $renderer = new $libraryName($this);
+
+        return $renderer->render($outputDestination);
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/DataSeries.php

@@ -0,0 +1,390 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class DataSeries
+{
+    const TYPE_BARCHART = 'barChart';
+    const TYPE_BARCHART_3D = 'bar3DChart';
+    const TYPE_LINECHART = 'lineChart';
+    const TYPE_LINECHART_3D = 'line3DChart';
+    const TYPE_AREACHART = 'areaChart';
+    const TYPE_AREACHART_3D = 'area3DChart';
+    const TYPE_PIECHART = 'pieChart';
+    const TYPE_PIECHART_3D = 'pie3DChart';
+    const TYPE_DOUGHNUTCHART = 'doughnutChart';
+    const TYPE_DONUTCHART = self::TYPE_DOUGHNUTCHART; // Synonym
+    const TYPE_SCATTERCHART = 'scatterChart';
+    const TYPE_SURFACECHART = 'surfaceChart';
+    const TYPE_SURFACECHART_3D = 'surface3DChart';
+    const TYPE_RADARCHART = 'radarChart';
+    const TYPE_BUBBLECHART = 'bubbleChart';
+    const TYPE_STOCKCHART = 'stockChart';
+    const TYPE_CANDLECHART = self::TYPE_STOCKCHART; // Synonym
+
+    const GROUPING_CLUSTERED = 'clustered';
+    const GROUPING_STACKED = 'stacked';
+    const GROUPING_PERCENT_STACKED = 'percentStacked';
+    const GROUPING_STANDARD = 'standard';
+
+    const DIRECTION_BAR = 'bar';
+    const DIRECTION_HORIZONTAL = self::DIRECTION_BAR;
+    const DIRECTION_COL = 'col';
+    const DIRECTION_COLUMN = self::DIRECTION_COL;
+    const DIRECTION_VERTICAL = self::DIRECTION_COL;
+
+    const STYLE_LINEMARKER = 'lineMarker';
+    const STYLE_SMOOTHMARKER = 'smoothMarker';
+    const STYLE_MARKER = 'marker';
+    const STYLE_FILLED = 'filled';
+
+    /**
+     * Series Plot Type.
+     *
+     * @var string
+     */
+    private $plotType;
+
+    /**
+     * Plot Grouping Type.
+     *
+     * @var string
+     */
+    private $plotGrouping;
+
+    /**
+     * Plot Direction.
+     *
+     * @var string
+     */
+    private $plotDirection;
+
+    /**
+     * Plot Style.
+     *
+     * @var null|string
+     */
+    private $plotStyle;
+
+    /**
+     * Order of plots in Series.
+     *
+     * @var array of integer
+     */
+    private $plotOrder = [];
+
+    /**
+     * Plot Label.
+     *
+     * @var array of DataSeriesValues
+     */
+    private $plotLabel = [];
+
+    /**
+     * Plot Category.
+     *
+     * @var array of DataSeriesValues
+     */
+    private $plotCategory = [];
+
+    /**
+     * Smooth Line.
+     *
+     * @var bool
+     */
+    private $smoothLine;
+
+    /**
+     * Plot Values.
+     *
+     * @var array of DataSeriesValues
+     */
+    private $plotValues = [];
+
+    /**
+     * Create a new DataSeries.
+     *
+     * @param null|mixed $plotType
+     * @param null|mixed $plotGrouping
+     * @param int[] $plotOrder
+     * @param DataSeriesValues[] $plotLabel
+     * @param DataSeriesValues[] $plotCategory
+     * @param DataSeriesValues[] $plotValues
+     * @param null|string $plotDirection
+     * @param bool $smoothLine
+     * @param null|string $plotStyle
+     */
+    public function __construct($plotType = null, $plotGrouping = null, array $plotOrder = [], array $plotLabel = [], array $plotCategory = [], array $plotValues = [], $plotDirection = null, $smoothLine = false, $plotStyle = null)
+    {
+        $this->plotType = $plotType;
+        $this->plotGrouping = $plotGrouping;
+        $this->plotOrder = $plotOrder;
+        $keys = array_keys($plotValues);
+        $this->plotValues = $plotValues;
+        if ((count($plotLabel) == 0) || ($plotLabel[$keys[0]] === null)) {
+            $plotLabel[$keys[0]] = new DataSeriesValues();
+        }
+        $this->plotLabel = $plotLabel;
+
+        if ((count($plotCategory) == 0) || ($plotCategory[$keys[0]] === null)) {
+            $plotCategory[$keys[0]] = new DataSeriesValues();
+        }
+        $this->plotCategory = $plotCategory;
+
+        $this->smoothLine = $smoothLine;
+        $this->plotStyle = $plotStyle;
+
+        if ($plotDirection === null) {
+            $plotDirection = self::DIRECTION_COL;
+        }
+        $this->plotDirection = $plotDirection;
+    }
+
+    /**
+     * Get Plot Type.
+     *
+     * @return string
+     */
+    public function getPlotType()
+    {
+        return $this->plotType;
+    }
+
+    /**
+     * Set Plot Type.
+     *
+     * @param string $plotType
+     *
+     * @return DataSeries
+     */
+    public function setPlotType($plotType)
+    {
+        $this->plotType = $plotType;
+
+        return $this;
+    }
+
+    /**
+     * Get Plot Grouping Type.
+     *
+     * @return string
+     */
+    public function getPlotGrouping()
+    {
+        return $this->plotGrouping;
+    }
+
+    /**
+     * Set Plot Grouping Type.
+     *
+     * @param string $groupingType
+     *
+     * @return DataSeries
+     */
+    public function setPlotGrouping($groupingType)
+    {
+        $this->plotGrouping = $groupingType;
+
+        return $this;
+    }
+
+    /**
+     * Get Plot Direction.
+     *
+     * @return string
+     */
+    public function getPlotDirection()
+    {
+        return $this->plotDirection;
+    }
+
+    /**
+     * Set Plot Direction.
+     *
+     * @param string $plotDirection
+     *
+     * @return DataSeries
+     */
+    public function setPlotDirection($plotDirection)
+    {
+        $this->plotDirection = $plotDirection;
+
+        return $this;
+    }
+
+    /**
+     * Get Plot Order.
+     *
+     * @return int[]
+     */
+    public function getPlotOrder()
+    {
+        return $this->plotOrder;
+    }
+
+    /**
+     * Get Plot Labels.
+     *
+     * @return array of DataSeriesValues
+     */
+    public function getPlotLabels()
+    {
+        return $this->plotLabel;
+    }
+
+    /**
+     * Get Plot Label by Index.
+     *
+     * @param mixed $index
+     *
+     * @return DataSeriesValues
+     */
+    public function getPlotLabelByIndex($index)
+    {
+        $keys = array_keys($this->plotLabel);
+        if (in_array($index, $keys)) {
+            return $this->plotLabel[$index];
+        } elseif (isset($keys[$index])) {
+            return $this->plotLabel[$keys[$index]];
+        }
+
+        return false;
+    }
+
+    /**
+     * Get Plot Categories.
+     *
+     * @return array of DataSeriesValues
+     */
+    public function getPlotCategories()
+    {
+        return $this->plotCategory;
+    }
+
+    /**
+     * Get Plot Category by Index.
+     *
+     * @param mixed $index
+     *
+     * @return DataSeriesValues
+     */
+    public function getPlotCategoryByIndex($index)
+    {
+        $keys = array_keys($this->plotCategory);
+        if (in_array($index, $keys)) {
+            return $this->plotCategory[$index];
+        } elseif (isset($keys[$index])) {
+            return $this->plotCategory[$keys[$index]];
+        }
+
+        return false;
+    }
+
+    /**
+     * Get Plot Style.
+     *
+     * @return null|string
+     */
+    public function getPlotStyle()
+    {
+        return $this->plotStyle;
+    }
+
+    /**
+     * Set Plot Style.
+     *
+     * @param null|string $plotStyle
+     *
+     * @return DataSeries
+     */
+    public function setPlotStyle($plotStyle)
+    {
+        $this->plotStyle = $plotStyle;
+
+        return $this;
+    }
+
+    /**
+     * Get Plot Values.
+     *
+     * @return array of DataSeriesValues
+     */
+    public function getPlotValues()
+    {
+        return $this->plotValues;
+    }
+
+    /**
+     * Get Plot Values by Index.
+     *
+     * @param mixed $index
+     *
+     * @return DataSeriesValues
+     */
+    public function getPlotValuesByIndex($index)
+    {
+        $keys = array_keys($this->plotValues);
+        if (in_array($index, $keys)) {
+            return $this->plotValues[$index];
+        } elseif (isset($keys[$index])) {
+            return $this->plotValues[$keys[$index]];
+        }
+
+        return false;
+    }
+
+    /**
+     * Get Number of Plot Series.
+     *
+     * @return int
+     */
+    public function getPlotSeriesCount()
+    {
+        return count($this->plotValues);
+    }
+
+    /**
+     * Get Smooth Line.
+     *
+     * @return bool
+     */
+    public function getSmoothLine()
+    {
+        return $this->smoothLine;
+    }
+
+    /**
+     * Set Smooth Line.
+     *
+     * @param bool $smoothLine
+     *
+     * @return DataSeries
+     */
+    public function setSmoothLine($smoothLine)
+    {
+        $this->smoothLine = $smoothLine;
+
+        return $this;
+    }
+
+    public function refresh(Worksheet $worksheet)
+    {
+        foreach ($this->plotValues as $plotValues) {
+            if ($plotValues !== null) {
+                $plotValues->refresh($worksheet, true);
+            }
+        }
+        foreach ($this->plotLabel as $plotValues) {
+            if ($plotValues !== null) {
+                $plotValues->refresh($worksheet, true);
+            }
+        }
+        foreach ($this->plotCategory as $plotValues) {
+            if ($plotValues !== null) {
+                $plotValues->refresh($worksheet, false);
+            }
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/DataSeriesValues.php

@@ -0,0 +1,401 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class DataSeriesValues
+{
+    const DATASERIES_TYPE_STRING = 'String';
+    const DATASERIES_TYPE_NUMBER = 'Number';
+
+    private static $dataTypeValues = [
+        self::DATASERIES_TYPE_STRING,
+        self::DATASERIES_TYPE_NUMBER,
+    ];
+
+    /**
+     * Series Data Type.
+     *
+     * @var string
+     */
+    private $dataType;
+
+    /**
+     * Series Data Source.
+     *
+     * @var string
+     */
+    private $dataSource;
+
+    /**
+     * Format Code.
+     *
+     * @var string
+     */
+    private $formatCode;
+
+    /**
+     * Series Point Marker.
+     *
+     * @var string
+     */
+    private $pointMarker;
+
+    /**
+     * Point Count (The number of datapoints in the dataseries).
+     *
+     * @var int
+     */
+    private $pointCount = 0;
+
+    /**
+     * Data Values.
+     *
+     * @var array of mixed
+     */
+    private $dataValues = [];
+
+    /**
+     * Fill color (can be array with colors if dataseries have custom colors).
+     *
+     * @var string|string[]
+     */
+    private $fillColor;
+
+    /**
+     * Line Width.
+     *
+     * @var int
+     */
+    private $lineWidth = 12700;
+
+    /**
+     * Create a new DataSeriesValues object.
+     *
+     * @param string $dataType
+     * @param string $dataSource
+     * @param null|mixed $formatCode
+     * @param int $pointCount
+     * @param mixed $dataValues
+     * @param null|mixed $marker
+     * @param null|string|string[] $fillColor
+     */
+    public function __construct($dataType = self::DATASERIES_TYPE_NUMBER, $dataSource = null, $formatCode = null, $pointCount = 0, $dataValues = [], $marker = null, $fillColor = null)
+    {
+        $this->setDataType($dataType);
+        $this->dataSource = $dataSource;
+        $this->formatCode = $formatCode;
+        $this->pointCount = $pointCount;
+        $this->dataValues = $dataValues;
+        $this->pointMarker = $marker;
+        $this->fillColor = $fillColor;
+    }
+
+    /**
+     * Get Series Data Type.
+     *
+     * @return string
+     */
+    public function getDataType()
+    {
+        return $this->dataType;
+    }
+
+    /**
+     * Set Series Data Type.
+     *
+     * @param string $dataType Datatype of this data series
+     *                                Typical values are:
+     *                                    DataSeriesValues::DATASERIES_TYPE_STRING
+     *                                        Normally used for axis point values
+     *                                    DataSeriesValues::DATASERIES_TYPE_NUMBER
+     *                                        Normally used for chart data values
+     *
+     * @throws Exception
+     *
+     * @return DataSeriesValues
+     */
+    public function setDataType($dataType)
+    {
+        if (!in_array($dataType, self::$dataTypeValues)) {
+            throw new Exception('Invalid datatype for chart data series values');
+        }
+        $this->dataType = $dataType;
+
+        return $this;
+    }
+
+    /**
+     * Get Series Data Source (formula).
+     *
+     * @return string
+     */
+    public function getDataSource()
+    {
+        return $this->dataSource;
+    }
+
+    /**
+     * Set Series Data Source (formula).
+     *
+     * @param string $dataSource
+     *
+     * @return DataSeriesValues
+     */
+    public function setDataSource($dataSource)
+    {
+        $this->dataSource = $dataSource;
+
+        return $this;
+    }
+
+    /**
+     * Get Point Marker.
+     *
+     * @return string
+     */
+    public function getPointMarker()
+    {
+        return $this->pointMarker;
+    }
+
+    /**
+     * Set Point Marker.
+     *
+     * @param string $marker
+     *
+     * @return DataSeriesValues
+     */
+    public function setPointMarker($marker)
+    {
+        $this->pointMarker = $marker;
+
+        return $this;
+    }
+
+    /**
+     * Get Series Format Code.
+     *
+     * @return string
+     */
+    public function getFormatCode()
+    {
+        return $this->formatCode;
+    }
+
+    /**
+     * Set Series Format Code.
+     *
+     * @param string $formatCode
+     *
+     * @return DataSeriesValues
+     */
+    public function setFormatCode($formatCode)
+    {
+        $this->formatCode = $formatCode;
+
+        return $this;
+    }
+
+    /**
+     * Get Series Point Count.
+     *
+     * @return int
+     */
+    public function getPointCount()
+    {
+        return $this->pointCount;
+    }
+
+    /**
+     * Get fill color.
+     *
+     * @return string|string[] HEX color or array with HEX colors
+     */
+    public function getFillColor()
+    {
+        return $this->fillColor;
+    }
+
+    /**
+     * Set fill color for series.
+     *
+     * @param string|string[] $color HEX color or array with HEX colors
+     *
+     * @return   DataSeriesValues
+     */
+    public function setFillColor($color)
+    {
+        if (is_array($color)) {
+            foreach ($color as $colorValue) {
+                $this->validateColor($colorValue);
+            }
+        } else {
+            $this->validateColor($color);
+        }
+        $this->fillColor = $color;
+
+        return $this;
+    }
+
+    /**
+     * Method for validating hex color.
+     *
+     * @param string $color value for color
+     *
+     * @throws \Exception thrown if color is invalid
+     *
+     * @return bool true if validation was successful
+     */
+    private function validateColor($color)
+    {
+        if (!preg_match('/^[a-f0-9]{6}$/i', $color)) {
+            throw new Exception(sprintf('Invalid hex color for chart series (color: "%s")', $color));
+        }
+
+        return true;
+    }
+
+    /**
+     * Get line width for series.
+     *
+     * @return int
+     */
+    public function getLineWidth()
+    {
+        return $this->lineWidth;
+    }
+
+    /**
+     * Set line width for the series.
+     *
+     * @param int $width
+     *
+     * @return DataSeriesValues
+     */
+    public function setLineWidth($width)
+    {
+        $minWidth = 12700;
+        $this->lineWidth = max($minWidth, $width);
+
+        return $this;
+    }
+
+    /**
+     * Identify if the Data Series is a multi-level or a simple series.
+     *
+     * @return null|bool
+     */
+    public function isMultiLevelSeries()
+    {
+        if (count($this->dataValues) > 0) {
+            return is_array(array_values($this->dataValues)[0]);
+        }
+
+        return null;
+    }
+
+    /**
+     * Return the level count of a multi-level Data Series.
+     *
+     * @return int
+     */
+    public function multiLevelCount()
+    {
+        $levelCount = 0;
+        foreach ($this->dataValues as $dataValueSet) {
+            $levelCount = max($levelCount, count($dataValueSet));
+        }
+
+        return $levelCount;
+    }
+
+    /**
+     * Get Series Data Values.
+     *
+     * @return array of mixed
+     */
+    public function getDataValues()
+    {
+        return $this->dataValues;
+    }
+
+    /**
+     * Get the first Series Data value.
+     *
+     * @return mixed
+     */
+    public function getDataValue()
+    {
+        $count = count($this->dataValues);
+        if ($count == 0) {
+            return null;
+        } elseif ($count == 1) {
+            return $this->dataValues[0];
+        }
+
+        return $this->dataValues;
+    }
+
+    /**
+     * Set Series Data Values.
+     *
+     * @param array $dataValues
+     *
+     * @return DataSeriesValues
+     */
+    public function setDataValues($dataValues)
+    {
+        $this->dataValues = Functions::flattenArray($dataValues);
+        $this->pointCount = count($dataValues);
+
+        return $this;
+    }
+
+    public function refresh(Worksheet $worksheet, $flatten = true)
+    {
+        if ($this->dataSource !== null) {
+            $calcEngine = Calculation::getInstance($worksheet->getParent());
+            $newDataValues = Calculation::unwrapResult(
+                $calcEngine->_calculateFormulaValue(
+                    '=' . $this->dataSource,
+                    null,
+                    $worksheet->getCell('A1')
+                )
+            );
+            if ($flatten) {
+                $this->dataValues = Functions::flattenArray($newDataValues);
+                foreach ($this->dataValues as &$dataValue) {
+                    if ((!empty($dataValue)) && ($dataValue[0] == '#')) {
+                        $dataValue = 0.0;
+                    }
+                }
+                unset($dataValue);
+            } else {
+                [$worksheet, $cellRange] = Worksheet::extractSheetTitle($this->dataSource, true);
+                $dimensions = Coordinate::rangeDimension(str_replace('$', '', $cellRange));
+                if (($dimensions[0] == 1) || ($dimensions[1] == 1)) {
+                    $this->dataValues = Functions::flattenArray($newDataValues);
+                } else {
+                    $newArray = array_values(array_shift($newDataValues));
+                    foreach ($newArray as $i => $newDataSet) {
+                        $newArray[$i] = [$newDataSet];
+                    }
+
+                    foreach ($newDataValues as $newDataSet) {
+                        $i = 0;
+                        foreach ($newDataSet as $newDataVal) {
+                            array_unshift($newArray[$i++], $newDataVal);
+                        }
+                    }
+                    $this->dataValues = $newArray;
+                }
+            }
+            $this->pointCount = count($this->dataValues);
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Exception.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
+
+class Exception extends PhpSpreadsheetException
+{
+}

PhpOffice/PhpSpreadsheet/Chart/GridLines.php

@@ -0,0 +1,455 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+/**
+ * Created by PhpStorm.
+ * User: Wiktor Trzonkowski
+ * Date: 7/2/14
+ * Time: 2:36 PM.
+ */
+class GridLines extends Properties
+{
+    /**
+     * Properties of Class:
+     * Object State (State for Minor Tick Mark) @var bool
+     * Line Properties @var  array of mixed
+     * Shadow Properties @var  array of mixed
+     * Glow Properties @var  array of mixed
+     * Soft Properties @var  array of mixed.
+     */
+    private $objectState = false;
+
+    private $lineProperties = [
+        'color' => [
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => null,
+            'alpha' => 0,
+        ],
+        'style' => [
+            'width' => '9525',
+            'compound' => self::LINE_STYLE_COMPOUND_SIMPLE,
+            'dash' => self::LINE_STYLE_DASH_SOLID,
+            'cap' => self::LINE_STYLE_CAP_FLAT,
+            'join' => self::LINE_STYLE_JOIN_BEVEL,
+            'arrow' => [
+                'head' => [
+                    'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                    'size' => self::LINE_STYLE_ARROW_SIZE_5,
+                ],
+                'end' => [
+                    'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                    'size' => self::LINE_STYLE_ARROW_SIZE_8,
+                ],
+            ],
+        ],
+    ];
+
+    private $shadowProperties = [
+        'presets' => self::SHADOW_PRESETS_NOSHADOW,
+        'effect' => null,
+        'color' => [
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => 'black',
+            'alpha' => 85,
+        ],
+        'size' => [
+            'sx' => null,
+            'sy' => null,
+            'kx' => null,
+        ],
+        'blur' => null,
+        'direction' => null,
+        'distance' => null,
+        'algn' => null,
+        'rotWithShape' => null,
+    ];
+
+    private $glowProperties = [
+        'size' => null,
+        'color' => [
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => 'black',
+            'alpha' => 40,
+        ],
+    ];
+
+    private $softEdges = [
+        'size' => null,
+    ];
+
+    /**
+     * Get Object State.
+     *
+     * @return bool
+     */
+    public function getObjectState()
+    {
+        return $this->objectState;
+    }
+
+    /**
+     * Change Object State to True.
+     *
+     * @return GridLines
+     */
+    private function activateObject()
+    {
+        $this->objectState = true;
+
+        return $this;
+    }
+
+    /**
+     * Set Line Color Properties.
+     *
+     * @param string $value
+     * @param int $alpha
+     * @param string $type
+     */
+    public function setLineColorProperties($value, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_STANDARD)
+    {
+        $this->activateObject()
+            ->lineProperties['color'] = $this->setColorProperties(
+                $value,
+                $alpha,
+                $type
+            );
+    }
+
+    /**
+     * Set Line Color Properties.
+     *
+     * @param float $line_width
+     * @param string $compound_type
+     * @param string $dash_type
+     * @param string $cap_type
+     * @param string $join_type
+     * @param string $head_arrow_type
+     * @param string $head_arrow_size
+     * @param string $end_arrow_type
+     * @param string $end_arrow_size
+     */
+    public function setLineStyleProperties($line_width = null, $compound_type = null, $dash_type = null, $cap_type = null, $join_type = null, $head_arrow_type = null, $head_arrow_size = null, $end_arrow_type = null, $end_arrow_size = null)
+    {
+        $this->activateObject();
+        ($line_width !== null)
+                ? $this->lineProperties['style']['width'] = $this->getExcelPointsWidth((float) $line_width)
+                : null;
+        ($compound_type !== null)
+                ? $this->lineProperties['style']['compound'] = (string) $compound_type
+                : null;
+        ($dash_type !== null)
+                ? $this->lineProperties['style']['dash'] = (string) $dash_type
+                : null;
+        ($cap_type !== null)
+                ? $this->lineProperties['style']['cap'] = (string) $cap_type
+                : null;
+        ($join_type !== null)
+                ? $this->lineProperties['style']['join'] = (string) $join_type
+                : null;
+        ($head_arrow_type !== null)
+                ? $this->lineProperties['style']['arrow']['head']['type'] = (string) $head_arrow_type
+                : null;
+        ($head_arrow_size !== null)
+                ? $this->lineProperties['style']['arrow']['head']['size'] = (string) $head_arrow_size
+                : null;
+        ($end_arrow_type !== null)
+                ? $this->lineProperties['style']['arrow']['end']['type'] = (string) $end_arrow_type
+                : null;
+        ($end_arrow_size !== null)
+                ? $this->lineProperties['style']['arrow']['end']['size'] = (string) $end_arrow_size
+                : null;
+    }
+
+    /**
+     * Get Line Color Property.
+     *
+     * @param string $parameter
+     *
+     * @return string
+     */
+    public function getLineColorProperty($parameter)
+    {
+        return $this->lineProperties['color'][$parameter];
+    }
+
+    /**
+     * Get Line Style Property.
+     *
+     * @param array|string $elements
+     *
+     * @return string
+     */
+    public function getLineStyleProperty($elements)
+    {
+        return $this->getArrayElementsValue($this->lineProperties['style'], $elements);
+    }
+
+    /**
+     * Set Glow Properties.
+     *
+     * @param float $size
+     * @param string $color_value
+     * @param int $color_alpha
+     * @param string $color_type
+     */
+    public function setGlowProperties($size, $color_value = null, $color_alpha = null, $color_type = null)
+    {
+        $this
+            ->activateObject()
+            ->setGlowSize($size)
+            ->setGlowColor($color_value, $color_alpha, $color_type);
+    }
+
+    /**
+     * Get Glow Color Property.
+     *
+     * @param string $property
+     *
+     * @return string
+     */
+    public function getGlowColor($property)
+    {
+        return $this->glowProperties['color'][$property];
+    }
+
+    /**
+     * Get Glow Size.
+     *
+     * @return string
+     */
+    public function getGlowSize()
+    {
+        return $this->glowProperties['size'];
+    }
+
+    /**
+     * Set Glow Size.
+     *
+     * @param float $size
+     *
+     * @return GridLines
+     */
+    private function setGlowSize($size)
+    {
+        $this->glowProperties['size'] = $this->getExcelPointsWidth((float) $size);
+
+        return $this;
+    }
+
+    /**
+     * Set Glow Color.
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     *
+     * @return GridLines
+     */
+    private function setGlowColor($color, $alpha, $type)
+    {
+        if ($color !== null) {
+            $this->glowProperties['color']['value'] = (string) $color;
+        }
+        if ($alpha !== null) {
+            $this->glowProperties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
+        }
+        if ($type !== null) {
+            $this->glowProperties['color']['type'] = (string) $type;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get Line Style Arrow Parameters.
+     *
+     * @param string $arrow_selector
+     * @param string $property_selector
+     *
+     * @return string
+     */
+    public function getLineStyleArrowParameters($arrow_selector, $property_selector)
+    {
+        return $this->getLineStyleArrowSize($this->lineProperties['style']['arrow'][$arrow_selector]['size'], $property_selector);
+    }
+
+    /**
+     * Set Shadow Properties.
+     *
+     * @param int $sh_presets
+     * @param string $sh_color_value
+     * @param string $sh_color_type
+     * @param int $sh_color_alpha
+     * @param string $sh_blur
+     * @param int $sh_angle
+     * @param float $sh_distance
+     */
+    public function setShadowProperties($sh_presets, $sh_color_value = null, $sh_color_type = null, $sh_color_alpha = null, $sh_blur = null, $sh_angle = null, $sh_distance = null)
+    {
+        $this->activateObject()
+            ->setShadowPresetsProperties((int) $sh_presets)
+            ->setShadowColor(
+                $sh_color_value === null ? $this->shadowProperties['color']['value'] : $sh_color_value,
+                $sh_color_alpha === null ? (int) $this->shadowProperties['color']['alpha'] : $this->getTrueAlpha($sh_color_alpha),
+                $sh_color_type === null ? $this->shadowProperties['color']['type'] : $sh_color_type
+            )
+            ->setShadowBlur($sh_blur)
+            ->setShadowAngle($sh_angle)
+            ->setShadowDistance($sh_distance);
+    }
+
+    /**
+     * Set Shadow Presets Properties.
+     *
+     * @param int $shadow_presets
+     *
+     * @return GridLines
+     */
+    private function setShadowPresetsProperties($shadow_presets)
+    {
+        $this->shadowProperties['presets'] = $shadow_presets;
+        $this->setShadowProperiesMapValues($this->getShadowPresetsMap($shadow_presets));
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Properties Values.
+     *
+     * @param array $properties_map
+     * @param mixed &$reference
+     *
+     * @return GridLines
+     */
+    private function setShadowProperiesMapValues(array $properties_map, &$reference = null)
+    {
+        $base_reference = $reference;
+        foreach ($properties_map as $property_key => $property_val) {
+            if (is_array($property_val)) {
+                if ($reference === null) {
+                    $reference = &$this->shadowProperties[$property_key];
+                } else {
+                    $reference = &$reference[$property_key];
+                }
+                $this->setShadowProperiesMapValues($property_val, $reference);
+            } else {
+                if ($base_reference === null) {
+                    $this->shadowProperties[$property_key] = $property_val;
+                } else {
+                    $reference[$property_key] = $property_val;
+                }
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Color.
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     *
+     * @return GridLines
+     */
+    private function setShadowColor($color, $alpha, $type)
+    {
+        if ($color !== null) {
+            $this->shadowProperties['color']['value'] = (string) $color;
+        }
+        if ($alpha !== null) {
+            $this->shadowProperties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
+        }
+        if ($type !== null) {
+            $this->shadowProperties['color']['type'] = (string) $type;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Blur.
+     *
+     * @param float $blur
+     *
+     * @return GridLines
+     */
+    private function setShadowBlur($blur)
+    {
+        if ($blur !== null) {
+            $this->shadowProperties['blur'] = (string) $this->getExcelPointsWidth($blur);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Angle.
+     *
+     * @param int $angle
+     *
+     * @return GridLines
+     */
+    private function setShadowAngle($angle)
+    {
+        if ($angle !== null) {
+            $this->shadowProperties['direction'] = (string) $this->getExcelPointsAngle($angle);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Distance.
+     *
+     * @param float $distance
+     *
+     * @return GridLines
+     */
+    private function setShadowDistance($distance)
+    {
+        if ($distance !== null) {
+            $this->shadowProperties['distance'] = (string) $this->getExcelPointsWidth($distance);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get Shadow Property.
+     *
+     * @param string|string[] $elements
+     *
+     * @return string
+     */
+    public function getShadowProperty($elements)
+    {
+        return $this->getArrayElementsValue($this->shadowProperties, $elements);
+    }
+
+    /**
+     * Set Soft Edges Size.
+     *
+     * @param float $size
+     */
+    public function setSoftEdgesSize($size)
+    {
+        if ($size !== null) {
+            $this->activateObject();
+            $this->softEdges['size'] = (string) $this->getExcelPointsWidth($size);
+        }
+    }
+
+    /**
+     * Get Soft Edges Size.
+     *
+     * @return string
+     */
+    public function getSoftEdgesSize()
+    {
+        return $this->softEdges['size'];
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Layout.php

@@ -0,0 +1,483 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+class Layout
+{
+    /**
+     * layoutTarget.
+     *
+     * @var string
+     */
+    private $layoutTarget;
+
+    /**
+     * X Mode.
+     *
+     * @var string
+     */
+    private $xMode;
+
+    /**
+     * Y Mode.
+     *
+     * @var string
+     */
+    private $yMode;
+
+    /**
+     * X-Position.
+     *
+     * @var float
+     */
+    private $xPos;
+
+    /**
+     * Y-Position.
+     *
+     * @var float
+     */
+    private $yPos;
+
+    /**
+     * width.
+     *
+     * @var float
+     */
+    private $width;
+
+    /**
+     * height.
+     *
+     * @var float
+     */
+    private $height;
+
+    /**
+     * show legend key
+     * Specifies that legend keys should be shown in data labels.
+     *
+     * @var bool
+     */
+    private $showLegendKey;
+
+    /**
+     * show value
+     * Specifies that the value should be shown in a data label.
+     *
+     * @var bool
+     */
+    private $showVal;
+
+    /**
+     * show category name
+     * Specifies that the category name should be shown in the data label.
+     *
+     * @var bool
+     */
+    private $showCatName;
+
+    /**
+     * show data series name
+     * Specifies that the series name should be shown in the data label.
+     *
+     * @var bool
+     */
+    private $showSerName;
+
+    /**
+     * show percentage
+     * Specifies that the percentage should be shown in the data label.
+     *
+     * @var bool
+     */
+    private $showPercent;
+
+    /**
+     * show bubble size.
+     *
+     * @var bool
+     */
+    private $showBubbleSize;
+
+    /**
+     * show leader lines
+     * Specifies that leader lines should be shown for the data label.
+     *
+     * @var bool
+     */
+    private $showLeaderLines;
+
+    /**
+     * Create a new Layout.
+     *
+     * @param array $layout
+     */
+    public function __construct(array $layout = [])
+    {
+        if (isset($layout['layoutTarget'])) {
+            $this->layoutTarget = $layout['layoutTarget'];
+        }
+        if (isset($layout['xMode'])) {
+            $this->xMode = $layout['xMode'];
+        }
+        if (isset($layout['yMode'])) {
+            $this->yMode = $layout['yMode'];
+        }
+        if (isset($layout['x'])) {
+            $this->xPos = (float) $layout['x'];
+        }
+        if (isset($layout['y'])) {
+            $this->yPos = (float) $layout['y'];
+        }
+        if (isset($layout['w'])) {
+            $this->width = (float) $layout['w'];
+        }
+        if (isset($layout['h'])) {
+            $this->height = (float) $layout['h'];
+        }
+    }
+
+    /**
+     * Get Layout Target.
+     *
+     * @return string
+     */
+    public function getLayoutTarget()
+    {
+        return $this->layoutTarget;
+    }
+
+    /**
+     * Set Layout Target.
+     *
+     * @param string $value
+     *
+     * @return Layout
+     */
+    public function setLayoutTarget($value)
+    {
+        $this->layoutTarget = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get X-Mode.
+     *
+     * @return string
+     */
+    public function getXMode()
+    {
+        return $this->xMode;
+    }
+
+    /**
+     * Set X-Mode.
+     *
+     * @param string $value
+     *
+     * @return Layout
+     */
+    public function setXMode($value)
+    {
+        $this->xMode = (string) $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Y-Mode.
+     *
+     * @return string
+     */
+    public function getYMode()
+    {
+        return $this->yMode;
+    }
+
+    /**
+     * Set Y-Mode.
+     *
+     * @param string $value
+     *
+     * @return Layout
+     */
+    public function setYMode($value)
+    {
+        $this->yMode = (string) $value;
+
+        return $this;
+    }
+
+    /**
+     * Get X-Position.
+     *
+     * @return number
+     */
+    public function getXPosition()
+    {
+        return $this->xPos;
+    }
+
+    /**
+     * Set X-Position.
+     *
+     * @param float $value
+     *
+     * @return Layout
+     */
+    public function setXPosition($value)
+    {
+        $this->xPos = (float) $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Y-Position.
+     *
+     * @return number
+     */
+    public function getYPosition()
+    {
+        return $this->yPos;
+    }
+
+    /**
+     * Set Y-Position.
+     *
+     * @param float $value
+     *
+     * @return Layout
+     */
+    public function setYPosition($value)
+    {
+        $this->yPos = (float) $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Width.
+     *
+     * @return number
+     */
+    public function getWidth()
+    {
+        return $this->width;
+    }
+
+    /**
+     * Set Width.
+     *
+     * @param float $value
+     *
+     * @return Layout
+     */
+    public function setWidth($value)
+    {
+        $this->width = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get Height.
+     *
+     * @return number
+     */
+    public function getHeight()
+    {
+        return $this->height;
+    }
+
+    /**
+     * Set Height.
+     *
+     * @param float $value
+     *
+     * @return Layout
+     */
+    public function setHeight($value)
+    {
+        $this->height = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show legend key.
+     *
+     * @return bool
+     */
+    public function getShowLegendKey()
+    {
+        return $this->showLegendKey;
+    }
+
+    /**
+     * Set show legend key
+     * Specifies that legend keys should be shown in data labels.
+     *
+     * @param bool $value Show legend key
+     *
+     * @return Layout
+     */
+    public function setShowLegendKey($value)
+    {
+        $this->showLegendKey = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show value.
+     *
+     * @return bool
+     */
+    public function getShowVal()
+    {
+        return $this->showVal;
+    }
+
+    /**
+     * Set show val
+     * Specifies that the value should be shown in data labels.
+     *
+     * @param bool $value Show val
+     *
+     * @return Layout
+     */
+    public function setShowVal($value)
+    {
+        $this->showVal = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show category name.
+     *
+     * @return bool
+     */
+    public function getShowCatName()
+    {
+        return $this->showCatName;
+    }
+
+    /**
+     * Set show cat name
+     * Specifies that the category name should be shown in data labels.
+     *
+     * @param bool $value Show cat name
+     *
+     * @return Layout
+     */
+    public function setShowCatName($value)
+    {
+        $this->showCatName = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show data series name.
+     *
+     * @return bool
+     */
+    public function getShowSerName()
+    {
+        return $this->showSerName;
+    }
+
+    /**
+     * Set show ser name
+     * Specifies that the series name should be shown in data labels.
+     *
+     * @param bool $value Show series name
+     *
+     * @return Layout
+     */
+    public function setShowSerName($value)
+    {
+        $this->showSerName = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show percentage.
+     *
+     * @return bool
+     */
+    public function getShowPercent()
+    {
+        return $this->showPercent;
+    }
+
+    /**
+     * Set show percentage
+     * Specifies that the percentage should be shown in data labels.
+     *
+     * @param bool $value Show percentage
+     *
+     * @return Layout
+     */
+    public function setShowPercent($value)
+    {
+        $this->showPercent = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show bubble size.
+     *
+     * @return bool
+     */
+    public function getShowBubbleSize()
+    {
+        return $this->showBubbleSize;
+    }
+
+    /**
+     * Set show bubble size
+     * Specifies that the bubble size should be shown in data labels.
+     *
+     * @param bool $value Show bubble size
+     *
+     * @return Layout
+     */
+    public function setShowBubbleSize($value)
+    {
+        $this->showBubbleSize = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get show leader lines.
+     *
+     * @return bool
+     */
+    public function getShowLeaderLines()
+    {
+        return $this->showLeaderLines;
+    }
+
+    /**
+     * Set show leader lines
+     * Specifies that leader lines should be shown in data labels.
+     *
+     * @param bool $value Show leader lines
+     *
+     * @return Layout
+     */
+    public function setShowLeaderLines($value)
+    {
+        $this->showLeaderLines = $value;
+
+        return $this;
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Legend.php

@@ -0,0 +1,158 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+class Legend
+{
+    /** Legend positions */
+    const XL_LEGEND_POSITION_BOTTOM = -4107; //    Below the chart.
+    const XL_LEGEND_POSITION_CORNER = 2; //    In the upper right-hand corner of the chart border.
+    const XL_LEGEND_POSITION_CUSTOM = -4161; //    A custom position.
+    const XL_LEGEND_POSITION_LEFT = -4131; //    Left of the chart.
+    const XL_LEGEND_POSITION_RIGHT = -4152; //    Right of the chart.
+    const XL_LEGEND_POSITION_TOP = -4160; //    Above the chart.
+
+    const POSITION_RIGHT = 'r';
+    const POSITION_LEFT = 'l';
+    const POSITION_BOTTOM = 'b';
+    const POSITION_TOP = 't';
+    const POSITION_TOPRIGHT = 'tr';
+
+    private static $positionXLref = [
+        self::XL_LEGEND_POSITION_BOTTOM => self::POSITION_BOTTOM,
+        self::XL_LEGEND_POSITION_CORNER => self::POSITION_TOPRIGHT,
+        self::XL_LEGEND_POSITION_CUSTOM => '??',
+        self::XL_LEGEND_POSITION_LEFT => self::POSITION_LEFT,
+        self::XL_LEGEND_POSITION_RIGHT => self::POSITION_RIGHT,
+        self::XL_LEGEND_POSITION_TOP => self::POSITION_TOP,
+    ];
+
+    /**
+     * Legend position.
+     *
+     * @var string
+     */
+    private $position = self::POSITION_RIGHT;
+
+    /**
+     * Allow overlay of other elements?
+     *
+     * @var bool
+     */
+    private $overlay = true;
+
+    /**
+     * Legend Layout.
+     *
+     * @var Layout
+     */
+    private $layout;
+
+    /**
+     * Create a new Legend.
+     *
+     * @param string $position
+     * @param null|Layout $layout
+     * @param bool $overlay
+     */
+    public function __construct($position = self::POSITION_RIGHT, Layout $layout = null, $overlay = false)
+    {
+        $this->setPosition($position);
+        $this->layout = $layout;
+        $this->setOverlay($overlay);
+    }
+
+    /**
+     * Get legend position as an excel string value.
+     *
+     * @return string
+     */
+    public function getPosition()
+    {
+        return $this->position;
+    }
+
+    /**
+     * Get legend position using an excel string value.
+     *
+     * @param string $position see self::POSITION_*
+     *
+     * @return bool
+     */
+    public function setPosition($position)
+    {
+        if (!in_array($position, self::$positionXLref)) {
+            return false;
+        }
+
+        $this->position = $position;
+
+        return true;
+    }
+
+    /**
+     * Get legend position as an Excel internal numeric value.
+     *
+     * @return int
+     */
+    public function getPositionXL()
+    {
+        return array_search($this->position, self::$positionXLref);
+    }
+
+    /**
+     * Set legend position using an Excel internal numeric value.
+     *
+     * @param int $positionXL see self::XL_LEGEND_POSITION_*
+     *
+     * @return bool
+     */
+    public function setPositionXL($positionXL)
+    {
+        if (!isset(self::$positionXLref[$positionXL])) {
+            return false;
+        }
+
+        $this->position = self::$positionXLref[$positionXL];
+
+        return true;
+    }
+
+    /**
+     * Get allow overlay of other elements?
+     *
+     * @return bool
+     */
+    public function getOverlay()
+    {
+        return $this->overlay;
+    }
+
+    /**
+     * Set allow overlay of other elements?
+     *
+     * @param bool $overlay
+     *
+     * @return bool
+     */
+    public function setOverlay($overlay)
+    {
+        if (!is_bool($overlay)) {
+            return false;
+        }
+
+        $this->overlay = $overlay;
+
+        return true;
+    }
+
+    /**
+     * Get Layout.
+     *
+     * @return Layout
+     */
+    public function getLayout()
+    {
+        return $this->layout;
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/PlotArea.php

@@ -0,0 +1,112 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class PlotArea
+{
+    /**
+     * PlotArea Layout.
+     *
+     * @var Layout
+     */
+    private $layout;
+
+    /**
+     * Plot Series.
+     *
+     * @var DataSeries[]
+     */
+    private $plotSeries = [];
+
+    /**
+     * Create a new PlotArea.
+     *
+     * @param null|Layout $layout
+     * @param DataSeries[] $plotSeries
+     */
+    public function __construct(Layout $layout = null, array $plotSeries = [])
+    {
+        $this->layout = $layout;
+        $this->plotSeries = $plotSeries;
+    }
+
+    /**
+     * Get Layout.
+     *
+     * @return Layout
+     */
+    public function getLayout()
+    {
+        return $this->layout;
+    }
+
+    /**
+     * Get Number of Plot Groups.
+     *
+     * @return array of DataSeries
+     */
+    public function getPlotGroupCount()
+    {
+        return count($this->plotSeries);
+    }
+
+    /**
+     * Get Number of Plot Series.
+     *
+     * @return int
+     */
+    public function getPlotSeriesCount()
+    {
+        $seriesCount = 0;
+        foreach ($this->plotSeries as $plot) {
+            $seriesCount += $plot->getPlotSeriesCount();
+        }
+
+        return $seriesCount;
+    }
+
+    /**
+     * Get Plot Series.
+     *
+     * @return array of DataSeries
+     */
+    public function getPlotGroup()
+    {
+        return $this->plotSeries;
+    }
+
+    /**
+     * Get Plot Series by Index.
+     *
+     * @param mixed $index
+     *
+     * @return DataSeries
+     */
+    public function getPlotGroupByIndex($index)
+    {
+        return $this->plotSeries[$index];
+    }
+
+    /**
+     * Set Plot Series.
+     *
+     * @param DataSeries[] $plotSeries
+     *
+     * @return PlotArea
+     */
+    public function setPlotSeries(array $plotSeries)
+    {
+        $this->plotSeries = $plotSeries;
+
+        return $this;
+    }
+
+    public function refresh(Worksheet $worksheet)
+    {
+        foreach ($this->plotSeries as $plotSeries) {
+            $plotSeries->refresh($worksheet);
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Properties.php

@@ -0,0 +1,369 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+/**
+ * Created by PhpStorm.
+ * User: nhw2h8s
+ * Date: 7/2/14
+ * Time: 5:45 PM.
+ */
+abstract class Properties
+{
+    const
+        EXCEL_COLOR_TYPE_STANDARD = 'prstClr';
+    const EXCEL_COLOR_TYPE_SCHEME = 'schemeClr';
+    const EXCEL_COLOR_TYPE_ARGB = 'srgbClr';
+
+    const
+        AXIS_LABELS_LOW = 'low';
+    const AXIS_LABELS_HIGH = 'high';
+    const AXIS_LABELS_NEXT_TO = 'nextTo';
+    const AXIS_LABELS_NONE = 'none';
+
+    const
+        TICK_MARK_NONE = 'none';
+    const TICK_MARK_INSIDE = 'in';
+    const TICK_MARK_OUTSIDE = 'out';
+    const TICK_MARK_CROSS = 'cross';
+
+    const
+        HORIZONTAL_CROSSES_AUTOZERO = 'autoZero';
+    const HORIZONTAL_CROSSES_MAXIMUM = 'max';
+
+    const
+        FORMAT_CODE_GENERAL = 'General';
+    const FORMAT_CODE_NUMBER = '#,##0.00';
+    const FORMAT_CODE_CURRENCY = '$#,##0.00';
+    const FORMAT_CODE_ACCOUNTING = '_($* #,##0.00_);_($* (#,##0.00);_($* "-"??_);_(@_)';
+    const FORMAT_CODE_DATE = 'm/d/yyyy';
+    const FORMAT_CODE_TIME = '[$-F400]h:mm:ss AM/PM';
+    const FORMAT_CODE_PERCENTAGE = '0.00%';
+    const FORMAT_CODE_FRACTION = '# ?/?';
+    const FORMAT_CODE_SCIENTIFIC = '0.00E+00';
+    const FORMAT_CODE_TEXT = '@';
+    const FORMAT_CODE_SPECIAL = '00000';
+
+    const
+        ORIENTATION_NORMAL = 'minMax';
+    const ORIENTATION_REVERSED = 'maxMin';
+
+    const
+        LINE_STYLE_COMPOUND_SIMPLE = 'sng';
+    const LINE_STYLE_COMPOUND_DOUBLE = 'dbl';
+    const LINE_STYLE_COMPOUND_THICKTHIN = 'thickThin';
+    const LINE_STYLE_COMPOUND_THINTHICK = 'thinThick';
+    const LINE_STYLE_COMPOUND_TRIPLE = 'tri';
+    const LINE_STYLE_DASH_SOLID = 'solid';
+    const LINE_STYLE_DASH_ROUND_DOT = 'sysDot';
+    const LINE_STYLE_DASH_SQUERE_DOT = 'sysDash';
+    const LINE_STYPE_DASH_DASH = 'dash';
+    const LINE_STYLE_DASH_DASH_DOT = 'dashDot';
+    const LINE_STYLE_DASH_LONG_DASH = 'lgDash';
+    const LINE_STYLE_DASH_LONG_DASH_DOT = 'lgDashDot';
+    const LINE_STYLE_DASH_LONG_DASH_DOT_DOT = 'lgDashDotDot';
+    const LINE_STYLE_CAP_SQUARE = 'sq';
+    const LINE_STYLE_CAP_ROUND = 'rnd';
+    const LINE_STYLE_CAP_FLAT = 'flat';
+    const LINE_STYLE_JOIN_ROUND = 'bevel';
+    const LINE_STYLE_JOIN_MITER = 'miter';
+    const LINE_STYLE_JOIN_BEVEL = 'bevel';
+    const LINE_STYLE_ARROW_TYPE_NOARROW = null;
+    const LINE_STYLE_ARROW_TYPE_ARROW = 'triangle';
+    const LINE_STYLE_ARROW_TYPE_OPEN = 'arrow';
+    const LINE_STYLE_ARROW_TYPE_STEALTH = 'stealth';
+    const LINE_STYLE_ARROW_TYPE_DIAMOND = 'diamond';
+    const LINE_STYLE_ARROW_TYPE_OVAL = 'oval';
+    const LINE_STYLE_ARROW_SIZE_1 = 1;
+    const LINE_STYLE_ARROW_SIZE_2 = 2;
+    const LINE_STYLE_ARROW_SIZE_3 = 3;
+    const LINE_STYLE_ARROW_SIZE_4 = 4;
+    const LINE_STYLE_ARROW_SIZE_5 = 5;
+    const LINE_STYLE_ARROW_SIZE_6 = 6;
+    const LINE_STYLE_ARROW_SIZE_7 = 7;
+    const LINE_STYLE_ARROW_SIZE_8 = 8;
+    const LINE_STYLE_ARROW_SIZE_9 = 9;
+
+    const
+        SHADOW_PRESETS_NOSHADOW = null;
+    const SHADOW_PRESETS_OUTER_BOTTTOM_RIGHT = 1;
+    const SHADOW_PRESETS_OUTER_BOTTOM = 2;
+    const SHADOW_PRESETS_OUTER_BOTTOM_LEFT = 3;
+    const SHADOW_PRESETS_OUTER_RIGHT = 4;
+    const SHADOW_PRESETS_OUTER_CENTER = 5;
+    const SHADOW_PRESETS_OUTER_LEFT = 6;
+    const SHADOW_PRESETS_OUTER_TOP_RIGHT = 7;
+    const SHADOW_PRESETS_OUTER_TOP = 8;
+    const SHADOW_PRESETS_OUTER_TOP_LEFT = 9;
+    const SHADOW_PRESETS_INNER_BOTTTOM_RIGHT = 10;
+    const SHADOW_PRESETS_INNER_BOTTOM = 11;
+    const SHADOW_PRESETS_INNER_BOTTOM_LEFT = 12;
+    const SHADOW_PRESETS_INNER_RIGHT = 13;
+    const SHADOW_PRESETS_INNER_CENTER = 14;
+    const SHADOW_PRESETS_INNER_LEFT = 15;
+    const SHADOW_PRESETS_INNER_TOP_RIGHT = 16;
+    const SHADOW_PRESETS_INNER_TOP = 17;
+    const SHADOW_PRESETS_INNER_TOP_LEFT = 18;
+    const SHADOW_PRESETS_PERSPECTIVE_BELOW = 19;
+    const SHADOW_PRESETS_PERSPECTIVE_UPPER_RIGHT = 20;
+    const SHADOW_PRESETS_PERSPECTIVE_UPPER_LEFT = 21;
+    const SHADOW_PRESETS_PERSPECTIVE_LOWER_RIGHT = 22;
+    const SHADOW_PRESETS_PERSPECTIVE_LOWER_LEFT = 23;
+
+    /**
+     * @param float $width
+     *
+     * @return float
+     */
+    protected function getExcelPointsWidth($width)
+    {
+        return $width * 12700;
+    }
+
+    /**
+     * @param float $angle
+     *
+     * @return float
+     */
+    protected function getExcelPointsAngle($angle)
+    {
+        return $angle * 60000;
+    }
+
+    protected function getTrueAlpha($alpha)
+    {
+        return (string) 100 - $alpha . '000';
+    }
+
+    protected function setColorProperties($color, $alpha, $type)
+    {
+        return [
+            'type' => (string) $type,
+            'value' => (string) $color,
+            'alpha' => (string) $this->getTrueAlpha($alpha),
+        ];
+    }
+
+    protected function getLineStyleArrowSize($array_selector, $array_kay_selector)
+    {
+        $sizes = [
+            1 => ['w' => 'sm', 'len' => 'sm'],
+            2 => ['w' => 'sm', 'len' => 'med'],
+            3 => ['w' => 'sm', 'len' => 'lg'],
+            4 => ['w' => 'med', 'len' => 'sm'],
+            5 => ['w' => 'med', 'len' => 'med'],
+            6 => ['w' => 'med', 'len' => 'lg'],
+            7 => ['w' => 'lg', 'len' => 'sm'],
+            8 => ['w' => 'lg', 'len' => 'med'],
+            9 => ['w' => 'lg', 'len' => 'lg'],
+        ];
+
+        return $sizes[$array_selector][$array_kay_selector];
+    }
+
+    protected function getShadowPresetsMap($shadow_presets_option)
+    {
+        $presets_options = [
+            //OUTER
+            1 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '2700000',
+                'algn' => 'tl',
+                'rotWithShape' => '0',
+            ],
+            2 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '5400000',
+                'algn' => 't',
+                'rotWithShape' => '0',
+            ],
+            3 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '8100000',
+                'algn' => 'tr',
+                'rotWithShape' => '0',
+            ],
+            4 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'algn' => 'l',
+                'rotWithShape' => '0',
+            ],
+            5 => [
+                'effect' => 'outerShdw',
+                'size' => [
+                    'sx' => '102000',
+                    'sy' => '102000',
+                ],
+                'blur' => '63500',
+                'distance' => '38100',
+                'algn' => 'ctr',
+                'rotWithShape' => '0',
+            ],
+            6 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '10800000',
+                'algn' => 'r',
+                'rotWithShape' => '0',
+            ],
+            7 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '18900000',
+                'algn' => 'bl',
+                'rotWithShape' => '0',
+            ],
+            8 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '16200000',
+                'rotWithShape' => '0',
+            ],
+            9 => [
+                'effect' => 'outerShdw',
+                'blur' => '50800',
+                'distance' => '38100',
+                'direction' => '13500000',
+                'algn' => 'br',
+                'rotWithShape' => '0',
+            ],
+            //INNER
+            10 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '2700000',
+            ],
+            11 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '5400000',
+            ],
+            12 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '8100000',
+            ],
+            13 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+            ],
+            14 => [
+                'effect' => 'innerShdw',
+                'blur' => '114300',
+            ],
+            15 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '10800000',
+            ],
+            16 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '18900000',
+            ],
+            17 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '16200000',
+            ],
+            18 => [
+                'effect' => 'innerShdw',
+                'blur' => '63500',
+                'distance' => '50800',
+                'direction' => '13500000',
+            ],
+            //perspective
+            19 => [
+                'effect' => 'outerShdw',
+                'blur' => '152400',
+                'distance' => '317500',
+                'size' => [
+                    'sx' => '90000',
+                    'sy' => '-19000',
+                ],
+                'direction' => '5400000',
+                'rotWithShape' => '0',
+            ],
+            20 => [
+                'effect' => 'outerShdw',
+                'blur' => '76200',
+                'direction' => '18900000',
+                'size' => [
+                    'sy' => '23000',
+                    'kx' => '-1200000',
+                ],
+                'algn' => 'bl',
+                'rotWithShape' => '0',
+            ],
+            21 => [
+                'effect' => 'outerShdw',
+                'blur' => '76200',
+                'direction' => '13500000',
+                'size' => [
+                    'sy' => '23000',
+                    'kx' => '1200000',
+                ],
+                'algn' => 'br',
+                'rotWithShape' => '0',
+            ],
+            22 => [
+                'effect' => 'outerShdw',
+                'blur' => '76200',
+                'distance' => '12700',
+                'direction' => '2700000',
+                'size' => [
+                    'sy' => '-23000',
+                    'kx' => '-800400',
+                ],
+                'algn' => 'bl',
+                'rotWithShape' => '0',
+            ],
+            23 => [
+                'effect' => 'outerShdw',
+                'blur' => '76200',
+                'distance' => '12700',
+                'direction' => '8100000',
+                'size' => [
+                    'sy' => '-23000',
+                    'kx' => '800400',
+                ],
+                'algn' => 'br',
+                'rotWithShape' => '0',
+            ],
+        ];
+
+        return $presets_options[$shadow_presets_option];
+    }
+
+    protected function getArrayElementsValue($properties, $elements)
+    {
+        $reference = &$properties;
+        if (!is_array($elements)) {
+            return $reference[$elements];
+        }
+
+        foreach ($elements as $keys) {
+            $reference = &$reference[$keys];
+        }
+
+        return $reference;
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Renderer/IRenderer.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart\Renderer;
+
+use PhpOffice\PhpSpreadsheet\Chart\Chart;
+
+interface IRenderer
+{
+    /**
+     * IRenderer constructor.
+     *
+     * @param \PhpOffice\PhpSpreadsheet\Chart\Chart $chart
+     */
+    public function __construct(Chart $chart);
+
+    /**
+     * Render the chart to given file (or stream).
+     *
+     * @param string $filename Name of the file render to
+     *
+     * @return bool true on success
+     */
+    public function render($filename);
+}

PhpOffice/PhpSpreadsheet/Chart/Renderer/JpGraph.php

@@ -0,0 +1,856 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart\Renderer;
+
+use PhpOffice\PhpSpreadsheet\Chart\Chart;
+use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
+
+require_once __DIR__ . '/Polyfill.php';
+
+class JpGraph implements IRenderer
+{
+    private static $width = 640;
+
+    private static $height = 480;
+
+    private static $colourSet = [
+        'mediumpurple1', 'palegreen3', 'gold1', 'cadetblue1',
+        'darkmagenta', 'coral', 'dodgerblue3', 'eggplant',
+        'mediumblue', 'magenta', 'sandybrown', 'cyan',
+        'firebrick1', 'forestgreen', 'deeppink4', 'darkolivegreen',
+        'goldenrod2',
+    ];
+
+    private static $markSet;
+
+    private $chart;
+
+    private $graph;
+
+    private static $plotColour = 0;
+
+    private static $plotMark = 0;
+
+    /**
+     * Create a new jpgraph.
+     *
+     * @param Chart $chart
+     */
+    public function __construct(Chart $chart)
+    {
+        self::init();
+        $this->graph = null;
+        $this->chart = $chart;
+    }
+
+    private static function init()
+    {
+        static $loaded = false;
+        if ($loaded) {
+            return;
+        }
+
+        \JpGraph\JpGraph::load();
+        \JpGraph\JpGraph::module('bar');
+        \JpGraph\JpGraph::module('contour');
+        \JpGraph\JpGraph::module('line');
+        \JpGraph\JpGraph::module('pie');
+        \JpGraph\JpGraph::module('pie3d');
+        \JpGraph\JpGraph::module('radar');
+        \JpGraph\JpGraph::module('regstat');
+        \JpGraph\JpGraph::module('scatter');
+        \JpGraph\JpGraph::module('stock');
+
+        self::$markSet = [
+            'diamond' => MARK_DIAMOND,
+            'square' => MARK_SQUARE,
+            'triangle' => MARK_UTRIANGLE,
+            'x' => MARK_X,
+            'star' => MARK_STAR,
+            'dot' => MARK_FILLEDCIRCLE,
+            'dash' => MARK_DTRIANGLE,
+            'circle' => MARK_CIRCLE,
+            'plus' => MARK_CROSS,
+        ];
+
+        $loaded = true;
+    }
+
+    private function formatPointMarker($seriesPlot, $markerID)
+    {
+        $plotMarkKeys = array_keys(self::$markSet);
+        if ($markerID === null) {
+            //    Use default plot marker (next marker in the series)
+            self::$plotMark %= count(self::$markSet);
+            $seriesPlot->mark->SetType(self::$markSet[$plotMarkKeys[self::$plotMark++]]);
+        } elseif ($markerID !== 'none') {
+            //    Use specified plot marker (if it exists)
+            if (isset(self::$markSet[$markerID])) {
+                $seriesPlot->mark->SetType(self::$markSet[$markerID]);
+            } else {
+                //    If the specified plot marker doesn't exist, use default plot marker (next marker in the series)
+                self::$plotMark %= count(self::$markSet);
+                $seriesPlot->mark->SetType(self::$markSet[$plotMarkKeys[self::$plotMark++]]);
+            }
+        } else {
+            //    Hide plot marker
+            $seriesPlot->mark->Hide();
+        }
+        $seriesPlot->mark->SetColor(self::$colourSet[self::$plotColour]);
+        $seriesPlot->mark->SetFillColor(self::$colourSet[self::$plotColour]);
+        $seriesPlot->SetColor(self::$colourSet[self::$plotColour++]);
+
+        return $seriesPlot;
+    }
+
+    private function formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation = '')
+    {
+        $datasetLabelFormatCode = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getFormatCode();
+        if ($datasetLabelFormatCode !== null) {
+            //    Retrieve any label formatting code
+            $datasetLabelFormatCode = stripslashes($datasetLabelFormatCode);
+        }
+
+        $testCurrentIndex = 0;
+        foreach ($datasetLabels as $i => $datasetLabel) {
+            if (is_array($datasetLabel)) {
+                if ($rotation == 'bar') {
+                    $datasetLabels[$i] = implode(' ', $datasetLabel);
+                } else {
+                    $datasetLabel = array_reverse($datasetLabel);
+                    $datasetLabels[$i] = implode("\n", $datasetLabel);
+                }
+            } else {
+                //    Format labels according to any formatting code
+                if ($datasetLabelFormatCode !== null) {
+                    $datasetLabels[$i] = NumberFormat::toFormattedString($datasetLabel, $datasetLabelFormatCode);
+                }
+            }
+            ++$testCurrentIndex;
+        }
+
+        return $datasetLabels;
+    }
+
+    private function percentageSumCalculation($groupID, $seriesCount)
+    {
+        $sumValues = [];
+        //    Adjust our values to a percentage value across all series in the group
+        for ($i = 0; $i < $seriesCount; ++$i) {
+            if ($i == 0) {
+                $sumValues = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+            } else {
+                $nextValues = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+                foreach ($nextValues as $k => $value) {
+                    if (isset($sumValues[$k])) {
+                        $sumValues[$k] += $value;
+                    } else {
+                        $sumValues[$k] = $value;
+                    }
+                }
+            }
+        }
+
+        return $sumValues;
+    }
+
+    private function percentageAdjustValues($dataValues, $sumValues)
+    {
+        foreach ($dataValues as $k => $dataValue) {
+            $dataValues[$k] = $dataValue / $sumValues[$k] * 100;
+        }
+
+        return $dataValues;
+    }
+
+    private function getCaption($captionElement)
+    {
+        //    Read any caption
+        $caption = ($captionElement !== null) ? $captionElement->getCaption() : null;
+        //    Test if we have a title caption to display
+        if ($caption !== null) {
+            //    If we do, it could be a plain string or an array
+            if (is_array($caption)) {
+                //    Implode an array to a plain string
+                $caption = implode('', $caption);
+            }
+        }
+
+        return $caption;
+    }
+
+    private function renderTitle()
+    {
+        $title = $this->getCaption($this->chart->getTitle());
+        if ($title !== null) {
+            $this->graph->title->Set($title);
+        }
+    }
+
+    private function renderLegend()
+    {
+        $legend = $this->chart->getLegend();
+        if ($legend !== null) {
+            $legendPosition = $legend->getPosition();
+            switch ($legendPosition) {
+                case 'r':
+                    $this->graph->legend->SetPos(0.01, 0.5, 'right', 'center'); //    right
+                    $this->graph->legend->SetColumns(1);
+
+                    break;
+                case 'l':
+                    $this->graph->legend->SetPos(0.01, 0.5, 'left', 'center'); //    left
+                    $this->graph->legend->SetColumns(1);
+
+                    break;
+                case 't':
+                    $this->graph->legend->SetPos(0.5, 0.01, 'center', 'top'); //    top
+                    break;
+                case 'b':
+                    $this->graph->legend->SetPos(0.5, 0.99, 'center', 'bottom'); //    bottom
+                    break;
+                default:
+                    $this->graph->legend->SetPos(0.01, 0.01, 'right', 'top'); //    top-right
+                    $this->graph->legend->SetColumns(1);
+
+                    break;
+            }
+        } else {
+            $this->graph->legend->Hide();
+        }
+    }
+
+    private function renderCartesianPlotArea($type = 'textlin')
+    {
+        $this->graph = new \Graph(self::$width, self::$height);
+        $this->graph->SetScale($type);
+
+        $this->renderTitle();
+
+        //    Rotate for bar rather than column chart
+        $rotation = $this->chart->getPlotArea()->getPlotGroupByIndex(0)->getPlotDirection();
+        $reverse = $rotation == 'bar';
+
+        $xAxisLabel = $this->chart->getXAxisLabel();
+        if ($xAxisLabel !== null) {
+            $title = $this->getCaption($xAxisLabel);
+            if ($title !== null) {
+                $this->graph->xaxis->SetTitle($title, 'center');
+                $this->graph->xaxis->title->SetMargin(35);
+                if ($reverse) {
+                    $this->graph->xaxis->title->SetAngle(90);
+                    $this->graph->xaxis->title->SetMargin(90);
+                }
+            }
+        }
+
+        $yAxisLabel = $this->chart->getYAxisLabel();
+        if ($yAxisLabel !== null) {
+            $title = $this->getCaption($yAxisLabel);
+            if ($title !== null) {
+                $this->graph->yaxis->SetTitle($title, 'center');
+                if ($reverse) {
+                    $this->graph->yaxis->title->SetAngle(0);
+                    $this->graph->yaxis->title->SetMargin(-55);
+                }
+            }
+        }
+    }
+
+    private function renderPiePlotArea()
+    {
+        $this->graph = new \PieGraph(self::$width, self::$height);
+
+        $this->renderTitle();
+    }
+
+    private function renderRadarPlotArea()
+    {
+        $this->graph = new \RadarGraph(self::$width, self::$height);
+        $this->graph->SetScale('lin');
+
+        $this->renderTitle();
+    }
+
+    private function renderPlotLine($groupID, $filled = false, $combination = false, $dimensions = '2d')
+    {
+        $grouping = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+
+        $labelCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount();
+        if ($labelCount > 0) {
+            $datasetLabels = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+            $datasetLabels = $this->formatDataSetLabels($groupID, $datasetLabels, $labelCount);
+            $this->graph->xaxis->SetTickLabels($datasetLabels);
+        }
+
+        $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+        $seriesPlots = [];
+        if ($grouping == 'percentStacked') {
+            $sumValues = $this->percentageSumCalculation($groupID, $seriesCount);
+        }
+
+        //    Loop through each data series in turn
+        for ($i = 0; $i < $seriesCount; ++$i) {
+            $dataValues = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+            $marker = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();
+
+            if ($grouping == 'percentStacked') {
+                $dataValues = $this->percentageAdjustValues($dataValues, $sumValues);
+            }
+
+            //    Fill in any missing values in the $dataValues array
+            $testCurrentIndex = 0;
+            foreach ($dataValues as $k => $dataValue) {
+                while ($k != $testCurrentIndex) {
+                    $dataValues[$testCurrentIndex] = null;
+                    ++$testCurrentIndex;
+                }
+                ++$testCurrentIndex;
+            }
+
+            $seriesPlot = new \LinePlot($dataValues);
+            if ($combination) {
+                $seriesPlot->SetBarCenter();
+            }
+
+            if ($filled) {
+                $seriesPlot->SetFilled(true);
+                $seriesPlot->SetColor('black');
+                $seriesPlot->SetFillColor(self::$colourSet[self::$plotColour++]);
+            } else {
+                //    Set the appropriate plot marker
+                $this->formatPointMarker($seriesPlot, $marker);
+            }
+            $dataLabel = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();
+            $seriesPlot->SetLegend($dataLabel);
+
+            $seriesPlots[] = $seriesPlot;
+        }
+
+        if ($grouping == 'standard') {
+            $groupPlot = $seriesPlots;
+        } else {
+            $groupPlot = new \AccLinePlot($seriesPlots);
+        }
+        $this->graph->Add($groupPlot);
+    }
+
+    private function renderPlotBar($groupID, $dimensions = '2d')
+    {
+        $rotation = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotDirection();
+        //    Rotate for bar rather than column chart
+        if (($groupID == 0) && ($rotation == 'bar')) {
+            $this->graph->Set90AndMargin();
+        }
+        $grouping = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+
+        $labelCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount();
+        if ($labelCount > 0) {
+            $datasetLabels = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+            $datasetLabels = $this->formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation);
+            //    Rotate for bar rather than column chart
+            if ($rotation == 'bar') {
+                $datasetLabels = array_reverse($datasetLabels);
+                $this->graph->yaxis->SetPos('max');
+                $this->graph->yaxis->SetLabelAlign('center', 'top');
+                $this->graph->yaxis->SetLabelSide(SIDE_RIGHT);
+            }
+            $this->graph->xaxis->SetTickLabels($datasetLabels);
+        }
+
+        $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+        $seriesPlots = [];
+        if ($grouping == 'percentStacked') {
+            $sumValues = $this->percentageSumCalculation($groupID, $seriesCount);
+        }
+
+        //    Loop through each data series in turn
+        for ($j = 0; $j < $seriesCount; ++$j) {
+            $dataValues = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($j)->getDataValues();
+            if ($grouping == 'percentStacked') {
+                $dataValues = $this->percentageAdjustValues($dataValues, $sumValues);
+            }
+
+            //    Fill in any missing values in the $dataValues array
+            $testCurrentIndex = 0;
+            foreach ($dataValues as $k => $dataValue) {
+                while ($k != $testCurrentIndex) {
+                    $dataValues[$testCurrentIndex] = null;
+                    ++$testCurrentIndex;
+                }
+                ++$testCurrentIndex;
+            }
+
+            //    Reverse the $dataValues order for bar rather than column chart
+            if ($rotation == 'bar') {
+                $dataValues = array_reverse($dataValues);
+            }
+            $seriesPlot = new \BarPlot($dataValues);
+            $seriesPlot->SetColor('black');
+            $seriesPlot->SetFillColor(self::$colourSet[self::$plotColour++]);
+            if ($dimensions == '3d') {
+                $seriesPlot->SetShadow();
+            }
+            if (!$this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($j)) {
+                $dataLabel = '';
+            } else {
+                $dataLabel = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($j)->getDataValue();
+            }
+            $seriesPlot->SetLegend($dataLabel);
+
+            $seriesPlots[] = $seriesPlot;
+        }
+        //    Reverse the plot order for bar rather than column chart
+        if (($rotation == 'bar') && ($grouping != 'percentStacked')) {
+            $seriesPlots = array_reverse($seriesPlots);
+        }
+
+        if ($grouping == 'clustered') {
+            $groupPlot = new \GroupBarPlot($seriesPlots);
+        } elseif ($grouping == 'standard') {
+            $groupPlot = new \GroupBarPlot($seriesPlots);
+        } else {
+            $groupPlot = new \AccBarPlot($seriesPlots);
+            if ($dimensions == '3d') {
+                $groupPlot->SetShadow();
+            }
+        }
+
+        $this->graph->Add($groupPlot);
+    }
+
+    private function renderPlotScatter($groupID, $bubble)
+    {
+        $grouping = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+        $scatterStyle = $bubbleSize = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+
+        $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+        $seriesPlots = [];
+
+        //    Loop through each data series in turn
+        for ($i = 0; $i < $seriesCount; ++$i) {
+            $dataValuesY = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();
+            $dataValuesX = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+
+            foreach ($dataValuesY as $k => $dataValueY) {
+                $dataValuesY[$k] = $k;
+            }
+
+            $seriesPlot = new \ScatterPlot($dataValuesX, $dataValuesY);
+            if ($scatterStyle == 'lineMarker') {
+                $seriesPlot->SetLinkPoints();
+                $seriesPlot->link->SetColor(self::$colourSet[self::$plotColour]);
+            } elseif ($scatterStyle == 'smoothMarker') {
+                $spline = new \Spline($dataValuesY, $dataValuesX);
+                [$splineDataY, $splineDataX] = $spline->Get(count($dataValuesX) * self::$width / 20);
+                $lplot = new \LinePlot($splineDataX, $splineDataY);
+                $lplot->SetColor(self::$colourSet[self::$plotColour]);
+
+                $this->graph->Add($lplot);
+            }
+
+            if ($bubble) {
+                $this->formatPointMarker($seriesPlot, 'dot');
+                $seriesPlot->mark->SetColor('black');
+                $seriesPlot->mark->SetSize($bubbleSize);
+            } else {
+                $marker = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();
+                $this->formatPointMarker($seriesPlot, $marker);
+            }
+            $dataLabel = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();
+            $seriesPlot->SetLegend($dataLabel);
+
+            $this->graph->Add($seriesPlot);
+        }
+    }
+
+    private function renderPlotRadar($groupID)
+    {
+        $radarStyle = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+
+        $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+        $seriesPlots = [];
+
+        //    Loop through each data series in turn
+        for ($i = 0; $i < $seriesCount; ++$i) {
+            $dataValuesY = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();
+            $dataValuesX = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+            $marker = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();
+
+            $dataValues = [];
+            foreach ($dataValuesY as $k => $dataValueY) {
+                $dataValues[$k] = implode(' ', array_reverse($dataValueY));
+            }
+            $tmp = array_shift($dataValues);
+            $dataValues[] = $tmp;
+            $tmp = array_shift($dataValuesX);
+            $dataValuesX[] = $tmp;
+
+            $this->graph->SetTitles(array_reverse($dataValues));
+
+            $seriesPlot = new \RadarPlot(array_reverse($dataValuesX));
+
+            $dataLabel = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();
+            $seriesPlot->SetColor(self::$colourSet[self::$plotColour++]);
+            if ($radarStyle == 'filled') {
+                $seriesPlot->SetFillColor(self::$colourSet[self::$plotColour]);
+            }
+            $this->formatPointMarker($seriesPlot, $marker);
+            $seriesPlot->SetLegend($dataLabel);
+
+            $this->graph->Add($seriesPlot);
+        }
+    }
+
+    private function renderPlotContour($groupID)
+    {
+        $contourStyle = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+
+        $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+        $seriesPlots = [];
+
+        $dataValues = [];
+        //    Loop through each data series in turn
+        for ($i = 0; $i < $seriesCount; ++$i) {
+            $dataValuesY = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();
+            $dataValuesX = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+
+            $dataValues[$i] = $dataValuesX;
+        }
+        $seriesPlot = new \ContourPlot($dataValues);
+
+        $this->graph->Add($seriesPlot);
+    }
+
+    private function renderPlotStock($groupID)
+    {
+        $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+        $plotOrder = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotOrder();
+
+        $dataValues = [];
+        //    Loop through each data series in turn and build the plot arrays
+        foreach ($plotOrder as $i => $v) {
+            $dataValuesX = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($v)->getDataValues();
+            foreach ($dataValuesX as $j => $dataValueX) {
+                $dataValues[$plotOrder[$i]][$j] = $dataValueX;
+            }
+        }
+        if (empty($dataValues)) {
+            return;
+        }
+
+        $dataValuesPlot = [];
+        // Flatten the plot arrays to a single dimensional array to work with jpgraph
+        $jMax = count($dataValues[0]);
+        for ($j = 0; $j < $jMax; ++$j) {
+            for ($i = 0; $i < $seriesCount; ++$i) {
+                $dataValuesPlot[] = $dataValues[$i][$j];
+            }
+        }
+
+        // Set the x-axis labels
+        $labelCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount();
+        if ($labelCount > 0) {
+            $datasetLabels = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+            $datasetLabels = $this->formatDataSetLabels($groupID, $datasetLabels, $labelCount);
+            $this->graph->xaxis->SetTickLabels($datasetLabels);
+        }
+
+        $seriesPlot = new \StockPlot($dataValuesPlot);
+        $seriesPlot->SetWidth(20);
+
+        $this->graph->Add($seriesPlot);
+    }
+
+    private function renderAreaChart($groupCount, $dimensions = '2d')
+    {
+        $this->renderCartesianPlotArea();
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $this->renderPlotLine($i, true, false, $dimensions);
+        }
+    }
+
+    private function renderLineChart($groupCount, $dimensions = '2d')
+    {
+        $this->renderCartesianPlotArea();
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $this->renderPlotLine($i, false, false, $dimensions);
+        }
+    }
+
+    private function renderBarChart($groupCount, $dimensions = '2d')
+    {
+        $this->renderCartesianPlotArea();
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $this->renderPlotBar($i, $dimensions);
+        }
+    }
+
+    private function renderScatterChart($groupCount)
+    {
+        $this->renderCartesianPlotArea('linlin');
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $this->renderPlotScatter($i, false);
+        }
+    }
+
+    private function renderBubbleChart($groupCount)
+    {
+        $this->renderCartesianPlotArea('linlin');
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $this->renderPlotScatter($i, true);
+        }
+    }
+
+    private function renderPieChart($groupCount, $dimensions = '2d', $doughnut = false, $multiplePlots = false)
+    {
+        $this->renderPiePlotArea();
+
+        $iLimit = ($multiplePlots) ? $groupCount : 1;
+        for ($groupID = 0; $groupID < $iLimit; ++$groupID) {
+            $grouping = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+            $exploded = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+            $datasetLabels = [];
+            if ($groupID == 0) {
+                $labelCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount();
+                if ($labelCount > 0) {
+                    $datasetLabels = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+                    $datasetLabels = $this->formatDataSetLabels($groupID, $datasetLabels, $labelCount);
+                }
+            }
+
+            $seriesCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+            $seriesPlots = [];
+            //    For pie charts, we only display the first series: doughnut charts generally display all series
+            $jLimit = ($multiplePlots) ? $seriesCount : 1;
+            //    Loop through each data series in turn
+            for ($j = 0; $j < $jLimit; ++$j) {
+                $dataValues = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($j)->getDataValues();
+
+                //    Fill in any missing values in the $dataValues array
+                $testCurrentIndex = 0;
+                foreach ($dataValues as $k => $dataValue) {
+                    while ($k != $testCurrentIndex) {
+                        $dataValues[$testCurrentIndex] = null;
+                        ++$testCurrentIndex;
+                    }
+                    ++$testCurrentIndex;
+                }
+
+                if ($dimensions == '3d') {
+                    $seriesPlot = new \PiePlot3D($dataValues);
+                } else {
+                    if ($doughnut) {
+                        $seriesPlot = new \PiePlotC($dataValues);
+                    } else {
+                        $seriesPlot = new \PiePlot($dataValues);
+                    }
+                }
+
+                if ($multiplePlots) {
+                    $seriesPlot->SetSize(($jLimit - $j) / ($jLimit * 4));
+                }
+
+                if ($doughnut) {
+                    $seriesPlot->SetMidColor('white');
+                }
+
+                $seriesPlot->SetColor(self::$colourSet[self::$plotColour++]);
+                if (count($datasetLabels) > 0) {
+                    $seriesPlot->SetLabels(array_fill(0, count($datasetLabels), ''));
+                }
+                if ($dimensions != '3d') {
+                    $seriesPlot->SetGuideLines(false);
+                }
+                if ($j == 0) {
+                    if ($exploded) {
+                        $seriesPlot->ExplodeAll();
+                    }
+                    $seriesPlot->SetLegends($datasetLabels);
+                }
+
+                $this->graph->Add($seriesPlot);
+            }
+        }
+    }
+
+    private function renderRadarChart($groupCount)
+    {
+        $this->renderRadarPlotArea();
+
+        for ($groupID = 0; $groupID < $groupCount; ++$groupID) {
+            $this->renderPlotRadar($groupID);
+        }
+    }
+
+    private function renderStockChart($groupCount)
+    {
+        $this->renderCartesianPlotArea('intint');
+
+        for ($groupID = 0; $groupID < $groupCount; ++$groupID) {
+            $this->renderPlotStock($groupID);
+        }
+    }
+
+    private function renderContourChart($groupCount, $dimensions)
+    {
+        $this->renderCartesianPlotArea('intint');
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $this->renderPlotContour($i);
+        }
+    }
+
+    private function renderCombinationChart($groupCount, $dimensions, $outputDestination)
+    {
+        $this->renderCartesianPlotArea();
+
+        for ($i = 0; $i < $groupCount; ++$i) {
+            $dimensions = null;
+            $chartType = $this->chart->getPlotArea()->getPlotGroupByIndex($i)->getPlotType();
+            switch ($chartType) {
+                case 'area3DChart':
+                    $dimensions = '3d';
+                // no break
+                case 'areaChart':
+                    $this->renderPlotLine($i, true, true, $dimensions);
+
+                    break;
+                case 'bar3DChart':
+                    $dimensions = '3d';
+                // no break
+                case 'barChart':
+                    $this->renderPlotBar($i, $dimensions);
+
+                    break;
+                case 'line3DChart':
+                    $dimensions = '3d';
+                // no break
+                case 'lineChart':
+                    $this->renderPlotLine($i, false, true, $dimensions);
+
+                    break;
+                case 'scatterChart':
+                    $this->renderPlotScatter($i, false);
+
+                    break;
+                case 'bubbleChart':
+                    $this->renderPlotScatter($i, true);
+
+                    break;
+                default:
+                    $this->graph = null;
+
+                    return false;
+            }
+        }
+
+        $this->renderLegend();
+
+        $this->graph->Stroke($outputDestination);
+
+        return true;
+    }
+
+    public function render($outputDestination)
+    {
+        self::$plotColour = 0;
+
+        $groupCount = $this->chart->getPlotArea()->getPlotGroupCount();
+
+        $dimensions = null;
+        if ($groupCount == 1) {
+            $chartType = $this->chart->getPlotArea()->getPlotGroupByIndex(0)->getPlotType();
+        } else {
+            $chartTypes = [];
+            for ($i = 0; $i < $groupCount; ++$i) {
+                $chartTypes[] = $this->chart->getPlotArea()->getPlotGroupByIndex($i)->getPlotType();
+            }
+            $chartTypes = array_unique($chartTypes);
+            if (count($chartTypes) == 1) {
+                $chartType = array_pop($chartTypes);
+            } elseif (count($chartTypes) == 0) {
+                echo 'Chart is not yet implemented<br />';
+
+                return false;
+            } else {
+                return $this->renderCombinationChart($groupCount, $dimensions, $outputDestination);
+            }
+        }
+
+        switch ($chartType) {
+            case 'area3DChart':
+                $dimensions = '3d';
+            // no break
+            case 'areaChart':
+                $this->renderAreaChart($groupCount, $dimensions);
+
+                break;
+            case 'bar3DChart':
+                $dimensions = '3d';
+            // no break
+            case 'barChart':
+                $this->renderBarChart($groupCount, $dimensions);
+
+                break;
+            case 'line3DChart':
+                $dimensions = '3d';
+            // no break
+            case 'lineChart':
+                $this->renderLineChart($groupCount, $dimensions);
+
+                break;
+            case 'pie3DChart':
+                $dimensions = '3d';
+            // no break
+            case 'pieChart':
+                $this->renderPieChart($groupCount, $dimensions, false, false);
+
+                break;
+            case 'doughnut3DChart':
+                $dimensions = '3d';
+            // no break
+            case 'doughnutChart':
+                $this->renderPieChart($groupCount, $dimensions, true, true);
+
+                break;
+            case 'scatterChart':
+                $this->renderScatterChart($groupCount);
+
+                break;
+            case 'bubbleChart':
+                $this->renderBubbleChart($groupCount);
+
+                break;
+            case 'radarChart':
+                $this->renderRadarChart($groupCount);
+
+                break;
+            case 'surface3DChart':
+                $dimensions = '3d';
+            // no break
+            case 'surfaceChart':
+                $this->renderContourChart($groupCount, $dimensions);
+
+                break;
+            case 'stockChart':
+                $this->renderStockChart($groupCount);
+
+                break;
+            default:
+                echo $chartType . ' is not yet implemented<br />';
+
+                return false;
+        }
+        $this->renderLegend();
+
+        $this->graph->Stroke($outputDestination);
+
+        return true;
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Renderer/PHP Charting Libraries.txt

@@ -0,0 +1,20 @@
+ChartDirector
+	https://www.advsofteng.com/cdphp.html
+
+GraPHPite
+	http://graphpite.sourceforge.net/
+
+JpGraph
+	http://www.aditus.nu/jpgraph/
+
+LibChart
+	https://naku.dohcrew.com/libchart/pages/introduction/
+
+pChart
+	http://pchart.sourceforge.net/
+
+TeeChart
+	https://www.steema.com/
+
+PHPGraphLib
+    http://www.ebrueggeman.com/phpgraphlib

PhpOffice/PhpSpreadsheet/Chart/Renderer/Polyfill.php

@@ -0,0 +1,9 @@
+<?php
+
+// This is a dirty workaround to output JpGraph charts even when antialiasing is not available
+if (!function_exists('imageantialias')) {
+    function imageantialias(...$args)
+    {
+        // Do nothing
+    }
+}

PhpOffice/PhpSpreadsheet/Chart/Title.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Chart;
+
+class Title
+{
+    /**
+     * Title Caption.
+     *
+     * @var string
+     */
+    private $caption;
+
+    /**
+     * Title Layout.
+     *
+     * @var Layout
+     */
+    private $layout;
+
+    /**
+     * Create a new Title.
+     *
+     * @param null|mixed $caption
+     * @param null|Layout $layout
+     */
+    public function __construct($caption = null, Layout $layout = null)
+    {
+        $this->caption = $caption;
+        $this->layout = $layout;
+    }
+
+    /**
+     * Get caption.
+     *
+     * @return string
+     */
+    public function getCaption()
+    {
+        return $this->caption;
+    }
+
+    /**
+     * Set caption.
+     *
+     * @param string $caption
+     *
+     * @return Title
+     */
+    public function setCaption($caption)
+    {
+        $this->caption = $caption;
+
+        return $this;
+    }
+
+    /**
+     * Get Layout.
+     *
+     * @return Layout
+     */
+    public function getLayout()
+    {
+        return $this->layout;
+    }
+}

PhpOffice/PhpSpreadsheet/Collection/Cells.php

@@ -0,0 +1,504 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Collection;
+
+use PhpOffice\PhpSpreadsheet\Cell\Cell;
+use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class Cells
+{
+    /**
+     */
+    private $cache;
+
+    /**
+     * Parent worksheet.
+     *
+     * @var Worksheet
+     */
+    private $parent;
+
+    /**
+     * The currently active Cell.
+     *
+     * @var Cell
+     */
+    private $currentCell;
+
+    /**
+     * Coordinate of the currently active Cell.
+     *
+     * @var string
+     */
+    private $currentCoordinate;
+
+    /**
+     * Flag indicating whether the currently active Cell requires saving.
+     *
+     * @var bool
+     */
+    private $currentCellIsDirty = false;
+
+    /**
+     * An index of existing cells. Booleans indexed by their coordinate.
+     *
+     * @var bool[]
+     */
+    private $index = [];
+
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet.
+     *
+     * @var string
+     */
+    private $cachePrefix;
+
+    /**
+     * Initialise this new cell collection.
+     *
+     * @param Worksheet $parent The worksheet for this cell collection
+     * @param CacheInterface $cache
+     */
+    public function __construct(Worksheet $parent, $cache)
+    {
+        // Set our parent worksheet.
+        // This is maintained here to facilitate re-attaching it to Cell objects when
+        // they are woken from a serialized state
+        $this->parent = $parent;
+        $this->cache = $cache;
+        $this->cachePrefix = $this->getUniqueID();
+    }
+
+    /**
+     * Return the parent worksheet for this cell collection.
+     *
+     * @return Worksheet
+     */
+    public function getParent()
+    {
+        return $this->parent;
+    }
+
+    /**
+     * Whether the collection holds a cell for the given coordinate.
+     *
+     * @param string $pCoord Coordinate of the cell to check
+     *
+     * @return bool
+     */
+    public function has($pCoord)
+    {
+        if ($pCoord === $this->currentCoordinate) {
+            return true;
+        }
+
+        // Check if the requested entry exists in the index
+        return isset($this->index[$pCoord]);
+    }
+
+    /**
+     * Add or update a cell in the collection.
+     *
+     * @param Cell $cell Cell to update
+     *
+     * @throws PhpSpreadsheetException
+     *
+     * @return Cell
+     */
+    public function update(Cell $cell)
+    {
+        return $this->add($cell->getCoordinate(), $cell);
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate.
+     *
+     * @param string $pCoord Coordinate of the cell to delete
+     */
+    public function delete($pCoord)
+    {
+        if ($pCoord === $this->currentCoordinate && $this->currentCell !== null) {
+            $this->currentCell->detach();
+            $this->currentCoordinate = null;
+            $this->currentCell = null;
+            $this->currentCellIsDirty = false;
+        }
+
+        unset($this->index[$pCoord]);
+
+        // Delete the entry from cache
+        $this->cache->delete($this->cachePrefix . $pCoord);
+    }
+
+    /**
+     * Get a list of all cell coordinates currently held in the collection.
+     *
+     * @return string[]
+     */
+    public function getCoordinates()
+    {
+        return array_keys($this->index);
+    }
+
+    /**
+     * Get a sorted list of all cell coordinates currently held in the collection by row and column.
+     *
+     * @return string[]
+     */
+    public function getSortedCoordinates()
+    {
+        $sortKeys = [];
+        foreach ($this->getCoordinates() as $coord) {
+            $column = '';
+            $row = 0;
+            sscanf($coord, '%[A-Z]%d', $column, $row);
+            $sortKeys[sprintf('%09d%3s', $row, $column)] = $coord;
+        }
+        ksort($sortKeys);
+
+        return array_values($sortKeys);
+    }
+
+    /**
+     * Get highest worksheet column and highest row that have cell records.
+     *
+     * @return array Highest column name and highest row number
+     */
+    public function getHighestRowAndColumn()
+    {
+        // Lookup highest column and highest row
+        $col = ['A' => '1A'];
+        $row = [1];
+        foreach ($this->getCoordinates() as $coord) {
+            $c = '';
+            $r = 0;
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            $row[$r] = $r;
+            $col[$c] = strlen($c) . $c;
+        }
+
+        // Determine highest column and row
+        $highestRow = max($row);
+        $highestColumn = substr(max($col), 1);
+
+        return [
+            'row' => $highestRow,
+            'column' => $highestColumn,
+        ];
+    }
+
+    /**
+     * Return the cell coordinate of the currently active cell object.
+     *
+     * @return string
+     */
+    public function getCurrentCoordinate()
+    {
+        return $this->currentCoordinate;
+    }
+
+    /**
+     * Return the column coordinate of the currently active cell object.
+     *
+     * @return string
+     */
+    public function getCurrentColumn()
+    {
+        $column = '';
+        $row = 0;
+
+        sscanf($this->currentCoordinate, '%[A-Z]%d', $column, $row);
+
+        return $column;
+    }
+
+    /**
+     * Return the row coordinate of the currently active cell object.
+     *
+     * @return int
+     */
+    public function getCurrentRow()
+    {
+        $column = '';
+        $row = 0;
+
+        sscanf($this->currentCoordinate, '%[A-Z]%d', $column, $row);
+
+        return (int) $row;
+    }
+
+    /**
+     * Get highest worksheet column.
+     *
+     * @param string $row Return the highest column for the specified row,
+     *                    or the highest column of any row if no row number is passed
+     *
+     * @return string Highest column name
+     */
+    public function getHighestColumn($row = null)
+    {
+        if ($row === null) {
+            $colRow = $this->getHighestRowAndColumn();
+
+            return $colRow['column'];
+        }
+
+        $columnList = [1];
+        foreach ($this->getCoordinates() as $coord) {
+            $c = '';
+            $r = 0;
+
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($r != $row) {
+                continue;
+            }
+            $columnList[] = Coordinate::columnIndexFromString($c);
+        }
+
+        return Coordinate::stringFromColumnIndex(max($columnList));
+    }
+
+    /**
+     * Get highest worksheet row.
+     *
+     * @param string $column Return the highest row for the specified column,
+     *                       or the highest row of any column if no column letter is passed
+     *
+     * @return int Highest row number
+     */
+    public function getHighestRow($column = null)
+    {
+        if ($column === null) {
+            $colRow = $this->getHighestRowAndColumn();
+
+            return $colRow['row'];
+        }
+
+        $rowList = [0];
+        foreach ($this->getCoordinates() as $coord) {
+            $c = '';
+            $r = 0;
+
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($c != $column) {
+                continue;
+            }
+            $rowList[] = $r;
+        }
+
+        return max($rowList);
+    }
+
+    /**
+     * Generate a unique ID for cache referencing.
+     *
+     * @return string Unique Reference
+     */
+    private function getUniqueID()
+    {
+        return uniqid('phpspreadsheet.', true) . '.';
+    }
+
+    /**
+     * Clone the cell collection.
+     *
+     * @param Worksheet $parent The new worksheet that we're copying to
+     *
+     * @return self
+     */
+    public function cloneCellCollection(Worksheet $parent)
+    {
+        $this->storeCurrentCell();
+        $newCollection = clone $this;
+
+        $newCollection->parent = $parent;
+        if (($newCollection->currentCell !== null) && (is_object($newCollection->currentCell))) {
+            $newCollection->currentCell->attach($this);
+        }
+
+        // Get old values
+        $oldKeys = $newCollection->getAllCacheKeys();
+        $oldValues = $newCollection->cache->getMultiple($oldKeys);
+        $newValues = [];
+        $oldCachePrefix = $newCollection->cachePrefix;
+
+        // Change prefix
+        $newCollection->cachePrefix = $newCollection->getUniqueID();
+        foreach ($oldValues as $oldKey => $value) {
+            $newValues[str_replace($oldCachePrefix, $newCollection->cachePrefix, $oldKey)] = clone $value;
+        }
+
+        // Store new values
+        $stored = $newCollection->cache->setMultiple($newValues);
+        if (!$stored) {
+            $newCollection->__destruct();
+
+            throw new PhpSpreadsheetException('Failed to copy cells in cache');
+        }
+
+        return $newCollection;
+    }
+
+    /**
+     * Remove a row, deleting all cells in that row.
+     *
+     * @param string $row Row number to remove
+     */
+    public function removeRow($row)
+    {
+        foreach ($this->getCoordinates() as $coord) {
+            $c = '';
+            $r = 0;
+
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($r == $row) {
+                $this->delete($coord);
+            }
+        }
+    }
+
+    /**
+     * Remove a column, deleting all cells in that column.
+     *
+     * @param string $column Column ID to remove
+     */
+    public function removeColumn($column)
+    {
+        foreach ($this->getCoordinates() as $coord) {
+            $c = '';
+            $r = 0;
+
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($c == $column) {
+                $this->delete($coord);
+            }
+        }
+    }
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     * and the 'nullify' the current cell object.
+     *
+     * @throws PhpSpreadsheetException
+     */
+    private function storeCurrentCell()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentCoordinate)) {
+            $this->currentCell->detach();
+
+            $stored = $this->cache->set($this->cachePrefix . $this->currentCoordinate, $this->currentCell);
+            if (!$stored) {
+                $this->__destruct();
+
+                throw new PhpSpreadsheetException("Failed to store cell {$this->currentCoordinate} in cache");
+            }
+            $this->currentCellIsDirty = false;
+        }
+
+        $this->currentCoordinate = null;
+        $this->currentCell = null;
+    }
+
+    /**
+     * Add or update a cell identified by its coordinate into the collection.
+     *
+     * @param string $pCoord Coordinate of the cell to update
+     * @param Cell $cell Cell to update
+     *
+     * @throws PhpSpreadsheetException
+     *
+     * @return \PhpOffice\PhpSpreadsheet\Cell\Cell
+     */
+    public function add($pCoord, Cell $cell)
+    {
+        if ($pCoord !== $this->currentCoordinate) {
+            $this->storeCurrentCell();
+        }
+        $this->index[$pCoord] = true;
+
+        $this->currentCoordinate = $pCoord;
+        $this->currentCell = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate.
+     *
+     * @param string $pCoord Coordinate of the cell
+     *
+     * @throws PhpSpreadsheetException
+     *
+     * @return \PhpOffice\PhpSpreadsheet\Cell\Cell Cell that was found, or null if not found
+     */
+    public function get($pCoord)
+    {
+        if ($pCoord === $this->currentCoordinate) {
+            return $this->currentCell;
+        }
+        $this->storeCurrentCell();
+
+        // Return null if requested entry doesn't exist in collection
+        if (!$this->has($pCoord)) {
+            return null;
+        }
+
+        // Check if the entry that has been requested actually exists
+        $cell = $this->cache->get($this->cachePrefix . $pCoord);
+        if ($cell === null) {
+            throw new PhpSpreadsheetException("Cell entry {$pCoord} no longer exists in cache. This probably means that the cache was cleared by someone else.");
+        }
+
+        // Set current entry to the requested entry
+        $this->currentCoordinate = $pCoord;
+        $this->currentCell = $cell;
+        // Re-attach this as the cell's parent
+        $this->currentCell->attach($this);
+
+        // Return requested entry
+        return $this->currentCell;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent.
+     */
+    public function unsetWorksheetCells()
+    {
+        if ($this->currentCell !== null) {
+            $this->currentCell->detach();
+            $this->currentCell = null;
+            $this->currentCoordinate = null;
+        }
+
+        // Flush the cache
+        $this->__destruct();
+
+        $this->index = [];
+
+        // detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+
+    /**
+     * Destroy this cell collection.
+     */
+    public function __destruct()
+    {
+        $this->cache->deleteMultiple($this->getAllCacheKeys());
+    }
+
+    /**
+     * Returns all known cache keys.
+     *
+     * @return \Generator|string[]
+     */
+    private function getAllCacheKeys()
+    {
+        foreach ($this->getCoordinates() as $coordinate) {
+            yield $this->cachePrefix . $coordinate;
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Collection/CellsFactory.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Collection;
+
+use PhpOffice\PhpSpreadsheet\Settings;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+abstract class CellsFactory
+{
+    /**
+     * Initialise the cache storage.
+     *
+     * @param Worksheet $parent Enable cell caching for this worksheet
+     *
+     * @return Cells
+     * */
+    public static function getInstance(Worksheet $parent)
+    {
+        $instance = new Cells($parent, Settings::getCache());
+
+        return $instance;
+    }
+}

PhpOffice/PhpSpreadsheet/Collection/Memory.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Collection;
+
+/**
+ * This is the default implementation for in-memory cell collection.
+ *
+ * Alternatives implementation should leverage off-memory, non-volatile storage
+ * to reduce overall memory usage.
+ */
+class Memory
+{
+    private $cache = [];
+
+    public function clear()
+    {
+        $this->cache = [];
+
+        return true;
+    }
+
+    public function delete($key)
+    {
+        unset($this->cache[$key]);
+
+        return true;
+    }
+
+    public function deleteMultiple($keys)
+    {
+        foreach ($keys as $key) {
+            $this->delete($key);
+        }
+
+        return true;
+    }
+
+    public function get($key, $default = null)
+    {
+        if ($this->has($key)) {
+            return $this->cache[$key];
+        }
+
+        return $default;
+    }
+
+    public function getMultiple($keys, $default = null)
+    {
+        $results = [];
+        foreach ($keys as $key) {
+            $results[$key] = $this->get($key, $default);
+        }
+
+        return $results;
+    }
+
+    public function has($key)
+    {
+        return array_key_exists($key, $this->cache);
+    }
+
+    public function set($key, $value, $ttl = null)
+    {
+        $this->cache[$key] = $value;
+
+        return true;
+    }
+
+    public function setMultiple($values, $ttl = null)
+    {
+        foreach ($values as $key => $value) {
+            $this->set($key, $value);
+        }
+
+        return true;
+    }
+}

PhpOffice/PhpSpreadsheet/Comment.php

@@ -0,0 +1,331 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet;
+
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+
+class Comment implements IComparable
+{
+    /**
+     * Author.
+     *
+     * @var string
+     */
+    private $author;
+
+    /**
+     * Rich text comment.
+     *
+     * @var RichText
+     */
+    private $text;
+
+    /**
+     * Comment width (CSS style, i.e. XXpx or YYpt).
+     *
+     * @var string
+     */
+    private $width = '96pt';
+
+    /**
+     * Left margin (CSS style, i.e. XXpx or YYpt).
+     *
+     * @var string
+     */
+    private $marginLeft = '59.25pt';
+
+    /**
+     * Top margin (CSS style, i.e. XXpx or YYpt).
+     *
+     * @var string
+     */
+    private $marginTop = '1.5pt';
+
+    /**
+     * Visible.
+     *
+     * @var bool
+     */
+    private $visible = false;
+
+    /**
+     * Comment height (CSS style, i.e. XXpx or YYpt).
+     *
+     * @var string
+     */
+    private $height = '55.5pt';
+
+    /**
+     * Comment fill color.
+     *
+     * @var Style\Color
+     */
+    private $fillColor;
+
+    /**
+     * Alignment.
+     *
+     * @var string
+     */
+    private $alignment;
+
+    /**
+     * Create a new Comment.
+     */
+    public function __construct()
+    {
+        // Initialise variables
+        $this->author = 'Author';
+        $this->text = new RichText();
+        $this->fillColor = new Style\Color('FFFFFFE1');
+        $this->alignment = Style\Alignment::HORIZONTAL_GENERAL;
+    }
+
+    /**
+     * Get Author.
+     *
+     * @return string
+     */
+    public function getAuthor()
+    {
+        return $this->author;
+    }
+
+    /**
+     * Set Author.
+     *
+     * @param string $author
+     *
+     * @return Comment
+     */
+    public function setAuthor($author)
+    {
+        $this->author = $author;
+
+        return $this;
+    }
+
+    /**
+     * Get Rich text comment.
+     *
+     * @return RichText
+     */
+    public function getText()
+    {
+        return $this->text;
+    }
+
+    /**
+     * Set Rich text comment.
+     *
+     * @param RichText $pValue
+     *
+     * @return Comment
+     */
+    public function setText(RichText $pValue)
+    {
+        $this->text = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get comment width (CSS style, i.e. XXpx or YYpt).
+     *
+     * @return string
+     */
+    public function getWidth()
+    {
+        return $this->width;
+    }
+
+    /**
+     * Set comment width (CSS style, i.e. XXpx or YYpt).
+     *
+     * @param string $width
+     *
+     * @return Comment
+     */
+    public function setWidth($width)
+    {
+        $this->width = $width;
+
+        return $this;
+    }
+
+    /**
+     * Get comment height (CSS style, i.e. XXpx or YYpt).
+     *
+     * @return string
+     */
+    public function getHeight()
+    {
+        return $this->height;
+    }
+
+    /**
+     * Set comment height (CSS style, i.e. XXpx or YYpt).
+     *
+     * @param string $value
+     *
+     * @return Comment
+     */
+    public function setHeight($value)
+    {
+        $this->height = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get left margin (CSS style, i.e. XXpx or YYpt).
+     *
+     * @return string
+     */
+    public function getMarginLeft()
+    {
+        return $this->marginLeft;
+    }
+
+    /**
+     * Set left margin (CSS style, i.e. XXpx or YYpt).
+     *
+     * @param string $value
+     *
+     * @return Comment
+     */
+    public function setMarginLeft($value)
+    {
+        $this->marginLeft = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get top margin (CSS style, i.e. XXpx or YYpt).
+     *
+     * @return string
+     */
+    public function getMarginTop()
+    {
+        return $this->marginTop;
+    }
+
+    /**
+     * Set top margin (CSS style, i.e. XXpx or YYpt).
+     *
+     * @param string $value
+     *
+     * @return Comment
+     */
+    public function setMarginTop($value)
+    {
+        $this->marginTop = $value;
+
+        return $this;
+    }
+
+    /**
+     * Is the comment visible by default?
+     *
+     * @return bool
+     */
+    public function getVisible()
+    {
+        return $this->visible;
+    }
+
+    /**
+     * Set comment default visibility.
+     *
+     * @param bool $value
+     *
+     * @return Comment
+     */
+    public function setVisible($value)
+    {
+        $this->visible = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get fill color.
+     *
+     * @return Style\Color
+     */
+    public function getFillColor()
+    {
+        return $this->fillColor;
+    }
+
+    /**
+     * Set Alignment.
+     *
+     * @param string $alignment see Style\Alignment::HORIZONTAL_*
+     *
+     * @return Comment
+     */
+    public function setAlignment($alignment)
+    {
+        $this->alignment = $alignment;
+
+        return $this;
+    }
+
+    /**
+     * Get Alignment.
+     *
+     * @return string
+     */
+    public function getAlignment()
+    {
+        return $this->alignment;
+    }
+
+    /**
+     * Get hash code.
+     *
+     * @return string Hash code
+     */
+    public function getHashCode()
+    {
+        return md5(
+            $this->author .
+            $this->text->getHashCode() .
+            $this->width .
+            $this->height .
+            $this->marginLeft .
+            $this->marginTop .
+            ($this->visible ? 1 : 0) .
+            $this->fillColor->getHashCode() .
+            $this->alignment .
+            __CLASS__
+        );
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+
+    /**
+     * Convert to string.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->text->getPlainText();
+    }
+}

PhpOffice/PhpSpreadsheet/Document/Properties.php

@@ -0,0 +1,629 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Document;
+
+class Properties
+{
+    /** constants */
+    const PROPERTY_TYPE_BOOLEAN = 'b';
+    const PROPERTY_TYPE_INTEGER = 'i';
+    const PROPERTY_TYPE_FLOAT = 'f';
+    const PROPERTY_TYPE_DATE = 'd';
+    const PROPERTY_TYPE_STRING = 's';
+    const PROPERTY_TYPE_UNKNOWN = 'u';
+
+    /**
+     * Creator.
+     *
+     * @var string
+     */
+    private $creator = 'Unknown Creator';
+
+    /**
+     * LastModifiedBy.
+     *
+     * @var string
+     */
+    private $lastModifiedBy;
+
+    /**
+     * Created.
+     *
+     * @var int
+     */
+    private $created;
+
+    /**
+     * Modified.
+     *
+     * @var int
+     */
+    private $modified;
+
+    /**
+     * Title.
+     *
+     * @var string
+     */
+    private $title = 'Untitled Spreadsheet';
+
+    /**
+     * Description.
+     *
+     * @var string
+     */
+    private $description = '';
+
+    /**
+     * Subject.
+     *
+     * @var string
+     */
+    private $subject = '';
+
+    /**
+     * Keywords.
+     *
+     * @var string
+     */
+    private $keywords = '';
+
+    /**
+     * Category.
+     *
+     * @var string
+     */
+    private $category = '';
+
+    /**
+     * Manager.
+     *
+     * @var string
+     */
+    private $manager = '';
+
+    /**
+     * Company.
+     *
+     * @var string
+     */
+    private $company = 'Microsoft Corporation';
+
+    /**
+     * Custom Properties.
+     *
+     * @var string
+     */
+    private $customProperties = [];
+
+    /**
+     * Create a new Document Properties instance.
+     */
+    public function __construct()
+    {
+        // Initialise values
+        $this->lastModifiedBy = $this->creator;
+        $this->created = time();
+        $this->modified = time();
+    }
+
+    /**
+     * Get Creator.
+     *
+     * @return string
+     */
+    public function getCreator()
+    {
+        return $this->creator;
+    }
+
+    /**
+     * Set Creator.
+     *
+     * @param string $creator
+     *
+     * @return Properties
+     */
+    public function setCreator($creator)
+    {
+        $this->creator = $creator;
+
+        return $this;
+    }
+
+    /**
+     * Get Last Modified By.
+     *
+     * @return string
+     */
+    public function getLastModifiedBy()
+    {
+        return $this->lastModifiedBy;
+    }
+
+    /**
+     * Set Last Modified By.
+     *
+     * @param string $pValue
+     *
+     * @return Properties
+     */
+    public function setLastModifiedBy($pValue)
+    {
+        $this->lastModifiedBy = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get Created.
+     *
+     * @return int
+     */
+    public function getCreated()
+    {
+        return $this->created;
+    }
+
+    /**
+     * Set Created.
+     *
+     * @param int|string $time
+     *
+     * @return Properties
+     */
+    public function setCreated($time)
+    {
+        if ($time === null) {
+            $time = time();
+        } elseif (is_string($time)) {
+            if (is_numeric($time)) {
+                $time = (int) $time;
+            } else {
+                $time = strtotime($time);
+            }
+        }
+
+        $this->created = $time;
+
+        return $this;
+    }
+
+    /**
+     * Get Modified.
+     *
+     * @return int
+     */
+    public function getModified()
+    {
+        return $this->modified;
+    }
+
+    /**
+     * Set Modified.
+     *
+     * @param int|string $time
+     *
+     * @return Properties
+     */
+    public function setModified($time)
+    {
+        if ($time === null) {
+            $time = time();
+        } elseif (is_string($time)) {
+            if (is_numeric($time)) {
+                $time = (int) $time;
+            } else {
+                $time = strtotime($time);
+            }
+        }
+
+        $this->modified = $time;
+
+        return $this;
+    }
+
+    /**
+     * Get Title.
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        return $this->title;
+    }
+
+    /**
+     * Set Title.
+     *
+     * @param string $title
+     *
+     * @return Properties
+     */
+    public function setTitle($title)
+    {
+        $this->title = $title;
+
+        return $this;
+    }
+
+    /**
+     * Get Description.
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+
+    /**
+     * Set Description.
+     *
+     * @param string $description
+     *
+     * @return Properties
+     */
+    public function setDescription($description)
+    {
+        $this->description = $description;
+
+        return $this;
+    }
+
+    /**
+     * Get Subject.
+     *
+     * @return string
+     */
+    public function getSubject()
+    {
+        return $this->subject;
+    }
+
+    /**
+     * Set Subject.
+     *
+     * @param string $subject
+     *
+     * @return Properties
+     */
+    public function setSubject($subject)
+    {
+        $this->subject = $subject;
+
+        return $this;
+    }
+
+    /**
+     * Get Keywords.
+     *
+     * @return string
+     */
+    public function getKeywords()
+    {
+        return $this->keywords;
+    }
+
+    /**
+     * Set Keywords.
+     *
+     * @param string $keywords
+     *
+     * @return Properties
+     */
+    public function setKeywords($keywords)
+    {
+        $this->keywords = $keywords;
+
+        return $this;
+    }
+
+    /**
+     * Get Category.
+     *
+     * @return string
+     */
+    public function getCategory()
+    {
+        return $this->category;
+    }
+
+    /**
+     * Set Category.
+     *
+     * @param string $category
+     *
+     * @return Properties
+     */
+    public function setCategory($category)
+    {
+        $this->category = $category;
+
+        return $this;
+    }
+
+    /**
+     * Get Company.
+     *
+     * @return string
+     */
+    public function getCompany()
+    {
+        return $this->company;
+    }
+
+    /**
+     * Set Company.
+     *
+     * @param string $company
+     *
+     * @return Properties
+     */
+    public function setCompany($company)
+    {
+        $this->company = $company;
+
+        return $this;
+    }
+
+    /**
+     * Get Manager.
+     *
+     * @return string
+     */
+    public function getManager()
+    {
+        return $this->manager;
+    }
+
+    /**
+     * Set Manager.
+     *
+     * @param string $manager
+     *
+     * @return Properties
+     */
+    public function setManager($manager)
+    {
+        $this->manager = $manager;
+
+        return $this;
+    }
+
+    /**
+     * Get a List of Custom Property Names.
+     *
+     * @return array of string
+     */
+    public function getCustomProperties()
+    {
+        return array_keys($this->customProperties);
+    }
+
+    /**
+     * Check if a Custom Property is defined.
+     *
+     * @param string $propertyName
+     *
+     * @return bool
+     */
+    public function isCustomPropertySet($propertyName)
+    {
+        return isset($this->customProperties[$propertyName]);
+    }
+
+    /**
+     * Get a Custom Property Value.
+     *
+     * @param string $propertyName
+     *
+     * @return mixed
+     */
+    public function getCustomPropertyValue($propertyName)
+    {
+        if (isset($this->customProperties[$propertyName])) {
+            return $this->customProperties[$propertyName]['value'];
+        }
+    }
+
+    /**
+     * Get a Custom Property Type.
+     *
+     * @param string $propertyName
+     *
+     * @return string
+     */
+    public function getCustomPropertyType($propertyName)
+    {
+        if (isset($this->customProperties[$propertyName])) {
+            return $this->customProperties[$propertyName]['type'];
+        }
+    }
+
+    /**
+     * Set a Custom Property.
+     *
+     * @param string $propertyName
+     * @param mixed $propertyValue
+     * @param string $propertyType
+     *      'i'    : Integer
+     *   'f' : Floating Point
+     *   's' : String
+     *   'd' : Date/Time
+     *   'b' : Boolean
+     *
+     * @return Properties
+     */
+    public function setCustomProperty($propertyName, $propertyValue = '', $propertyType = null)
+    {
+        if (($propertyType === null) || (!in_array($propertyType, [self::PROPERTY_TYPE_INTEGER,
+                                                                        self::PROPERTY_TYPE_FLOAT,
+                                                                        self::PROPERTY_TYPE_STRING,
+                                                                        self::PROPERTY_TYPE_DATE,
+                                                                        self::PROPERTY_TYPE_BOOLEAN, ]))) {
+            if ($propertyValue === null) {
+                $propertyType = self::PROPERTY_TYPE_STRING;
+            } elseif (is_float($propertyValue)) {
+                $propertyType = self::PROPERTY_TYPE_FLOAT;
+            } elseif (is_int($propertyValue)) {
+                $propertyType = self::PROPERTY_TYPE_INTEGER;
+            } elseif (is_bool($propertyValue)) {
+                $propertyType = self::PROPERTY_TYPE_BOOLEAN;
+            } else {
+                $propertyType = self::PROPERTY_TYPE_STRING;
+            }
+        }
+
+        $this->customProperties[$propertyName] = [
+            'value' => $propertyValue,
+            'type' => $propertyType,
+        ];
+
+        return $this;
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+
+    public static function convertProperty($propertyValue, $propertyType)
+    {
+        switch ($propertyType) {
+            case 'empty':     //    Empty
+                return '';
+
+                break;
+            case 'null':      //    Null
+                return null;
+
+                break;
+            case 'i1':        //    1-Byte Signed Integer
+            case 'i2':        //    2-Byte Signed Integer
+            case 'i4':        //    4-Byte Signed Integer
+            case 'i8':        //    8-Byte Signed Integer
+            case 'int':       //    Integer
+                return (int) $propertyValue;
+
+                break;
+            case 'ui1':       //    1-Byte Unsigned Integer
+            case 'ui2':       //    2-Byte Unsigned Integer
+            case 'ui4':       //    4-Byte Unsigned Integer
+            case 'ui8':       //    8-Byte Unsigned Integer
+            case 'uint':      //    Unsigned Integer
+                return abs((int) $propertyValue);
+
+                break;
+            case 'r4':        //    4-Byte Real Number
+            case 'r8':        //    8-Byte Real Number
+            case 'decimal':   //    Decimal
+                return (float) $propertyValue;
+
+                break;
+            case 'lpstr':     //    LPSTR
+            case 'lpwstr':    //    LPWSTR
+            case 'bstr':      //    Basic String
+                return $propertyValue;
+
+                break;
+            case 'date':      //    Date and Time
+            case 'filetime':  //    File Time
+                return strtotime($propertyValue);
+
+                break;
+            case 'bool':     //    Boolean
+                return $propertyValue == 'true';
+
+                break;
+            case 'cy':       //    Currency
+            case 'error':    //    Error Status Code
+            case 'vector':   //    Vector
+            case 'array':    //    Array
+            case 'blob':     //    Binary Blob
+            case 'oblob':    //    Binary Blob Object
+            case 'stream':   //    Binary Stream
+            case 'ostream':  //    Binary Stream Object
+            case 'storage':  //    Binary Storage
+            case 'ostorage': //    Binary Storage Object
+            case 'vstream':  //    Binary Versioned Stream
+            case 'clsid':    //    Class ID
+            case 'cf':       //    Clipboard Data
+                return $propertyValue;
+
+                break;
+        }
+
+        return $propertyValue;
+    }
+
+    public static function convertPropertyType($propertyType)
+    {
+        switch ($propertyType) {
+            case 'i1':       //    1-Byte Signed Integer
+            case 'i2':       //    2-Byte Signed Integer
+            case 'i4':       //    4-Byte Signed Integer
+            case 'i8':       //    8-Byte Signed Integer
+            case 'int':      //    Integer
+            case 'ui1':      //    1-Byte Unsigned Integer
+            case 'ui2':      //    2-Byte Unsigned Integer
+            case 'ui4':      //    4-Byte Unsigned Integer
+            case 'ui8':      //    8-Byte Unsigned Integer
+            case 'uint':     //    Unsigned Integer
+                return self::PROPERTY_TYPE_INTEGER;
+
+                break;
+            case 'r4':       //    4-Byte Real Number
+            case 'r8':       //    8-Byte Real Number
+            case 'decimal':  //    Decimal
+                return self::PROPERTY_TYPE_FLOAT;
+
+                break;
+            case 'empty':    //    Empty
+            case 'null':     //    Null
+            case 'lpstr':    //    LPSTR
+            case 'lpwstr':   //    LPWSTR
+            case 'bstr':     //    Basic String
+                return self::PROPERTY_TYPE_STRING;
+
+                break;
+            case 'date':     //    Date and Time
+            case 'filetime': //    File Time
+                return self::PROPERTY_TYPE_DATE;
+
+                break;
+            case 'bool':     //    Boolean
+                return self::PROPERTY_TYPE_BOOLEAN;
+
+                break;
+            case 'cy':       //    Currency
+            case 'error':    //    Error Status Code
+            case 'vector':   //    Vector
+            case 'array':    //    Array
+            case 'blob':     //    Binary Blob
+            case 'oblob':    //    Binary Blob Object
+            case 'stream':   //    Binary Stream
+            case 'ostream':  //    Binary Stream Object
+            case 'storage':  //    Binary Storage
+            case 'ostorage': //    Binary Storage Object
+            case 'vstream':  //    Binary Versioned Stream
+            case 'clsid':    //    Class ID
+            case 'cf':       //    Clipboard Data
+                return self::PROPERTY_TYPE_UNKNOWN;
+
+                break;
+        }
+
+        return self::PROPERTY_TYPE_UNKNOWN;
+    }
+}

PhpOffice/PhpSpreadsheet/Document/Security.php

@@ -0,0 +1,205 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Document;
+
+use PhpOffice\PhpSpreadsheet\Shared\PasswordHasher;
+
+class Security
+{
+    /**
+     * LockRevision.
+     *
+     * @var bool
+     */
+    private $lockRevision = false;
+
+    /**
+     * LockStructure.
+     *
+     * @var bool
+     */
+    private $lockStructure = false;
+
+    /**
+     * LockWindows.
+     *
+     * @var bool
+     */
+    private $lockWindows = false;
+
+    /**
+     * RevisionsPassword.
+     *
+     * @var string
+     */
+    private $revisionsPassword = '';
+
+    /**
+     * WorkbookPassword.
+     *
+     * @var string
+     */
+    private $workbookPassword = '';
+
+    /**
+     * Create a new Document Security instance.
+     */
+    public function __construct()
+    {
+    }
+
+    /**
+     * Is some sort of document security enabled?
+     *
+     * @return bool
+     */
+    public function isSecurityEnabled()
+    {
+        return  $this->lockRevision ||
+                $this->lockStructure ||
+                $this->lockWindows;
+    }
+
+    /**
+     * Get LockRevision.
+     *
+     * @return bool
+     */
+    public function getLockRevision()
+    {
+        return $this->lockRevision;
+    }
+
+    /**
+     * Set LockRevision.
+     *
+     * @param bool $pValue
+     *
+     * @return Security
+     */
+    public function setLockRevision($pValue)
+    {
+        $this->lockRevision = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get LockStructure.
+     *
+     * @return bool
+     */
+    public function getLockStructure()
+    {
+        return $this->lockStructure;
+    }
+
+    /**
+     * Set LockStructure.
+     *
+     * @param bool $pValue
+     *
+     * @return Security
+     */
+    public function setLockStructure($pValue)
+    {
+        $this->lockStructure = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get LockWindows.
+     *
+     * @return bool
+     */
+    public function getLockWindows()
+    {
+        return $this->lockWindows;
+    }
+
+    /**
+     * Set LockWindows.
+     *
+     * @param bool $pValue
+     *
+     * @return Security
+     */
+    public function setLockWindows($pValue)
+    {
+        $this->lockWindows = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get RevisionsPassword (hashed).
+     *
+     * @return string
+     */
+    public function getRevisionsPassword()
+    {
+        return $this->revisionsPassword;
+    }
+
+    /**
+     * Set RevisionsPassword.
+     *
+     * @param string $pValue
+     * @param bool $pAlreadyHashed If the password has already been hashed, set this to true
+     *
+     * @return Security
+     */
+    public function setRevisionsPassword($pValue, $pAlreadyHashed = false)
+    {
+        if (!$pAlreadyHashed) {
+            $pValue = PasswordHasher::hashPassword($pValue);
+        }
+        $this->revisionsPassword = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get WorkbookPassword (hashed).
+     *
+     * @return string
+     */
+    public function getWorkbookPassword()
+    {
+        return $this->workbookPassword;
+    }
+
+    /**
+     * Set WorkbookPassword.
+     *
+     * @param string $pValue
+     * @param bool $pAlreadyHashed If the password has already been hashed, set this to true
+     *
+     * @return Security
+     */
+    public function setWorkbookPassword($pValue, $pAlreadyHashed = false)
+    {
+        if (!$pAlreadyHashed) {
+            $pValue = PasswordHasher::hashPassword($pValue);
+        }
+        $this->workbookPassword = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Exception.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet;
+
+class Exception extends \Exception
+{
+}

PhpOffice/PhpSpreadsheet/HashTable.php

@@ -0,0 +1,179 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet;
+
+class HashTable
+{
+    /**
+     * HashTable elements.
+     *
+     * @var IComparable[]
+     */
+    protected $items = [];
+
+    /**
+     * HashTable key map.
+     *
+     * @var string[]
+     */
+    protected $keyMap = [];
+
+    /**
+     * Create a new \PhpOffice\PhpSpreadsheet\HashTable.
+     *
+     * @param IComparable[] $pSource Optional source array to create HashTable from
+     *
+     * @throws Exception
+     */
+    public function __construct($pSource = null)
+    {
+        if ($pSource !== null) {
+            // Create HashTable
+            $this->addFromSource($pSource);
+        }
+    }
+
+    /**
+     * Add HashTable items from source.
+     *
+     * @param IComparable[] $pSource Source array to create HashTable from
+     *
+     * @throws Exception
+     */
+    public function addFromSource(array $pSource = null)
+    {
+        // Check if an array was passed
+        if ($pSource == null) {
+            return;
+        }
+
+        foreach ($pSource as $item) {
+            $this->add($item);
+        }
+    }
+
+    /**
+     * Add HashTable item.
+     *
+     * @param IComparable $pSource Item to add
+     */
+    public function add(IComparable $pSource)
+    {
+        $hash = $pSource->getHashCode();
+        if (!isset($this->items[$hash])) {
+            $this->items[$hash] = $pSource;
+            $this->keyMap[count($this->items) - 1] = $hash;
+        }
+    }
+
+    /**
+     * Remove HashTable item.
+     *
+     * @param IComparable $pSource Item to remove
+     */
+    public function remove(IComparable $pSource)
+    {
+        $hash = $pSource->getHashCode();
+        if (isset($this->items[$hash])) {
+            unset($this->items[$hash]);
+
+            $deleteKey = -1;
+            foreach ($this->keyMap as $key => $value) {
+                if ($deleteKey >= 0) {
+                    $this->keyMap[$key - 1] = $value;
+                }
+
+                if ($value == $hash) {
+                    $deleteKey = $key;
+                }
+            }
+            unset($this->keyMap[count($this->keyMap) - 1]);
+        }
+    }
+
+    /**
+     * Clear HashTable.
+     */
+    public function clear()
+    {
+        $this->items = [];
+        $this->keyMap = [];
+    }
+
+    /**
+     * Count.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->items);
+    }
+
+    /**
+     * Get index for hash code.
+     *
+     * @param string $pHashCode
+     *
+     * @return int Index
+     */
+    public function getIndexForHashCode($pHashCode)
+    {
+        return array_search($pHashCode, $this->keyMap);
+    }
+
+    /**
+     * Get by index.
+     *
+     * @param int $pIndex
+     *
+     * @return IComparable
+     */
+    public function getByIndex($pIndex)
+    {
+        if (isset($this->keyMap[$pIndex])) {
+            return $this->getByHashCode($this->keyMap[$pIndex]);
+        }
+
+        return null;
+    }
+
+    /**
+     * Get by hashcode.
+     *
+     * @param string $pHashCode
+     *
+     * @return IComparable
+     */
+    public function getByHashCode($pHashCode)
+    {
+        if (isset($this->items[$pHashCode])) {
+            return $this->items[$pHashCode];
+        }
+
+        return null;
+    }
+
+    /**
+     * HashTable to array.
+     *
+     * @return IComparable[]
+     */
+    public function toArray()
+    {
+        return $this->items;
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            }
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Helper/Html.php

@@ -1,8 +1,18 @@
 <?php
 
-class PHPExcel_Helper_HTML
+namespace PhpOffice\PhpSpreadsheet\Helper;
+
+use DOMDocument;
+use DOMElement;
+use DOMNode;
+use DOMText;
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+use PhpOffice\PhpSpreadsheet\Style\Color;
+use PhpOffice\PhpSpreadsheet\Style\Font;
+
+class Html
 {
-    protected static $colourMap = array(
+    protected static $colourMap = [
         'aliceblue' => 'f0f8ff',
         'antiquewhite' => 'faebd7',
         'antiquewhite1' => 'ffefdb',
@@ -520,20 +530,27 @@ class PHPExcel_Helper_HTML
         'yellow3' => 'cdcd00',
         'yellow4' => '8b8b00',
         'yellowgreen' => '9acd32',
-    );
+    ];
 
     protected $face;
+
     protected $size;
+
     protected $color;
 
-	protected $bold = false;
+    protected $bold = false;
-	protected $italic = false;
-	protected $underline = false;
-	protected $superscript = false;
-	protected $subscript = false;
-	protected $strikethrough = false;
 
-    protected $startTagCallbacks = array(
+    protected $italic = false;
+
+    protected $underline = false;
+
+    protected $superscript = false;
+
+    protected $subscript = false;
+
+    protected $strikethrough = false;
+
+    protected $startTagCallbacks = [
         'font' => 'startFontTag',
         'b' => 'startBoldTag',
         'strong' => 'startBoldTag',
@@ -544,9 +561,9 @@ class PHPExcel_Helper_HTML
         'del' => 'startStrikethruTag',
         'sup' => 'startSuperscriptTag',
         'sub' => 'startSubscriptTag',
-    );
+    ];
 
-    protected $endTagCallbacks = array(
+    protected $endTagCallbacks = [
         'font' => 'endFontTag',
         'b' => 'endBoldTag',
         'strong' => 'endBoldTag',
@@ -565,44 +582,76 @@ class PHPExcel_Helper_HTML
         'h4' => 'breakTag',
         'h5' => 'breakTag',
         'h6' => 'breakTag',
-    );
+    ];
 
-    protected $stack = array();
+    protected $stack = [];
 
     protected $stringData = '';
 
+    /**
+     * @var RichText
+     */
     protected $richTextObject;
 
-    protected function initialise() {
+    protected function initialise()
+    {
         $this->face = $this->size = $this->color = null;
         $this->bold = $this->italic = $this->underline = $this->superscript = $this->subscript = $this->strikethrough = false;
 
-        $this->stack = array();
+        $this->stack = [];
 
         $this->stringData = '';
     }
 
-    public function toRichTextObject($html) {
+    /**
+     * Parse HTML formatting and return the resulting RichText.
+     *
+     * @param string $html
+     *
+     * @return RichText
+     */
+    public function toRichTextObject($html)
+    {
         $this->initialise();
 
-        //	Create a new DOM object
+        //    Create a new DOM object
-        $dom = new domDocument;
+        $dom = new DOMDocument();
-        //	Load the HTML file into the DOM object
+        //    Load the HTML file into the DOM object
         //  Note the use of error suppression, because typically this will be an html fragment, so not fully valid markup
-        $loaded = @$dom->loadHTML($html);
+        $prefix = '<?xml encoding="UTF-8">';
-
+        @$dom->loadHTML($prefix . $html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
-        //	Discard excess white space
+        //    Discard excess white space
         $dom->preserveWhiteSpace = false;
 
-        $this->richTextObject = new PHPExcel_RichText();;
+        $this->richTextObject = new RichText();
         $this->parseElements($dom);
+
+        // Clean any further spurious whitespace
+        $this->cleanWhitespace();
+
         return $this->richTextObject;
     }
 
-    protected function buildTextRun() {
+    protected function cleanWhitespace()
+    {
+        foreach ($this->richTextObject->getRichTextElements() as $key => $element) {
+            $text = $element->getText();
+            // Trim any leading spaces on the first run
+            if ($key == 0) {
+                $text = ltrim($text);
+            }
+            // Trim any spaces immediately after a line break
+            $text = preg_replace('/\n */mu', "\n", $text);
+            $element->setText($text);
+        }
+    }
+
+    protected function buildTextRun()
+    {
         $text = $this->stringData;
-        if (trim($text) === '')
+        if (trim($text) === '') {
             return;
+        }
 
         $richtextRun = $this->richTextObject->createTextRun($this->stringData);
         if ($this->face) {
@@ -612,7 +661,7 @@ class PHPExcel_Helper_HTML
             $richtextRun->getFont()->setSize($this->size);
         }
         if ($this->color) {
-            $richtextRun->getFont()->setColor( new PHPExcel_Style_Color( 'ff' . $this->color ) );
+            $richtextRun->getFont()->setColor(new Color('ff' . $this->color));
         }
         if ($this->bold) {
             $richtextRun->getFont()->setBold(true);
@@ -621,13 +670,13 @@ class PHPExcel_Helper_HTML
             $richtextRun->getFont()->setItalic(true);
         }
         if ($this->underline) {
-            $richtextRun->getFont()->setUnderline(PHPExcel_Style_Font::UNDERLINE_SINGLE);
+            $richtextRun->getFont()->setUnderline(Font::UNDERLINE_SINGLE);
         }
         if ($this->superscript) {
-            $richtextRun->getFont()->setSuperScript(true);
+            $richtextRun->getFont()->setSuperscript(true);
         }
         if ($this->subscript) {
-            $richtextRun->getFont()->setSubScript(true);
+            $richtextRun->getFont()->setSubscript(true);
         }
         if ($this->strikethrough) {
             $richtextRun->getFont()->setStrikethrough(true);
@@ -635,19 +684,23 @@ class PHPExcel_Helper_HTML
         $this->stringData = '';
     }
 
-    protected function rgbToColour($rgb) {
+    protected function rgbToColour($rgb)
+    {
         preg_match_all('/\d+/', $rgb, $values);
-        foreach($values[0] as &$value) {
+        foreach ($values[0] as &$value) {
             $value = str_pad(dechex($value), 2, '0', STR_PAD_LEFT);
         }
+
         return implode($values[0]);
     }
 
-    protected function colourNameLookup($rgb) {
+    protected function colourNameLookup($rgb)
+    {
         return self::$colourMap[$rgb];
     }
 
-    protected function startFontTag($tag) {
+    protected function startFontTag($tag)
+    {
         foreach ($tag->attributes as $attribute) {
             $attributeName = strtolower($attribute->name);
             $attributeValue = $attribute->value;
@@ -655,7 +708,7 @@ class PHPExcel_Helper_HTML
             if ($attributeName == 'color') {
                 if (preg_match('/rgb\s*\(/', $attributeValue)) {
                     $this->$attributeName = $this->rgbToColour($attributeValue);
-                } elseif(strpos(trim($attributeValue), '#') === 0) {
+                } elseif (strpos(trim($attributeValue), '#') === 0) {
                     $this->$attributeName = ltrim($attributeValue, '#');
                 } else {
                     $this->$attributeName = $this->colourNameLookup($attributeValue);
@@ -666,91 +719,117 @@ class PHPExcel_Helper_HTML
         }
     }
 
-    protected function endFontTag() {
+    protected function endFontTag()
+    {
         $this->face = $this->size = $this->color = null;
     }
 
-    protected function startBoldTag() {
+    protected function startBoldTag()
+    {
         $this->bold = true;
     }
 
-    protected function endBoldTag() {
+    protected function endBoldTag()
+    {
         $this->bold = false;
     }
 
-    protected function startItalicTag() {
+    protected function startItalicTag()
+    {
         $this->italic = true;
     }
 
-    protected function endItalicTag() {
+    protected function endItalicTag()
+    {
         $this->italic = false;
     }
 
-    protected function startUnderlineTag() {
+    protected function startUnderlineTag()
+    {
         $this->underline = true;
     }
 
-    protected function endUnderlineTag() {
+    protected function endUnderlineTag()
+    {
         $this->underline = false;
     }
 
-    protected function startSubscriptTag() {
+    protected function startSubscriptTag()
+    {
         $this->subscript = true;
     }
 
-    protected function endSubscriptTag() {
+    protected function endSubscriptTag()
+    {
         $this->subscript = false;
     }
 
-    protected function startSuperscriptTag() {
+    protected function startSuperscriptTag()
+    {
         $this->superscript = true;
     }
 
-    protected function endSuperscriptTag() {
+    protected function endSuperscriptTag()
+    {
         $this->superscript = false;
     }
 
-    protected function startStrikethruTag() {
+    protected function startStrikethruTag()
+    {
         $this->strikethrough = true;
     }
 
-    protected function endStrikethruTag() {
+    protected function endStrikethruTag()
+    {
         $this->strikethrough = false;
     }
 
-    protected function breakTag() {
+    protected function breakTag()
-        $this->stringData .= PHP_EOL;
+    {
+        $this->stringData .= "\n";
     }
 
-    protected function parseTextNode(DOMText $textNode) {
+    protected function parseTextNode(DOMText $textNode)
-        $domText = preg_replace('/\s+/u', ' ', ltrim($textNode->nodeValue));
+    {
+        $domText = preg_replace(
+            '/\s+/u',
+            ' ',
+            str_replace(["\r", "\n"], ' ', $textNode->nodeValue)
+        );
         $this->stringData .= $domText;
         $this->buildTextRun();
     }
 
-    protected function handleCallback($element, $callbackTag, $callbacks) {
+    /**
+     * @param DOMElement $element
+     * @param string $callbackTag
+     * @param array $callbacks
+     */
+    protected function handleCallback(DOMElement $element, $callbackTag, array $callbacks)
+    {
         if (isset($callbacks[$callbackTag])) {
             $elementHandler = $callbacks[$callbackTag];
             if (method_exists($this, $elementHandler)) {
-                call_user_func(array($this, $elementHandler), $element);
+                call_user_func([$this, $elementHandler], $element);
             }
         }
     }
 
-    protected function parseElementNode(DOMElement $element) {
+    protected function parseElementNode(DOMElement $element)
+    {
         $callbackTag = strtolower($element->nodeName);
         $this->stack[] = $callbackTag;
 
         $this->handleCallback($element, $callbackTag, $this->startTagCallbacks);
 
         $this->parseElements($element);
-        $this->stringData .= ' ';
         array_pop($this->stack);
 
         $this->handleCallback($element, $callbackTag, $this->endTagCallbacks);
     }
 
-    protected function parseElements(DOMNode $element) {
+    protected function parseElements(DOMNode $element)
+    {
         foreach ($element->childNodes as $child) {
             if ($child instanceof DOMText) {
                 $this->parseTextNode($child);

PhpOffice/PhpSpreadsheet/Helper/Migrator.php

@@ -0,0 +1,333 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Helper;
+
+class Migrator
+{
+    /**
+     * @var string[]
+     */
+    private $from;
+
+    /**
+     * @var string[]
+     */
+    private $to;
+
+    public function __construct()
+    {
+        $this->from = array_keys($this->getMapping());
+        $this->to = array_values($this->getMapping());
+    }
+
+    /**
+     * Return the ordered mapping from old PHPExcel class names to new PhpSpreadsheet one.
+     *
+     * @return string[]
+     */
+    public function getMapping()
+    {
+        // Order matters here, we should have the deepest namespaces first (the most "unique" strings)
+        $classes = [
+            'PHPExcel_Shared_Escher_DggContainer_BstoreContainer_BSE_Blip' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DggContainer\BstoreContainer\BSE\Blip::class,
+            'PHPExcel_Shared_Escher_DgContainer_SpgrContainer_SpContainer' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DgContainer\SpgrContainer\SpContainer::class,
+            'PHPExcel_Shared_Escher_DggContainer_BstoreContainer_BSE' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DggContainer\BstoreContainer\BSE::class,
+            'PHPExcel_Shared_Escher_DgContainer_SpgrContainer' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DgContainer\SpgrContainer::class,
+            'PHPExcel_Shared_Escher_DggContainer_BstoreContainer' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DggContainer\BstoreContainer::class,
+            'PHPExcel_Shared_OLE_PPS_File' => \PhpOffice\PhpSpreadsheet\Shared\OLE\PPS\File::class,
+            'PHPExcel_Shared_OLE_PPS_Root' => \PhpOffice\PhpSpreadsheet\Shared\OLE\PPS\Root::class,
+            'PHPExcel_Worksheet_AutoFilter_Column_Rule' => \PhpOffice\PhpSpreadsheet\Worksheet\AutoFilter\Column\Rule::class,
+            'PHPExcel_Writer_OpenDocument_Cell_Comment' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Cell\Comment::class,
+            'PHPExcel_Calculation_Token_Stack' => \PhpOffice\PhpSpreadsheet\Calculation\Token\Stack::class,
+            'PHPExcel_Chart_Renderer_jpgraph' => \PhpOffice\PhpSpreadsheet\Chart\Renderer\JpGraph::class,
+            'PHPExcel_Reader_Excel5_Escher' => \PhpOffice\PhpSpreadsheet\Reader\Xls\Escher::class,
+            'PHPExcel_Reader_Excel5_MD5' => \PhpOffice\PhpSpreadsheet\Reader\Xls\MD5::class,
+            'PHPExcel_Reader_Excel5_RC4' => \PhpOffice\PhpSpreadsheet\Reader\Xls\RC4::class,
+            'PHPExcel_Reader_Excel2007_Chart' => \PhpOffice\PhpSpreadsheet\Reader\Xlsx\Chart::class,
+            'PHPExcel_Reader_Excel2007_Theme' => \PhpOffice\PhpSpreadsheet\Reader\Xlsx\Theme::class,
+            'PHPExcel_Shared_Escher_DgContainer' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DgContainer::class,
+            'PHPExcel_Shared_Escher_DggContainer' => \PhpOffice\PhpSpreadsheet\Shared\Escher\DggContainer::class,
+            'CholeskyDecomposition' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\CholeskyDecomposition::class,
+            'EigenvalueDecomposition' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\EigenvalueDecomposition::class,
+            'PHPExcel_Shared_JAMA_LUDecomposition' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\LUDecomposition::class,
+            'PHPExcel_Shared_JAMA_Matrix' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\Matrix::class,
+            'QRDecomposition' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\QRDecomposition::class,
+            'PHPExcel_Shared_JAMA_QRDecomposition' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\QRDecomposition::class,
+            'SingularValueDecomposition' => \PhpOffice\PhpSpreadsheet\Shared\JAMA\SingularValueDecomposition::class,
+            'PHPExcel_Shared_OLE_ChainedBlockStream' => \PhpOffice\PhpSpreadsheet\Shared\OLE\ChainedBlockStream::class,
+            'PHPExcel_Shared_OLE_PPS' => \PhpOffice\PhpSpreadsheet\Shared\OLE\PPS::class,
+            'PHPExcel_Best_Fit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\BestFit::class,
+            'PHPExcel_Exponential_Best_Fit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\ExponentialBestFit::class,
+            'PHPExcel_Linear_Best_Fit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\LinearBestFit::class,
+            'PHPExcel_Logarithmic_Best_Fit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\LogarithmicBestFit::class,
+            'polynomialBestFit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\PolynomialBestFit::class,
+            'PHPExcel_Polynomial_Best_Fit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\PolynomialBestFit::class,
+            'powerBestFit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\PowerBestFit::class,
+            'PHPExcel_Power_Best_Fit' => \PhpOffice\PhpSpreadsheet\Shared\Trend\PowerBestFit::class,
+            'trendClass' => \PhpOffice\PhpSpreadsheet\Shared\Trend\Trend::class,
+            'PHPExcel_Worksheet_AutoFilter_Column' => \PhpOffice\PhpSpreadsheet\Worksheet\AutoFilter\Column::class,
+            'PHPExcel_Worksheet_Drawing_Shadow' => \PhpOffice\PhpSpreadsheet\Worksheet\Drawing\Shadow::class,
+            'PHPExcel_Writer_OpenDocument_Content' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Content::class,
+            'PHPExcel_Writer_OpenDocument_Meta' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Meta::class,
+            'PHPExcel_Writer_OpenDocument_MetaInf' => \PhpOffice\PhpSpreadsheet\Writer\Ods\MetaInf::class,
+            'PHPExcel_Writer_OpenDocument_Mimetype' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Mimetype::class,
+            'PHPExcel_Writer_OpenDocument_Settings' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Settings::class,
+            'PHPExcel_Writer_OpenDocument_Styles' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Styles::class,
+            'PHPExcel_Writer_OpenDocument_Thumbnails' => \PhpOffice\PhpSpreadsheet\Writer\Ods\Thumbnails::class,
+            'PHPExcel_Writer_OpenDocument_WriterPart' => \PhpOffice\PhpSpreadsheet\Writer\Ods\WriterPart::class,
+            'PHPExcel_Writer_PDF_Core' => \PhpOffice\PhpSpreadsheet\Writer\Pdf::class,
+            'PHPExcel_Writer_PDF_DomPDF' => \PhpOffice\PhpSpreadsheet\Writer\Pdf\Dompdf::class,
+            'PHPExcel_Writer_PDF_mPDF' => \PhpOffice\PhpSpreadsheet\Writer\Pdf\Mpdf::class,
+            'PHPExcel_Writer_PDF_tcPDF' => \PhpOffice\PhpSpreadsheet\Writer\Pdf\Tcpdf::class,
+            'PHPExcel_Writer_Excel5_BIFFwriter' => \PhpOffice\PhpSpreadsheet\Writer\Xls\BIFFwriter::class,
+            'PHPExcel_Writer_Excel5_Escher' => \PhpOffice\PhpSpreadsheet\Writer\Xls\Escher::class,
+            'PHPExcel_Writer_Excel5_Font' => \PhpOffice\PhpSpreadsheet\Writer\Xls\Font::class,
+            'PHPExcel_Writer_Excel5_Parser' => \PhpOffice\PhpSpreadsheet\Writer\Xls\Parser::class,
+            'PHPExcel_Writer_Excel5_Workbook' => \PhpOffice\PhpSpreadsheet\Writer\Xls\Workbook::class,
+            'PHPExcel_Writer_Excel5_Worksheet' => \PhpOffice\PhpSpreadsheet\Writer\Xls\Worksheet::class,
+            'PHPExcel_Writer_Excel5_Xf' => \PhpOffice\PhpSpreadsheet\Writer\Xls\Xf::class,
+            'PHPExcel_Writer_Excel2007_Chart' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Chart::class,
+            'PHPExcel_Writer_Excel2007_Comments' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Comments::class,
+            'PHPExcel_Writer_Excel2007_ContentTypes' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\ContentTypes::class,
+            'PHPExcel_Writer_Excel2007_DocProps' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\DocProps::class,
+            'PHPExcel_Writer_Excel2007_Drawing' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Drawing::class,
+            'PHPExcel_Writer_Excel2007_Rels' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Rels::class,
+            'PHPExcel_Writer_Excel2007_RelsRibbon' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\RelsRibbon::class,
+            'PHPExcel_Writer_Excel2007_RelsVBA' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\RelsVBA::class,
+            'PHPExcel_Writer_Excel2007_StringTable' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\StringTable::class,
+            'PHPExcel_Writer_Excel2007_Style' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Style::class,
+            'PHPExcel_Writer_Excel2007_Theme' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Theme::class,
+            'PHPExcel_Writer_Excel2007_Workbook' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Workbook::class,
+            'PHPExcel_Writer_Excel2007_Worksheet' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Worksheet::class,
+            'PHPExcel_Writer_Excel2007_WriterPart' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx\WriterPart::class,
+            'PHPExcel_CachedObjectStorage_CacheBase' => \PhpOffice\PhpSpreadsheet\Collection\Cells::class,
+            'PHPExcel_CalcEngine_CyclicReferenceStack' => \PhpOffice\PhpSpreadsheet\Calculation\Engine\CyclicReferenceStack::class,
+            'PHPExcel_CalcEngine_Logger' => \PhpOffice\PhpSpreadsheet\Calculation\Engine\Logger::class,
+            'PHPExcel_Calculation_Functions' => \PhpOffice\PhpSpreadsheet\Calculation\Functions::class,
+            'PHPExcel_Calculation_Function' => \PhpOffice\PhpSpreadsheet\Calculation\Category::class,
+            'PHPExcel_Calculation_Database' => \PhpOffice\PhpSpreadsheet\Calculation\Database::class,
+            'PHPExcel_Calculation_DateTime' => \PhpOffice\PhpSpreadsheet\Calculation\DateTime::class,
+            'PHPExcel_Calculation_Engineering' => \PhpOffice\PhpSpreadsheet\Calculation\Engineering::class,
+            'PHPExcel_Calculation_Exception' => \PhpOffice\PhpSpreadsheet\Calculation\Exception::class,
+            'PHPExcel_Calculation_ExceptionHandler' => \PhpOffice\PhpSpreadsheet\Calculation\ExceptionHandler::class,
+            'PHPExcel_Calculation_Financial' => \PhpOffice\PhpSpreadsheet\Calculation\Financial::class,
+            'PHPExcel_Calculation_FormulaParser' => \PhpOffice\PhpSpreadsheet\Calculation\FormulaParser::class,
+            'PHPExcel_Calculation_FormulaToken' => \PhpOffice\PhpSpreadsheet\Calculation\FormulaToken::class,
+            'PHPExcel_Calculation_Logical' => \PhpOffice\PhpSpreadsheet\Calculation\Logical::class,
+            'PHPExcel_Calculation_LookupRef' => \PhpOffice\PhpSpreadsheet\Calculation\LookupRef::class,
+            'PHPExcel_Calculation_MathTrig' => \PhpOffice\PhpSpreadsheet\Calculation\MathTrig::class,
+            'PHPExcel_Calculation_Statistical' => \PhpOffice\PhpSpreadsheet\Calculation\Statistical::class,
+            'PHPExcel_Calculation_TextData' => \PhpOffice\PhpSpreadsheet\Calculation\TextData::class,
+            'PHPExcel_Cell_AdvancedValueBinder' => \PhpOffice\PhpSpreadsheet\Cell\AdvancedValueBinder::class,
+            'PHPExcel_Cell_DataType' => \PhpOffice\PhpSpreadsheet\Cell\DataType::class,
+            'PHPExcel_Cell_DataValidation' => \PhpOffice\PhpSpreadsheet\Cell\DataValidation::class,
+            'PHPExcel_Cell_DefaultValueBinder' => \PhpOffice\PhpSpreadsheet\Cell\DefaultValueBinder::class,
+            'PHPExcel_Cell_Hyperlink' => \PhpOffice\PhpSpreadsheet\Cell\Hyperlink::class,
+            'PHPExcel_Cell_IValueBinder' => \PhpOffice\PhpSpreadsheet\Cell\IValueBinder::class,
+            'PHPExcel_Chart_Axis' => \PhpOffice\PhpSpreadsheet\Chart\Axis::class,
+            'PHPExcel_Chart_DataSeries' => \PhpOffice\PhpSpreadsheet\Chart\DataSeries::class,
+            'PHPExcel_Chart_DataSeriesValues' => \PhpOffice\PhpSpreadsheet\Chart\DataSeriesValues::class,
+            'PHPExcel_Chart_Exception' => \PhpOffice\PhpSpreadsheet\Chart\Exception::class,
+            'PHPExcel_Chart_GridLines' => \PhpOffice\PhpSpreadsheet\Chart\GridLines::class,
+            'PHPExcel_Chart_Layout' => \PhpOffice\PhpSpreadsheet\Chart\Layout::class,
+            'PHPExcel_Chart_Legend' => \PhpOffice\PhpSpreadsheet\Chart\Legend::class,
+            'PHPExcel_Chart_PlotArea' => \PhpOffice\PhpSpreadsheet\Chart\PlotArea::class,
+            'PHPExcel_Properties' => \PhpOffice\PhpSpreadsheet\Chart\Properties::class,
+            'PHPExcel_Chart_Title' => \PhpOffice\PhpSpreadsheet\Chart\Title::class,
+            'PHPExcel_DocumentProperties' => \PhpOffice\PhpSpreadsheet\Document\Properties::class,
+            'PHPExcel_DocumentSecurity' => \PhpOffice\PhpSpreadsheet\Document\Security::class,
+            'PHPExcel_Helper_HTML' => \PhpOffice\PhpSpreadsheet\Helper\Html::class,
+            'PHPExcel_Reader_Abstract' => \PhpOffice\PhpSpreadsheet\Reader\BaseReader::class,
+            'PHPExcel_Reader_CSV' => \PhpOffice\PhpSpreadsheet\Reader\Csv::class,
+            'PHPExcel_Reader_DefaultReadFilter' => \PhpOffice\PhpSpreadsheet\Reader\DefaultReadFilter::class,
+            'PHPExcel_Reader_Excel2003XML' => \PhpOffice\PhpSpreadsheet\Reader\Xml::class,
+            'PHPExcel_Reader_Exception' => \PhpOffice\PhpSpreadsheet\Reader\Exception::class,
+            'PHPExcel_Reader_Gnumeric' => \PhpOffice\PhpSpreadsheet\Reader\Gnumeric::class,
+            'PHPExcel_Reader_HTML' => \PhpOffice\PhpSpreadsheet\Reader\Html::class,
+            'PHPExcel_Reader_IReadFilter' => \PhpOffice\PhpSpreadsheet\Reader\IReadFilter::class,
+            'PHPExcel_Reader_IReader' => \PhpOffice\PhpSpreadsheet\Reader\IReader::class,
+            'PHPExcel_Reader_OOCalc' => \PhpOffice\PhpSpreadsheet\Reader\Ods::class,
+            'PHPExcel_Reader_SYLK' => \PhpOffice\PhpSpreadsheet\Reader\Slk::class,
+            'PHPExcel_Reader_Excel5' => \PhpOffice\PhpSpreadsheet\Reader\Xls::class,
+            'PHPExcel_Reader_Excel2007' => \PhpOffice\PhpSpreadsheet\Reader\Xlsx::class,
+            'PHPExcel_RichText_ITextElement' => \PhpOffice\PhpSpreadsheet\RichText\ITextElement::class,
+            'PHPExcel_RichText_Run' => \PhpOffice\PhpSpreadsheet\RichText\Run::class,
+            'PHPExcel_RichText_TextElement' => \PhpOffice\PhpSpreadsheet\RichText\TextElement::class,
+            'PHPExcel_Shared_CodePage' => \PhpOffice\PhpSpreadsheet\Shared\CodePage::class,
+            'PHPExcel_Shared_Date' => \PhpOffice\PhpSpreadsheet\Shared\Date::class,
+            'PHPExcel_Shared_Drawing' => \PhpOffice\PhpSpreadsheet\Shared\Drawing::class,
+            'PHPExcel_Shared_Escher' => \PhpOffice\PhpSpreadsheet\Shared\Escher::class,
+            'PHPExcel_Shared_File' => \PhpOffice\PhpSpreadsheet\Shared\File::class,
+            'PHPExcel_Shared_Font' => \PhpOffice\PhpSpreadsheet\Shared\Font::class,
+            'PHPExcel_Shared_OLE' => \PhpOffice\PhpSpreadsheet\Shared\OLE::class,
+            'PHPExcel_Shared_OLERead' => \PhpOffice\PhpSpreadsheet\Shared\OLERead::class,
+            'PHPExcel_Shared_PasswordHasher' => \PhpOffice\PhpSpreadsheet\Shared\PasswordHasher::class,
+            'PHPExcel_Shared_String' => \PhpOffice\PhpSpreadsheet\Shared\StringHelper::class,
+            'PHPExcel_Shared_TimeZone' => \PhpOffice\PhpSpreadsheet\Shared\TimeZone::class,
+            'PHPExcel_Shared_XMLWriter' => \PhpOffice\PhpSpreadsheet\Shared\XMLWriter::class,
+            'PHPExcel_Shared_Excel5' => \PhpOffice\PhpSpreadsheet\Shared\Xls::class,
+            'PHPExcel_Style_Alignment' => \PhpOffice\PhpSpreadsheet\Style\Alignment::class,
+            'PHPExcel_Style_Border' => \PhpOffice\PhpSpreadsheet\Style\Border::class,
+            'PHPExcel_Style_Borders' => \PhpOffice\PhpSpreadsheet\Style\Borders::class,
+            'PHPExcel_Style_Color' => \PhpOffice\PhpSpreadsheet\Style\Color::class,
+            'PHPExcel_Style_Conditional' => \PhpOffice\PhpSpreadsheet\Style\Conditional::class,
+            'PHPExcel_Style_Fill' => \PhpOffice\PhpSpreadsheet\Style\Fill::class,
+            'PHPExcel_Style_Font' => \PhpOffice\PhpSpreadsheet\Style\Font::class,
+            'PHPExcel_Style_NumberFormat' => \PhpOffice\PhpSpreadsheet\Style\NumberFormat::class,
+            'PHPExcel_Style_Protection' => \PhpOffice\PhpSpreadsheet\Style\Protection::class,
+            'PHPExcel_Style_Supervisor' => \PhpOffice\PhpSpreadsheet\Style\Supervisor::class,
+            'PHPExcel_Worksheet_AutoFilter' => \PhpOffice\PhpSpreadsheet\Worksheet\AutoFilter::class,
+            'PHPExcel_Worksheet_BaseDrawing' => \PhpOffice\PhpSpreadsheet\Worksheet\BaseDrawing::class,
+            'PHPExcel_Worksheet_CellIterator' => \PhpOffice\PhpSpreadsheet\Worksheet\CellIterator::class,
+            'PHPExcel_Worksheet_Column' => \PhpOffice\PhpSpreadsheet\Worksheet\Column::class,
+            'PHPExcel_Worksheet_ColumnCellIterator' => \PhpOffice\PhpSpreadsheet\Worksheet\ColumnCellIterator::class,
+            'PHPExcel_Worksheet_ColumnDimension' => \PhpOffice\PhpSpreadsheet\Worksheet\ColumnDimension::class,
+            'PHPExcel_Worksheet_ColumnIterator' => \PhpOffice\PhpSpreadsheet\Worksheet\ColumnIterator::class,
+            'PHPExcel_Worksheet_Drawing' => \PhpOffice\PhpSpreadsheet\Worksheet\Drawing::class,
+            'PHPExcel_Worksheet_HeaderFooter' => \PhpOffice\PhpSpreadsheet\Worksheet\HeaderFooter::class,
+            'PHPExcel_Worksheet_HeaderFooterDrawing' => \PhpOffice\PhpSpreadsheet\Worksheet\HeaderFooterDrawing::class,
+            'PHPExcel_WorksheetIterator' => \PhpOffice\PhpSpreadsheet\Worksheet\Iterator::class,
+            'PHPExcel_Worksheet_MemoryDrawing' => \PhpOffice\PhpSpreadsheet\Worksheet\MemoryDrawing::class,
+            'PHPExcel_Worksheet_PageMargins' => \PhpOffice\PhpSpreadsheet\Worksheet\PageMargins::class,
+            'PHPExcel_Worksheet_PageSetup' => \PhpOffice\PhpSpreadsheet\Worksheet\PageSetup::class,
+            'PHPExcel_Worksheet_Protection' => \PhpOffice\PhpSpreadsheet\Worksheet\Protection::class,
+            'PHPExcel_Worksheet_Row' => \PhpOffice\PhpSpreadsheet\Worksheet\Row::class,
+            'PHPExcel_Worksheet_RowCellIterator' => \PhpOffice\PhpSpreadsheet\Worksheet\RowCellIterator::class,
+            'PHPExcel_Worksheet_RowDimension' => \PhpOffice\PhpSpreadsheet\Worksheet\RowDimension::class,
+            'PHPExcel_Worksheet_RowIterator' => \PhpOffice\PhpSpreadsheet\Worksheet\RowIterator::class,
+            'PHPExcel_Worksheet_SheetView' => \PhpOffice\PhpSpreadsheet\Worksheet\SheetView::class,
+            'PHPExcel_Writer_Abstract' => \PhpOffice\PhpSpreadsheet\Writer\BaseWriter::class,
+            'PHPExcel_Writer_CSV' => \PhpOffice\PhpSpreadsheet\Writer\Csv::class,
+            'PHPExcel_Writer_Exception' => \PhpOffice\PhpSpreadsheet\Writer\Exception::class,
+            'PHPExcel_Writer_HTML' => \PhpOffice\PhpSpreadsheet\Writer\Html::class,
+            'PHPExcel_Writer_IWriter' => \PhpOffice\PhpSpreadsheet\Writer\IWriter::class,
+            'PHPExcel_Writer_OpenDocument' => \PhpOffice\PhpSpreadsheet\Writer\Ods::class,
+            'PHPExcel_Writer_PDF' => \PhpOffice\PhpSpreadsheet\Writer\Pdf::class,
+            'PHPExcel_Writer_Excel5' => \PhpOffice\PhpSpreadsheet\Writer\Xls::class,
+            'PHPExcel_Writer_Excel2007' => \PhpOffice\PhpSpreadsheet\Writer\Xlsx::class,
+            'PHPExcel_CachedObjectStorageFactory' => \PhpOffice\PhpSpreadsheet\Collection\CellsFactory::class,
+            'PHPExcel_Calculation' => \PhpOffice\PhpSpreadsheet\Calculation\Calculation::class,
+            'PHPExcel_Cell' => \PhpOffice\PhpSpreadsheet\Cell\Cell::class,
+            'PHPExcel_Chart' => \PhpOffice\PhpSpreadsheet\Chart\Chart::class,
+            'PHPExcel_Comment' => \PhpOffice\PhpSpreadsheet\Comment::class,
+            'PHPExcel_Exception' => \PhpOffice\PhpSpreadsheet\Exception::class,
+            'PHPExcel_HashTable' => \PhpOffice\PhpSpreadsheet\HashTable::class,
+            'PHPExcel_IComparable' => \PhpOffice\PhpSpreadsheet\IComparable::class,
+            'PHPExcel_IOFactory' => \PhpOffice\PhpSpreadsheet\IOFactory::class,
+            'PHPExcel_NamedRange' => \PhpOffice\PhpSpreadsheet\NamedRange::class,
+            'PHPExcel_ReferenceHelper' => \PhpOffice\PhpSpreadsheet\ReferenceHelper::class,
+            'PHPExcel_RichText' => \PhpOffice\PhpSpreadsheet\RichText\RichText::class,
+            'PHPExcel_Settings' => \PhpOffice\PhpSpreadsheet\Settings::class,
+            'PHPExcel_Style' => \PhpOffice\PhpSpreadsheet\Style\Style::class,
+            'PHPExcel_Worksheet' => \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet::class,
+        ];
+
+        $methods = [
+            'MINUTEOFHOUR' => 'MINUTE',
+            'SECONDOFMINUTE' => 'SECOND',
+            'DAYOFWEEK' => 'WEEKDAY',
+            'WEEKOFYEAR' => 'WEEKNUM',
+            'ExcelToPHPObject' => 'excelToDateTimeObject',
+            'ExcelToPHP' => 'excelToTimestamp',
+            'FormattedPHPToExcel' => 'formattedPHPToExcel',
+            'Cell::absoluteCoordinate' => 'Coordinate::absoluteCoordinate',
+            'Cell::absoluteReference' => 'Coordinate::absoluteReference',
+            'Cell::buildRange' => 'Coordinate::buildRange',
+            'Cell::columnIndexFromString' => 'Coordinate::columnIndexFromString',
+            'Cell::coordinateFromString' => 'Coordinate::coordinateFromString',
+            'Cell::extractAllCellReferencesInRange' => 'Coordinate::extractAllCellReferencesInRange',
+            'Cell::getRangeBoundaries' => 'Coordinate::getRangeBoundaries',
+            'Cell::mergeRangesInCollection' => 'Coordinate::mergeRangesInCollection',
+            'Cell::rangeBoundaries' => 'Coordinate::rangeBoundaries',
+            'Cell::rangeDimension' => 'Coordinate::rangeDimension',
+            'Cell::splitRange' => 'Coordinate::splitRange',
+            'Cell::stringFromColumnIndex' => 'Coordinate::stringFromColumnIndex',
+        ];
+
+        // Keep '\' prefix for class names
+        $prefixedClasses = [];
+        foreach ($classes as $key => &$value) {
+            $value = str_replace('PhpOffice\\', '\\PhpOffice\\', $value);
+            $prefixedClasses['\\' . $key] = $value;
+        }
+        $mapping = $prefixedClasses + $classes + $methods;
+
+        return $mapping;
+    }
+
+    /**
+     * Search in all files in given directory.
+     *
+     * @param string $path
+     */
+    private function recursiveReplace($path)
+    {
+        $patterns = [
+            '/*.md',
+            '/*.txt',
+            '/*.TXT',
+            '/*.php',
+            '/*.phpt',
+            '/*.php3',
+            '/*.php4',
+            '/*.php5',
+            '/*.phtml',
+        ];
+
+        foreach ($patterns as $pattern) {
+            foreach (glob($path . $pattern) as $file) {
+                if (strpos($path, '/vendor/') !== false) {
+                    echo $file . " skipped\n";
+
+                    continue;
+                }
+                $original = file_get_contents($file);
+                $converted = $this->replace($original);
+
+                if ($original !== $converted) {
+                    echo $file . " converted\n";
+                    file_put_contents($file, $converted);
+                }
+            }
+        }
+
+        // Do the recursion in subdirectory
+        foreach (glob($path . '/*', GLOB_ONLYDIR) as $subpath) {
+            if (strpos($subpath, $path . '/') === 0) {
+                $this->recursiveReplace($subpath);
+            }
+        }
+    }
+
+    public function migrate()
+    {
+        $path = realpath(getcwd());
+        echo 'This will search and replace recursively in ' . $path . PHP_EOL;
+        echo 'You MUST backup your files first, or you risk losing data.' . PHP_EOL;
+        echo 'Are you sure ? (y/n)';
+
+        $confirm = fread(STDIN, 1);
+        if ($confirm === 'y') {
+            $this->recursiveReplace($path);
+        }
+    }
+
+    /**
+     * Migrate the given code from PHPExcel to PhpSpreadsheet.
+     *
+     * @param string $original
+     *
+     * @return string
+     */
+    public function replace($original)
+    {
+        $converted = str_replace($this->from, $this->to, $original);
+
+        // The string "PHPExcel" gets special treatment because of how common it might be.
+        // This regex requires a word boundary around the string, and it can't be
+        // preceded by $ or -> (goal is to filter out cases where a variable is named $PHPExcel or similar)
+        $converted = preg_replace('~(?<!\$|->)(\b|\\\\)PHPExcel\b~', '\\' . \PhpOffice\PhpSpreadsheet\Spreadsheet::class, $converted);
+
+        return $converted;
+    }
+}

PhpOffice/PhpSpreadsheet/Helper/Sample.php

@@ -0,0 +1,230 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Helper;
+
+use PhpOffice\PhpSpreadsheet\IOFactory;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+use PhpOffice\PhpSpreadsheet\Writer\IWriter;
+use PhpOffice\PhpSpreadsheet\Writer\Pdf;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use RecursiveRegexIterator;
+use ReflectionClass;
+use RegexIterator;
+
+/**
+ * Helper class to be used in sample code.
+ */
+class Sample
+{
+    /**
+     * Returns whether we run on CLI or browser.
+     *
+     * @return bool
+     */
+    public function isCli()
+    {
+        return PHP_SAPI === 'cli';
+    }
+
+    /**
+     * Return the filename currently being executed.
+     *
+     * @return string
+     */
+    public function getScriptFilename()
+    {
+        return basename($_SERVER['SCRIPT_FILENAME'], '.php');
+    }
+
+    /**
+     * Whether we are executing the index page.
+     *
+     * @return bool
+     */
+    public function isIndex()
+    {
+        return $this->getScriptFilename() === 'index';
+    }
+
+    /**
+     * Return the page title.
+     *
+     * @return string
+     */
+    public function getPageTitle()
+    {
+        return $this->isIndex() ? 'PHPSpreadsheet' : $this->getScriptFilename();
+    }
+
+    /**
+     * Return the page heading.
+     *
+     * @return string
+     */
+    public function getPageHeading()
+    {
+        return $this->isIndex() ? '' : '<h1>' . str_replace('_', ' ', $this->getScriptFilename()) . '</h1>';
+    }
+
+    /**
+     * Returns an array of all known samples.
+     *
+     * @return string[] [$name => $path]
+     */
+    public function getSamples()
+    {
+        // Populate samples
+        $baseDir = realpath(__DIR__ . '/../../../samples');
+        $directory = new RecursiveDirectoryIterator($baseDir);
+        $iterator = new RecursiveIteratorIterator($directory);
+        $regex = new RegexIterator($iterator, '/^.+\.php$/', RecursiveRegexIterator::GET_MATCH);
+
+        $files = [];
+        foreach ($regex as $file) {
+            $file = str_replace(str_replace('\\', '/', $baseDir) . '/', '', str_replace('\\', '/', $file[0]));
+            $info = pathinfo($file);
+            $category = str_replace('_', ' ', $info['dirname']);
+            $name = str_replace('_', ' ', preg_replace('/(|\.php)/', '', $info['filename']));
+            if (!in_array($category, ['.', 'boostrap', 'templates'])) {
+                if (!isset($files[$category])) {
+                    $files[$category] = [];
+                }
+                $files[$category][$name] = $file;
+            }
+        }
+
+        // Sort everything
+        ksort($files);
+        foreach ($files as &$f) {
+            asort($f);
+        }
+
+        return $files;
+    }
+
+    /**
+     * Write documents.
+     *
+     * @param Spreadsheet $spreadsheet
+     * @param string $filename
+     * @param string[] $writers
+     */
+    public function write(Spreadsheet $spreadsheet, $filename, array $writers = ['Xlsx', 'Xls'])
+    {
+        // Set active sheet index to the first sheet, so Excel opens this as the first sheet
+        $spreadsheet->setActiveSheetIndex(0);
+
+        // Write documents
+        foreach ($writers as $writerType) {
+            $path = $this->getFilename($filename, mb_strtolower($writerType));
+            $writer = IOFactory::createWriter($spreadsheet, $writerType);
+            if ($writer instanceof Pdf) {
+                // PDF writer needs temporary directory
+                $tempDir = $this->getTemporaryFolder();
+                $writer->setTempDir($tempDir);
+            }
+            $callStartTime = microtime(true);
+            $writer->save($path);
+            $this->logWrite($writer, $path, $callStartTime);
+        }
+
+        $this->logEndingNotes();
+    }
+
+    /**
+     * Returns the temporary directory and make sure it exists.
+     *
+     * @return string
+     */
+    private function getTemporaryFolder()
+    {
+        $tempFolder = sys_get_temp_dir() . '/phpspreadsheet';
+        if (!is_dir($tempFolder)) {
+            if (!mkdir($tempFolder) && !is_dir($tempFolder)) {
+                throw new \RuntimeException(sprintf('Directory "%s" was not created', $tempFolder));
+            }
+        }
+
+        return $tempFolder;
+    }
+
+    /**
+     * Returns the filename that should be used for sample output.
+     *
+     * @param string $filename
+     * @param string $extension
+     *
+     * @return string
+     */
+    public function getFilename($filename, $extension = 'xlsx')
+    {
+        $originalExtension = pathinfo($filename, PATHINFO_EXTENSION);
+
+        return $this->getTemporaryFolder() . '/' . str_replace('.' . $originalExtension, '.' . $extension, basename($filename));
+    }
+
+    /**
+     * Return a random temporary file name.
+     *
+     * @param string $extension
+     *
+     * @return string
+     */
+    public function getTemporaryFilename($extension = 'xlsx')
+    {
+        $temporaryFilename = tempnam($this->getTemporaryFolder(), 'phpspreadsheet-');
+        unlink($temporaryFilename);
+
+        return $temporaryFilename . '.' . $extension;
+    }
+
+    public function log($message)
+    {
+        $eol = $this->isCli() ? PHP_EOL : '<br />';
+        echo date('H:i:s ') . $message . $eol;
+    }
+
+    /**
+     * Log ending notes.
+     */
+    public function logEndingNotes()
+    {
+        // Do not show execution time for index
+        $this->log('Peak memory usage: ' . (memory_get_peak_usage(true) / 1024 / 1024) . 'MB');
+    }
+
+    /**
+     * Log a line about the write operation.
+     *
+     * @param IWriter $writer
+     * @param string $path
+     * @param float $callStartTime
+     */
+    public function logWrite(IWriter $writer, $path, $callStartTime)
+    {
+        $callEndTime = microtime(true);
+        $callTime = $callEndTime - $callStartTime;
+        $reflection = new ReflectionClass($writer);
+        $format = $reflection->getShortName();
+        $message = "Write {$format} format to <code>{$path}</code>  in " . sprintf('%.4f', $callTime) . ' seconds';
+
+        $this->log($message);
+    }
+
+    /**
+     * Log a line about the read operation.
+     *
+     * @param string $format
+     * @param string $path
+     * @param float $callStartTime
+     */
+    public function logRead($format, $path, $callStartTime)
+    {
+        $callEndTime = microtime(true);
+        $callTime = $callEndTime - $callStartTime;
+        $message = "Read {$format} format from <code>{$path}</code>  in " . sprintf('%.4f', $callTime) . ' seconds';
+
+        $this->log($message);
+    }
+}

PhpOffice/PhpSpreadsheet/IComparable.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet;
+
+interface IComparable
+{
+    /**
+     * Get hash code.
+     *
+     * @return string Hash code
+     */
+    public function getHashCode();
+}

PhpOffice/PhpSpreadsheet/IOFactory.php

@@ -0,0 +1,230 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet;
+
+use PhpOffice\PhpSpreadsheet\Shared\File;
+
+/**
+ * Factory to create readers and writers easily.
+ *
+ * It is not required to use this class, but it should make it easier to read and write files.
+ * Especially for reading files with an unknown format.
+ */
+abstract class IOFactory
+{
+    private static $readers = [
+        'Xlsx' => Reader\Xlsx::class,
+        'Xls' => Reader\Xls::class,
+        'Xml' => Reader\Xml::class,
+        'Ods' => Reader\Ods::class,
+        'Slk' => Reader\Slk::class,
+        'Gnumeric' => Reader\Gnumeric::class,
+        'Html' => Reader\Html::class,
+        'Csv' => Reader\Csv::class,
+    ];
+
+    private static $writers = [
+        'Xls' => Writer\Xls::class,
+        'Xlsx' => Writer\Xlsx::class,
+        'Ods' => Writer\Ods::class,
+        'Csv' => Writer\Csv::class,
+        'Html' => Writer\Html::class,
+        'Tcpdf' => Writer\Pdf\Tcpdf::class,
+        'Dompdf' => Writer\Pdf\Dompdf::class,
+        'Mpdf' => Writer\Pdf\Mpdf::class,
+    ];
+
+    /**
+     * Create Writer\IWriter.
+     *
+     * @param Spreadsheet $spreadsheet
+     * @param string $writerType Example: Xlsx
+     *
+     * @throws Writer\Exception
+     *
+     * @return Writer\IWriter
+     */
+    public static function createWriter(Spreadsheet $spreadsheet, $writerType)
+    {
+        if (!isset(self::$writers[$writerType])) {
+            throw new Writer\Exception("No writer found for type $writerType");
+        }
+
+        // Instantiate writer
+        $className = self::$writers[$writerType];
+        $writer = new $className($spreadsheet);
+
+        return $writer;
+    }
+
+    /**
+     * Create Reader\IReader.
+     *
+     * @param string $readerType Example: Xlsx
+     *
+     * @throws Reader\Exception
+     *
+     * @return Reader\IReader
+     */
+    public static function createReader($readerType)
+    {
+        if (!isset(self::$readers[$readerType])) {
+            throw new Reader\Exception("No reader found for type $readerType");
+        }
+
+        // Instantiate reader
+        $className = self::$readers[$readerType];
+        $reader = new $className();
+
+        return $reader;
+    }
+
+    /**
+     * Loads Spreadsheet from file using automatic Reader\IReader resolution.
+     *
+     * @param string $pFilename The name of the spreadsheet file
+     *
+     * @throws Reader\Exception
+     *
+     * @return Spreadsheet
+     */
+    public static function load($pFilename)
+    {
+        $reader = self::createReaderForFile($pFilename);
+
+        return $reader->load($pFilename);
+    }
+
+    /**
+     * Identify file type using automatic Reader\IReader resolution.
+     *
+     * @param string $pFilename The name of the spreadsheet file to identify
+     *
+     * @throws Reader\Exception
+     *
+     * @return string
+     */
+    public static function identify($pFilename)
+    {
+        $reader = self::createReaderForFile($pFilename);
+        $className = get_class($reader);
+        $classType = explode('\\', $className);
+        unset($reader);
+
+        return array_pop($classType);
+    }
+
+    /**
+     * Create Reader\IReader for file using automatic Reader\IReader resolution.
+     *
+     * @param string $filename The name of the spreadsheet file
+     *
+     * @throws Reader\Exception
+     *
+     * @return Reader\IReader
+     */
+    public static function createReaderForFile($filename)
+    {
+        File::assertFile($filename);
+
+        // First, lucky guess by inspecting file extension
+        $guessedReader = self::getReaderTypeFromExtension($filename);
+        if ($guessedReader !== null) {
+            $reader = self::createReader($guessedReader);
+
+            // Let's see if we are lucky
+            if (isset($reader) && $reader->canRead($filename)) {
+                return $reader;
+            }
+        }
+
+        // If we reach here then "lucky guess" didn't give any result
+        // Try walking through all the options in self::$autoResolveClasses
+        foreach (self::$readers as $type => $class) {
+            //    Ignore our original guess, we know that won't work
+            if ($type !== $guessedReader) {
+                $reader = self::createReader($type);
+                if ($reader->canRead($filename)) {
+                    return $reader;
+                }
+            }
+        }
+
+        throw new Reader\Exception('Unable to identify a reader for this file');
+    }
+
+    /**
+     * Guess a reader type from the file extension, if any.
+     *
+     * @param string $filename
+     *
+     * @return null|string
+     */
+    private static function getReaderTypeFromExtension($filename)
+    {
+        $pathinfo = pathinfo($filename);
+        if (!isset($pathinfo['extension'])) {
+            return null;
+        }
+
+        switch (strtolower($pathinfo['extension'])) {
+            case 'xlsx': // Excel (OfficeOpenXML) Spreadsheet
+            case 'xlsm': // Excel (OfficeOpenXML) Macro Spreadsheet (macros will be discarded)
+            case 'xltx': // Excel (OfficeOpenXML) Template
+            case 'xltm': // Excel (OfficeOpenXML) Macro Template (macros will be discarded)
+                return 'Xlsx';
+            case 'xls': // Excel (BIFF) Spreadsheet
+            case 'xlt': // Excel (BIFF) Template
+                return 'Xls';
+            case 'ods': // Open/Libre Offic Calc
+            case 'ots': // Open/Libre Offic Calc Template
+                return 'Ods';
+            case 'slk':
+                return 'Slk';
+            case 'xml': // Excel 2003 SpreadSheetML
+                return 'Xml';
+            case 'gnumeric':
+                return 'Gnumeric';
+            case 'htm':
+            case 'html':
+                return 'Html';
+            case 'csv':
+                // Do nothing
+                // We must not try to use CSV reader since it loads
+                // all files including Excel files etc.
+                return null;
+            default:
+                return null;
+        }
+    }
+
+    /**
+     * Register a writer with its type and class name.
+     *
+     * @param string $writerType
+     * @param string $writerClass
+     */
+    public static function registerWriter($writerType, $writerClass)
+    {
+        if (!is_a($writerClass, Writer\IWriter::class, true)) {
+            throw new Writer\Exception('Registered writers must implement ' . Writer\IWriter::class);
+        }
+
+        self::$writers[$writerType] = $writerClass;
+    }
+
+    /**
+     * Register a reader with its type and class name.
+     *
+     * @param string $readerType
+     * @param string $readerClass
+     */
+    public static function registerReader($readerType, $readerClass)
+    {
+        if (!is_a($readerClass, Reader\IReader::class, true)) {
+            throw new Reader\Exception('Registered readers must implement ' . Reader\IReader::class);
+        }
+
+        self::$readers[$readerType] = $readerClass;
+    }
+}

PhpOffice/PhpSpreadsheet/NamedRange.php

@@ -0,0 +1,240 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet;
+
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class NamedRange
+{
+    /**
+     * Range name.
+     *
+     * @var string
+     */
+    private $name;
+
+    /**
+     * Worksheet on which the named range can be resolved.
+     *
+     * @var Worksheet
+     */
+    private $worksheet;
+
+    /**
+     * Range of the referenced cells.
+     *
+     * @var string
+     */
+    private $range;
+
+    /**
+     * Is the named range local? (i.e. can only be used on $this->worksheet).
+     *
+     * @var bool
+     */
+    private $localOnly;
+
+    /**
+     * Scope.
+     *
+     * @var Worksheet
+     */
+    private $scope;
+
+    /**
+     * Create a new NamedRange.
+     *
+     * @param string $pName
+     * @param Worksheet $pWorksheet
+     * @param string $pRange
+     * @param bool $pLocalOnly
+     * @param null|Worksheet $pScope Scope. Only applies when $pLocalOnly = true. Null for global scope.
+     *
+     * @throws Exception
+     */
+    public function __construct($pName, Worksheet $pWorksheet, $pRange = 'A1', $pLocalOnly = false, $pScope = null)
+    {
+        // Validate data
+        if (($pName === null) || ($pWorksheet === null) || ($pRange === null)) {
+            throw new Exception('Parameters can not be null.');
+        }
+
+        // Set local members
+        $this->name = $pName;
+        $this->worksheet = $pWorksheet;
+        $this->range = $pRange;
+        $this->localOnly = $pLocalOnly;
+        $this->scope = ($pLocalOnly == true) ? (($pScope == null) ? $pWorksheet : $pScope) : null;
+    }
+
+    /**
+     * Get name.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Set name.
+     *
+     * @param string $value
+     *
+     * @return NamedRange
+     */
+    public function setName($value)
+    {
+        if ($value !== null) {
+            // Old title
+            $oldTitle = $this->name;
+
+            // Re-attach
+            if ($this->worksheet !== null) {
+                $this->worksheet->getParent()->removeNamedRange($this->name, $this->worksheet);
+            }
+            $this->name = $value;
+
+            if ($this->worksheet !== null) {
+                $this->worksheet->getParent()->addNamedRange($this);
+            }
+
+            // New title
+            $newTitle = $this->name;
+            ReferenceHelper::getInstance()->updateNamedFormulas($this->worksheet->getParent(), $oldTitle, $newTitle);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get worksheet.
+     *
+     * @return Worksheet
+     */
+    public function getWorksheet()
+    {
+        return $this->worksheet;
+    }
+
+    /**
+     * Set worksheet.
+     *
+     * @param Worksheet $value
+     *
+     * @return NamedRange
+     */
+    public function setWorksheet(Worksheet $value = null)
+    {
+        if ($value !== null) {
+            $this->worksheet = $value;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get range.
+     *
+     * @return string
+     */
+    public function getRange()
+    {
+        return $this->range;
+    }
+
+    /**
+     * Set range.
+     *
+     * @param string $value
+     *
+     * @return NamedRange
+     */
+    public function setRange($value)
+    {
+        if ($value !== null) {
+            $this->range = $value;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get localOnly.
+     *
+     * @return bool
+     */
+    public function getLocalOnly()
+    {
+        return $this->localOnly;
+    }
+
+    /**
+     * Set localOnly.
+     *
+     * @param bool $value
+     *
+     * @return NamedRange
+     */
+    public function setLocalOnly($value)
+    {
+        $this->localOnly = $value;
+        $this->scope = $value ? $this->worksheet : null;
+
+        return $this;
+    }
+
+    /**
+     * Get scope.
+     *
+     * @return null|Worksheet
+     */
+    public function getScope()
+    {
+        return $this->scope;
+    }
+
+    /**
+     * Set scope.
+     *
+     * @param null|Worksheet $value
+     *
+     * @return NamedRange
+     */
+    public function setScope(Worksheet $value = null)
+    {
+        $this->scope = $value;
+        $this->localOnly = $value != null;
+
+        return $this;
+    }
+
+    /**
+     * Resolve a named range to a regular cell range.
+     *
+     * @param string $pNamedRange Named range
+     * @param null|Worksheet $pSheet Scope. Use null for global scope
+     *
+     * @return NamedRange
+     */
+    public static function resolveRange($pNamedRange, Worksheet $pSheet)
+    {
+        return $pSheet->getParent()->getNamedRange($pNamedRange, $pSheet);
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Reader/BaseReader.php

@@ -0,0 +1,160 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader;
+
+use PhpOffice\PhpSpreadsheet\Reader\Security\XmlScanner;
+use PhpOffice\PhpSpreadsheet\Shared\File;
+
+abstract class BaseReader implements IReader
+{
+    /**
+     * Read data only?
+     * Identifies whether the Reader should only read data values for cells, and ignore any formatting information;
+     *        or whether it should read both data and formatting.
+     *
+     * @var bool
+     */
+    protected $readDataOnly = false;
+
+    /**
+     * Read empty cells?
+     * Identifies whether the Reader should read data values for cells all cells, or should ignore cells containing
+     *         null value or empty string.
+     *
+     * @var bool
+     */
+    protected $readEmptyCells = true;
+
+    /**
+     * Read charts that are defined in the workbook?
+     * Identifies whether the Reader should read the definitions for any charts that exist in the workbook;.
+     *
+     * @var bool
+     */
+    protected $includeCharts = false;
+
+    /**
+     * Restrict which sheets should be loaded?
+     * This property holds an array of worksheet names to be loaded. If null, then all worksheets will be loaded.
+     *
+     * @var array of string
+     */
+    protected $loadSheetsOnly;
+
+    /**
+     * IReadFilter instance.
+     *
+     * @var IReadFilter
+     */
+    protected $readFilter;
+
+    protected $fileHandle;
+
+    /**
+     * @var XmlScanner
+     */
+    protected $securityScanner;
+
+    public function __construct()
+    {
+        $this->readFilter = new DefaultReadFilter();
+    }
+
+    public function getReadDataOnly()
+    {
+        return $this->readDataOnly;
+    }
+
+    public function setReadDataOnly($pValue)
+    {
+        $this->readDataOnly = (bool) $pValue;
+
+        return $this;
+    }
+
+    public function getReadEmptyCells()
+    {
+        return $this->readEmptyCells;
+    }
+
+    public function setReadEmptyCells($pValue)
+    {
+        $this->readEmptyCells = (bool) $pValue;
+
+        return $this;
+    }
+
+    public function getIncludeCharts()
+    {
+        return $this->includeCharts;
+    }
+
+    public function setIncludeCharts($pValue)
+    {
+        $this->includeCharts = (bool) $pValue;
+
+        return $this;
+    }
+
+    public function getLoadSheetsOnly()
+    {
+        return $this->loadSheetsOnly;
+    }
+
+    public function setLoadSheetsOnly($value)
+    {
+        if ($value === null) {
+            return $this->setLoadAllSheets();
+        }
+
+        $this->loadSheetsOnly = is_array($value) ? $value : [$value];
+
+        return $this;
+    }
+
+    public function setLoadAllSheets()
+    {
+        $this->loadSheetsOnly = null;
+
+        return $this;
+    }
+
+    public function getReadFilter()
+    {
+        return $this->readFilter;
+    }
+
+    public function setReadFilter(IReadFilter $pValue)
+    {
+        $this->readFilter = $pValue;
+
+        return $this;
+    }
+
+    public function getSecurityScanner()
+    {
+        if (property_exists($this, 'securityScanner')) {
+            return $this->securityScanner;
+        }
+
+        return null;
+    }
+
+    /**
+     * Open file for reading.
+     *
+     * @param string $pFilename
+     *
+     * @throws Exception
+     */
+    protected function openFile($pFilename)
+    {
+        File::assertFile($pFilename);
+
+        // Open file
+        $this->fileHandle = fopen($pFilename, 'r');
+        if ($this->fileHandle === false) {
+            throw new Exception('Could not open file ' . $pFilename . ' for reading.');
+        }
+    }
+}

PhpOffice/PhpSpreadsheet/Reader/Csv.php

@@ -0,0 +1,563 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader;
+
+use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+class Csv extends BaseReader
+{
+    /**
+     * Input encoding.
+     *
+     * @var string
+     */
+    private $inputEncoding = 'UTF-8';
+
+    /**
+     * Delimiter.
+     *
+     * @var string
+     */
+    private $delimiter;
+
+    /**
+     * Enclosure.
+     *
+     * @var string
+     */
+    private $enclosure = '"';
+
+    /**
+     * Sheet index to read.
+     *
+     * @var int
+     */
+    private $sheetIndex = 0;
+
+    /**
+     * Load rows contiguously.
+     *
+     * @var bool
+     */
+    private $contiguous = false;
+
+    /**
+     * Row counter for loading rows contiguously.
+     *
+     * @var int
+     */
+    private $contiguousRow = -1;
+
+    /**
+     * The character that can escape the enclosure.
+     *
+     * @var string
+     */
+    private $escapeCharacter = '\\';
+
+    /**
+     * Create a new CSV Reader instance.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    /**
+     * Set input encoding.
+     *
+     * @param string $pValue Input encoding, eg: 'UTF-8'
+     *
+     * @return Csv
+     */
+    public function setInputEncoding($pValue)
+    {
+        $this->inputEncoding = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get input encoding.
+     *
+     * @return string
+     */
+    public function getInputEncoding()
+    {
+        return $this->inputEncoding;
+    }
+
+    /**
+     * Move filepointer past any BOM marker.
+     */
+    protected function skipBOM()
+    {
+        rewind($this->fileHandle);
+
+        switch ($this->inputEncoding) {
+            case 'UTF-8':
+                fgets($this->fileHandle, 4) == "\xEF\xBB\xBF" ?
+                    fseek($this->fileHandle, 3) : fseek($this->fileHandle, 0);
+
+                break;
+            case 'UTF-16LE':
+                fgets($this->fileHandle, 3) == "\xFF\xFE" ?
+                    fseek($this->fileHandle, 2) : fseek($this->fileHandle, 0);
+
+                break;
+            case 'UTF-16BE':
+                fgets($this->fileHandle, 3) == "\xFE\xFF" ?
+                    fseek($this->fileHandle, 2) : fseek($this->fileHandle, 0);
+
+                break;
+            case 'UTF-32LE':
+                fgets($this->fileHandle, 5) == "\xFF\xFE\x00\x00" ?
+                    fseek($this->fileHandle, 4) : fseek($this->fileHandle, 0);
+
+                break;
+            case 'UTF-32BE':
+                fgets($this->fileHandle, 5) == "\x00\x00\xFE\xFF" ?
+                    fseek($this->fileHandle, 4) : fseek($this->fileHandle, 0);
+
+                break;
+            default:
+                break;
+        }
+    }
+
+    /**
+     * Identify any separator that is explicitly set in the file.
+     */
+    protected function checkSeparator()
+    {
+        $line = fgets($this->fileHandle);
+        if ($line === false) {
+            return;
+        }
+
+        if ((strlen(trim($line, "\r\n")) == 5) && (stripos($line, 'sep=') === 0)) {
+            $this->delimiter = substr($line, 4, 1);
+
+            return;
+        }
+
+        $this->skipBOM();
+    }
+
+    /**
+     * Infer the separator if it isn't explicitly set in the file or specified by the user.
+     */
+    protected function inferSeparator()
+    {
+        if ($this->delimiter !== null) {
+            return;
+        }
+
+        $potentialDelimiters = [',', ';', "\t", '|', ':', ' ', '~'];
+        $counts = [];
+        foreach ($potentialDelimiters as $delimiter) {
+            $counts[$delimiter] = [];
+        }
+
+        // Count how many times each of the potential delimiters appears in each line
+        $numberLines = 0;
+        while (($line = $this->getNextLine()) !== false && (++$numberLines < 1000)) {
+            $countLine = [];
+            for ($i = strlen($line) - 1; $i >= 0; --$i) {
+                $char = $line[$i];
+                if (isset($counts[$char])) {
+                    if (!isset($countLine[$char])) {
+                        $countLine[$char] = 0;
+                    }
+                    ++$countLine[$char];
+                }
+            }
+            foreach ($potentialDelimiters as $delimiter) {
+                $counts[$delimiter][] = $countLine[$delimiter]
+                    ?? 0;
+            }
+        }
+
+        // If number of lines is 0, nothing to infer : fall back to the default
+        if ($numberLines === 0) {
+            $this->delimiter = reset($potentialDelimiters);
+            $this->skipBOM();
+
+            return;
+        }
+
+        // Calculate the mean square deviations for each delimiter (ignoring delimiters that haven't been found consistently)
+        $meanSquareDeviations = [];
+        $middleIdx = floor(($numberLines - 1) / 2);
+
+        foreach ($potentialDelimiters as $delimiter) {
+            $series = $counts[$delimiter];
+            sort($series);
+
+            $median = ($numberLines % 2)
+                ? $series[$middleIdx]
+                : ($series[$middleIdx] + $series[$middleIdx + 1]) / 2;
+
+            if ($median === 0) {
+                continue;
+            }
+
+            $meanSquareDeviations[$delimiter] = array_reduce(
+                $series,
+                function ($sum, $value) use ($median) {
+                    return $sum + pow($value - $median, 2);
+                }
+            ) / count($series);
+        }
+
+        // ... and pick the delimiter with the smallest mean square deviation (in case of ties, the order in potentialDelimiters is respected)
+        $min = INF;
+        foreach ($potentialDelimiters as $delimiter) {
+            if (!isset($meanSquareDeviations[$delimiter])) {
+                continue;
+            }
+
+            if ($meanSquareDeviations[$delimiter] < $min) {
+                $min = $meanSquareDeviations[$delimiter];
+                $this->delimiter = $delimiter;
+            }
+        }
+
+        // If no delimiter could be detected, fall back to the default
+        if ($this->delimiter === null) {
+            $this->delimiter = reset($potentialDelimiters);
+        }
+
+        $this->skipBOM();
+    }
+
+    /**
+     * Get the next full line from the file.
+     *
+     * @param string $line
+     *
+     * @return bool|string
+     */
+    private function getNextLine($line = '')
+    {
+        // Get the next line in the file
+        $newLine = fgets($this->fileHandle);
+
+        // Return false if there is no next line
+        if ($newLine === false) {
+            return false;
+        }
+
+        // Add the new line to the line passed in
+        $line = $line . $newLine;
+
+        // Drop everything that is enclosed to avoid counting false positives in enclosures
+        $enclosure = '(?<!' . preg_quote($this->escapeCharacter, '/') . ')'
+            . preg_quote($this->enclosure, '/');
+        $line = preg_replace('/(' . $enclosure . '.*' . $enclosure . ')/Us', '', $line);
+
+        // See if we have any enclosures left in the line
+        // if we still have an enclosure then we need to read the next line as well
+        if (preg_match('/(' . $enclosure . ')/', $line) > 0) {
+            $line = $this->getNextLine($line);
+        }
+
+        return $line;
+    }
+
+    /**
+     * Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns).
+     *
+     * @param string $pFilename
+     *
+     * @throws Exception
+     *
+     * @return array
+     */
+    public function listWorksheetInfo($pFilename)
+    {
+        // Open file
+        if (!$this->canRead($pFilename)) {
+            throw new Exception($pFilename . ' is an Invalid Spreadsheet file.');
+        }
+        $this->openFile($pFilename);
+        $fileHandle = $this->fileHandle;
+
+        // Skip BOM, if any
+        $this->skipBOM();
+        $this->checkSeparator();
+        $this->inferSeparator();
+
+        $worksheetInfo = [];
+        $worksheetInfo[0]['worksheetName'] = 'Worksheet';
+        $worksheetInfo[0]['lastColumnLetter'] = 'A';
+        $worksheetInfo[0]['lastColumnIndex'] = 0;
+        $worksheetInfo[0]['totalRows'] = 0;
+        $worksheetInfo[0]['totalColumns'] = 0;
+
+        // Loop through each line of the file in turn
+        while (($rowData = fgetcsv($fileHandle, 0, $this->delimiter, $this->enclosure, $this->escapeCharacter)) !== false) {
+            ++$worksheetInfo[0]['totalRows'];
+            $worksheetInfo[0]['lastColumnIndex'] = max($worksheetInfo[0]['lastColumnIndex'], count($rowData) - 1);
+        }
+
+        $worksheetInfo[0]['lastColumnLetter'] = Coordinate::stringFromColumnIndex($worksheetInfo[0]['lastColumnIndex'] + 1);
+        $worksheetInfo[0]['totalColumns'] = $worksheetInfo[0]['lastColumnIndex'] + 1;
+
+        // Close file
+        fclose($fileHandle);
+
+        return $worksheetInfo;
+    }
+
+    /**
+     * Loads Spreadsheet from file.
+     *
+     * @param string $pFilename
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function load($pFilename)
+    {
+        // Create new Spreadsheet
+        $spreadsheet = new Spreadsheet();
+
+        // Load into this instance
+        return $this->loadIntoExisting($pFilename, $spreadsheet);
+    }
+
+    /**
+     * Loads PhpSpreadsheet from file into PhpSpreadsheet instance.
+     *
+     * @param string $pFilename
+     * @param Spreadsheet $spreadsheet
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function loadIntoExisting($pFilename, Spreadsheet $spreadsheet)
+    {
+        $lineEnding = ini_get('auto_detect_line_endings');
+        ini_set('auto_detect_line_endings', true);
+
+        // Open file
+        if (!$this->canRead($pFilename)) {
+            throw new Exception($pFilename . ' is an Invalid Spreadsheet file.');
+        }
+        $this->openFile($pFilename);
+        $fileHandle = $this->fileHandle;
+
+        // Skip BOM, if any
+        $this->skipBOM();
+        $this->checkSeparator();
+        $this->inferSeparator();
+
+        // Create new PhpSpreadsheet object
+        while ($spreadsheet->getSheetCount() <= $this->sheetIndex) {
+            $spreadsheet->createSheet();
+        }
+        $sheet = $spreadsheet->setActiveSheetIndex($this->sheetIndex);
+
+        // Set our starting row based on whether we're in contiguous mode or not
+        $currentRow = 1;
+        if ($this->contiguous) {
+            $currentRow = ($this->contiguousRow == -1) ? $sheet->getHighestRow() : $this->contiguousRow;
+        }
+
+        // Loop through each line of the file in turn
+        while (($rowData = fgetcsv($fileHandle, 0, $this->delimiter, $this->enclosure, $this->escapeCharacter)) !== false) {
+            $columnLetter = 'A';
+            foreach ($rowData as $rowDatum) {
+                if ($rowDatum != '' && $this->readFilter->readCell($columnLetter, $currentRow)) {
+                    // Convert encoding if necessary
+                    if ($this->inputEncoding !== 'UTF-8') {
+                        $rowDatum = StringHelper::convertEncoding($rowDatum, 'UTF-8', $this->inputEncoding);
+                    }
+
+                    // Set cell value
+                    $sheet->getCell($columnLetter . $currentRow)->setValue($rowDatum);
+                }
+                ++$columnLetter;
+            }
+            ++$currentRow;
+        }
+
+        // Close file
+        fclose($fileHandle);
+
+        if ($this->contiguous) {
+            $this->contiguousRow = $currentRow;
+        }
+
+        ini_set('auto_detect_line_endings', $lineEnding);
+
+        // Return
+        return $spreadsheet;
+    }
+
+    /**
+     * Get delimiter.
+     *
+     * @return string
+     */
+    public function getDelimiter()
+    {
+        return $this->delimiter;
+    }
+
+    /**
+     * Set delimiter.
+     *
+     * @param string $delimiter Delimiter, eg: ','
+     *
+     * @return CSV
+     */
+    public function setDelimiter($delimiter)
+    {
+        $this->delimiter = $delimiter;
+
+        return $this;
+    }
+
+    /**
+     * Get enclosure.
+     *
+     * @return string
+     */
+    public function getEnclosure()
+    {
+        return $this->enclosure;
+    }
+
+    /**
+     * Set enclosure.
+     *
+     * @param string $enclosure Enclosure, defaults to "
+     *
+     * @return CSV
+     */
+    public function setEnclosure($enclosure)
+    {
+        if ($enclosure == '') {
+            $enclosure = '"';
+        }
+        $this->enclosure = $enclosure;
+
+        return $this;
+    }
+
+    /**
+     * Get sheet index.
+     *
+     * @return int
+     */
+    public function getSheetIndex()
+    {
+        return $this->sheetIndex;
+    }
+
+    /**
+     * Set sheet index.
+     *
+     * @param int $pValue Sheet index
+     *
+     * @return CSV
+     */
+    public function setSheetIndex($pValue)
+    {
+        $this->sheetIndex = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Set Contiguous.
+     *
+     * @param bool $contiguous
+     *
+     * @return Csv
+     */
+    public function setContiguous($contiguous)
+    {
+        $this->contiguous = (bool) $contiguous;
+        if (!$contiguous) {
+            $this->contiguousRow = -1;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get Contiguous.
+     *
+     * @return bool
+     */
+    public function getContiguous()
+    {
+        return $this->contiguous;
+    }
+
+    /**
+     * Set escape backslashes.
+     *
+     * @param string $escapeCharacter
+     *
+     * @return $this
+     */
+    public function setEscapeCharacter($escapeCharacter)
+    {
+        $this->escapeCharacter = $escapeCharacter;
+
+        return $this;
+    }
+
+    /**
+     * Get escape backslashes.
+     *
+     * @return string
+     */
+    public function getEscapeCharacter()
+    {
+        return $this->escapeCharacter;
+    }
+
+    /**
+     * Can the current IReader read the file?
+     *
+     * @param string $pFilename
+     *
+     * @return bool
+     */
+    public function canRead($pFilename)
+    {
+        // Check if file exists
+        try {
+            $this->openFile($pFilename);
+        } catch (Exception $e) {
+            return false;
+        }
+
+        fclose($this->fileHandle);
+
+        // Trust file extension if any
+        $extension = strtolower(pathinfo($pFilename, PATHINFO_EXTENSION));
+        if (in_array($extension, ['csv', 'tsv'])) {
+            return true;
+        }
+
+        // Attempt to guess mimetype
+        $type = mime_content_type($pFilename);
+        $supportedTypes = [
+            'text/csv',
+            'text/plain',
+            'inode/x-empty',
+        ];
+
+        return in_array($type, $supportedTypes, true);
+    }
+}

PhpOffice/PhpSpreadsheet/Reader/DefaultReadFilter.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader;
+
+class DefaultReadFilter implements IReadFilter
+{
+    /**
+     * Should this cell be read?
+     *
+     * @param string $column Column address (as a string value like "A", or "IV")
+     * @param int $row Row number
+     * @param string $worksheetName Optional worksheet name
+     *
+     * @return bool
+     */
+    public function readCell($column, $row, $worksheetName = '')
+    {
+        return true;
+    }
+}

PhpOffice/PhpSpreadsheet/Reader/Exception.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader;
+
+use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
+
+class Exception extends PhpSpreadsheetException
+{
+}

PhpOffice/PhpSpreadsheet/Reader/Gnumeric.php

@@ -0,0 +1,889 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader;
+
+use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Cell\DataType;
+use PhpOffice\PhpSpreadsheet\NamedRange;
+use PhpOffice\PhpSpreadsheet\Reader\Security\XmlScanner;
+use PhpOffice\PhpSpreadsheet\ReferenceHelper;
+use PhpOffice\PhpSpreadsheet\RichText\RichText;
+use PhpOffice\PhpSpreadsheet\Settings;
+use PhpOffice\PhpSpreadsheet\Shared\Date;
+use PhpOffice\PhpSpreadsheet\Shared\File;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+use PhpOffice\PhpSpreadsheet\Style\Alignment;
+use PhpOffice\PhpSpreadsheet\Style\Border;
+use PhpOffice\PhpSpreadsheet\Style\Borders;
+use PhpOffice\PhpSpreadsheet\Style\Fill;
+use PhpOffice\PhpSpreadsheet\Style\Font;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+use XMLReader;
+
+class Gnumeric extends BaseReader
+{
+    /**
+     * Shared Expressions.
+     *
+     * @var array
+     */
+    private $expressions = [];
+
+    private $referenceHelper;
+
+    /**
+     * Create a new Gnumeric.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+        $this->referenceHelper = ReferenceHelper::getInstance();
+        $this->securityScanner = XmlScanner::getInstance($this);
+    }
+
+    /**
+     * Can the current IReader read the file?
+     *
+     * @param string $pFilename
+     *
+     * @throws Exception
+     *
+     * @return bool
+     */
+    public function canRead($pFilename)
+    {
+        File::assertFile($pFilename);
+
+        // Check if gzlib functions are available
+        if (!function_exists('gzread')) {
+            throw new Exception('gzlib library is not enabled');
+        }
+
+        // Read signature data (first 3 bytes)
+        $fh = fopen($pFilename, 'r');
+        $data = fread($fh, 2);
+        fclose($fh);
+
+        return $data == chr(0x1F) . chr(0x8B);
+    }
+
+    /**
+     * Reads names of the worksheets from a file, without parsing the whole file to a Spreadsheet object.
+     *
+     * @param string $pFilename
+     *
+     * @return array
+     */
+    public function listWorksheetNames($pFilename)
+    {
+        File::assertFile($pFilename);
+
+        $xml = new XMLReader();
+        $xml->xml($this->securityScanner->scanFile('compress.zlib://' . realpath($pFilename)), null, Settings::getLibXmlLoaderOptions());
+        $xml->setParserProperty(2, true);
+
+        $worksheetNames = [];
+        while ($xml->read()) {
+            if ($xml->name == 'gnm:SheetName' && $xml->nodeType == XMLReader::ELEMENT) {
+                $xml->read(); //    Move onto the value node
+                $worksheetNames[] = (string) $xml->value;
+            } elseif ($xml->name == 'gnm:Sheets') {
+                //    break out of the loop once we've got our sheet names rather than parse the entire file
+                break;
+            }
+        }
+
+        return $worksheetNames;
+    }
+
+    /**
+     * Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns).
+     *
+     * @param string $pFilename
+     *
+     * @return array
+     */
+    public function listWorksheetInfo($pFilename)
+    {
+        File::assertFile($pFilename);
+
+        $xml = new XMLReader();
+        $xml->xml($this->securityScanner->scanFile('compress.zlib://' . realpath($pFilename)), null, Settings::getLibXmlLoaderOptions());
+        $xml->setParserProperty(2, true);
+
+        $worksheetInfo = [];
+        while ($xml->read()) {
+            if ($xml->name == 'gnm:Sheet' && $xml->nodeType == XMLReader::ELEMENT) {
+                $tmpInfo = [
+                    'worksheetName' => '',
+                    'lastColumnLetter' => 'A',
+                    'lastColumnIndex' => 0,
+                    'totalRows' => 0,
+                    'totalColumns' => 0,
+                ];
+
+                while ($xml->read()) {
+                    if ($xml->name == 'gnm:Name' && $xml->nodeType == XMLReader::ELEMENT) {
+                        $xml->read(); //    Move onto the value node
+                        $tmpInfo['worksheetName'] = (string) $xml->value;
+                    } elseif ($xml->name == 'gnm:MaxCol' && $xml->nodeType == XMLReader::ELEMENT) {
+                        $xml->read(); //    Move onto the value node
+                        $tmpInfo['lastColumnIndex'] = (int) $xml->value;
+                        $tmpInfo['totalColumns'] = (int) $xml->value + 1;
+                    } elseif ($xml->name == 'gnm:MaxRow' && $xml->nodeType == XMLReader::ELEMENT) {
+                        $xml->read(); //    Move onto the value node
+                        $tmpInfo['totalRows'] = (int) $xml->value + 1;
+
+                        break;
+                    }
+                }
+                $tmpInfo['lastColumnLetter'] = Coordinate::stringFromColumnIndex($tmpInfo['lastColumnIndex'] + 1);
+                $worksheetInfo[] = $tmpInfo;
+            }
+        }
+
+        return $worksheetInfo;
+    }
+
+    /**
+     * @param string $filename
+     *
+     * @return string
+     */
+    private function gzfileGetContents($filename)
+    {
+        $file = @gzopen($filename, 'rb');
+        $data = '';
+        if ($file !== false) {
+            while (!gzeof($file)) {
+                $data .= gzread($file, 1024);
+            }
+            gzclose($file);
+        }
+
+        return $data;
+    }
+
+    /**
+     * Loads Spreadsheet from file.
+     *
+     * @param string $pFilename
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function load($pFilename)
+    {
+        // Create new Spreadsheet
+        $spreadsheet = new Spreadsheet();
+
+        // Load into this instance
+        return $this->loadIntoExisting($pFilename, $spreadsheet);
+    }
+
+    /**
+     * Loads from file into Spreadsheet instance.
+     *
+     * @param string $pFilename
+     * @param Spreadsheet $spreadsheet
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function loadIntoExisting($pFilename, Spreadsheet $spreadsheet)
+    {
+        File::assertFile($pFilename);
+
+        $gFileData = $this->gzfileGetContents($pFilename);
+
+        $xml = simplexml_load_string($this->securityScanner->scan($gFileData), 'SimpleXMLElement', Settings::getLibXmlLoaderOptions());
+        $namespacesMeta = $xml->getNamespaces(true);
+
+        $gnmXML = $xml->children($namespacesMeta['gnm']);
+
+        $docProps = $spreadsheet->getProperties();
+        //    Document Properties are held differently, depending on the version of Gnumeric
+        if (isset($namespacesMeta['office'])) {
+            $officeXML = $xml->children($namespacesMeta['office']);
+            $officeDocXML = $officeXML->{'document-meta'};
+            $officeDocMetaXML = $officeDocXML->meta;
+
+            foreach ($officeDocMetaXML as $officePropertyData) {
+                $officePropertyDC = [];
+                if (isset($namespacesMeta['dc'])) {
+                    $officePropertyDC = $officePropertyData->children($namespacesMeta['dc']);
+                }
+                foreach ($officePropertyDC as $propertyName => $propertyValue) {
+                    $propertyValue = (string) $propertyValue;
+                    switch ($propertyName) {
+                        case 'title':
+                            $docProps->setTitle(trim($propertyValue));
+
+                            break;
+                        case 'subject':
+                            $docProps->setSubject(trim($propertyValue));
+
+                            break;
+                        case 'creator':
+                            $docProps->setCreator(trim($propertyValue));
+                            $docProps->setLastModifiedBy(trim($propertyValue));
+
+                            break;
+                        case 'date':
+                            $creationDate = strtotime(trim($propertyValue));
+                            $docProps->setCreated($creationDate);
+                            $docProps->setModified($creationDate);
+
+                            break;
+                        case 'description':
+                            $docProps->setDescription(trim($propertyValue));
+
+                            break;
+                    }
+                }
+                $officePropertyMeta = [];
+                if (isset($namespacesMeta['meta'])) {
+                    $officePropertyMeta = $officePropertyData->children($namespacesMeta['meta']);
+                }
+                foreach ($officePropertyMeta as $propertyName => $propertyValue) {
+                    $attributes = $propertyValue->attributes($namespacesMeta['meta']);
+                    $propertyValue = (string) $propertyValue;
+                    switch ($propertyName) {
+                        case 'keyword':
+                            $docProps->setKeywords(trim($propertyValue));
+
+                            break;
+                        case 'initial-creator':
+                            $docProps->setCreator(trim($propertyValue));
+                            $docProps->setLastModifiedBy(trim($propertyValue));
+
+                            break;
+                        case 'creation-date':
+                            $creationDate = strtotime(trim($propertyValue));
+                            $docProps->setCreated($creationDate);
+                            $docProps->setModified($creationDate);
+
+                            break;
+                        case 'user-defined':
+                            [, $attrName] = explode(':', $attributes['name']);
+                            switch ($attrName) {
+                                case 'publisher':
+                                    $docProps->setCompany(trim($propertyValue));
+
+                                    break;
+                                case 'category':
+                                    $docProps->setCategory(trim($propertyValue));
+
+                                    break;
+                                case 'manager':
+                                    $docProps->setManager(trim($propertyValue));
+
+                                    break;
+                            }
+
+                            break;
+                    }
+                }
+            }
+        } elseif (isset($gnmXML->Summary)) {
+            foreach ($gnmXML->Summary->Item as $summaryItem) {
+                $propertyName = $summaryItem->name;
+                $propertyValue = $summaryItem->{'val-string'};
+                switch ($propertyName) {
+                    case 'title':
+                        $docProps->setTitle(trim($propertyValue));
+
+                        break;
+                    case 'comments':
+                        $docProps->setDescription(trim($propertyValue));
+
+                        break;
+                    case 'keywords':
+                        $docProps->setKeywords(trim($propertyValue));
+
+                        break;
+                    case 'category':
+                        $docProps->setCategory(trim($propertyValue));
+
+                        break;
+                    case 'manager':
+                        $docProps->setManager(trim($propertyValue));
+
+                        break;
+                    case 'author':
+                        $docProps->setCreator(trim($propertyValue));
+                        $docProps->setLastModifiedBy(trim($propertyValue));
+
+                        break;
+                    case 'company':
+                        $docProps->setCompany(trim($propertyValue));
+
+                        break;
+                }
+            }
+        }
+
+        $worksheetID = 0;
+        foreach ($gnmXML->Sheets->Sheet as $sheet) {
+            $worksheetName = (string) $sheet->Name;
+            if ((isset($this->loadSheetsOnly)) && (!in_array($worksheetName, $this->loadSheetsOnly))) {
+                continue;
+            }
+
+            $maxRow = $maxCol = 0;
+
+            // Create new Worksheet
+            $spreadsheet->createSheet();
+            $spreadsheet->setActiveSheetIndex($worksheetID);
+            //    Use false for $updateFormulaCellReferences to prevent adjustment of worksheet references in formula
+            //        cells... during the load, all formulae should be correct, and we're simply bringing the worksheet
+            //        name in line with the formula, not the reverse
+            $spreadsheet->getActiveSheet()->setTitle($worksheetName, false, false);
+
+            if ((!$this->readDataOnly) && (isset($sheet->PrintInformation))) {
+                if (isset($sheet->PrintInformation->Margins)) {
+                    foreach ($sheet->PrintInformation->Margins->children('gnm', true) as $key => $margin) {
+                        $marginAttributes = $margin->attributes();
+                        $marginSize = 72 / 100; //    Default
+                        switch ($marginAttributes['PrefUnit']) {
+                            case 'mm':
+                                $marginSize = (int) ($marginAttributes['Points']) / 100;
+
+                                break;
+                        }
+                        switch ($key) {
+                            case 'top':
+                                $spreadsheet->getActiveSheet()->getPageMargins()->setTop($marginSize);
+
+                                break;
+                            case 'bottom':
+                                $spreadsheet->getActiveSheet()->getPageMargins()->setBottom($marginSize);
+
+                                break;
+                            case 'left':
+                                $spreadsheet->getActiveSheet()->getPageMargins()->setLeft($marginSize);
+
+                                break;
+                            case 'right':
+                                $spreadsheet->getActiveSheet()->getPageMargins()->setRight($marginSize);
+
+                                break;
+                            case 'header':
+                                $spreadsheet->getActiveSheet()->getPageMargins()->setHeader($marginSize);
+
+                                break;
+                            case 'footer':
+                                $spreadsheet->getActiveSheet()->getPageMargins()->setFooter($marginSize);
+
+                                break;
+                        }
+                    }
+                }
+            }
+
+            foreach ($sheet->Cells->Cell as $cell) {
+                $cellAttributes = $cell->attributes();
+                $row = (int) $cellAttributes->Row + 1;
+                $column = (int) $cellAttributes->Col;
+
+                if ($row > $maxRow) {
+                    $maxRow = $row;
+                }
+                if ($column > $maxCol) {
+                    $maxCol = $column;
+                }
+
+                $column = Coordinate::stringFromColumnIndex($column + 1);
+
+                // Read cell?
+                if ($this->getReadFilter() !== null) {
+                    if (!$this->getReadFilter()->readCell($column, $row, $worksheetName)) {
+                        continue;
+                    }
+                }
+
+                $ValueType = $cellAttributes->ValueType;
+                $ExprID = (string) $cellAttributes->ExprID;
+                $type = DataType::TYPE_FORMULA;
+                if ($ExprID > '') {
+                    if (((string) $cell) > '') {
+                        $this->expressions[$ExprID] = [
+                            'column' => $cellAttributes->Col,
+                            'row' => $cellAttributes->Row,
+                            'formula' => (string) $cell,
+                        ];
+                    } else {
+                        $expression = $this->expressions[$ExprID];
+
+                        $cell = $this->referenceHelper->updateFormulaReferences(
+                            $expression['formula'],
+                            'A1',
+                            $cellAttributes->Col - $expression['column'],
+                            $cellAttributes->Row - $expression['row'],
+                            $worksheetName
+                        );
+                    }
+                    $type = DataType::TYPE_FORMULA;
+                } else {
+                    switch ($ValueType) {
+                        case '10':        //    NULL
+                            $type = DataType::TYPE_NULL;
+
+                            break;
+                        case '20':        //    Boolean
+                            $type = DataType::TYPE_BOOL;
+                            $cell = $cell == 'TRUE';
+
+                            break;
+                        case '30':        //    Integer
+                            $cell = (int) $cell;
+                            // Excel 2007+ doesn't differentiate between integer and float, so set the value and dropthru to the next (numeric) case
+                            // no break
+                        case '40':        //    Float
+                            $type = DataType::TYPE_NUMERIC;
+
+                            break;
+                        case '50':        //    Error
+                            $type = DataType::TYPE_ERROR;
+
+                            break;
+                        case '60':        //    String
+                            $type = DataType::TYPE_STRING;
+
+                            break;
+                        case '70':        //    Cell Range
+                        case '80':        //    Array
+                    }
+                }
+                $spreadsheet->getActiveSheet()->getCell($column . $row)->setValueExplicit($cell, $type);
+            }
+
+            if ((!$this->readDataOnly) && (isset($sheet->Objects))) {
+                foreach ($sheet->Objects->children('gnm', true) as $key => $comment) {
+                    $commentAttributes = $comment->attributes();
+                    //    Only comment objects are handled at the moment
+                    if ($commentAttributes->Text) {
+                        $spreadsheet->getActiveSheet()->getComment((string) $commentAttributes->ObjectBound)->setAuthor((string) $commentAttributes->Author)->setText($this->parseRichText((string) $commentAttributes->Text));
+                    }
+                }
+            }
+            foreach ($sheet->Styles->StyleRegion as $styleRegion) {
+                $styleAttributes = $styleRegion->attributes();
+                if (($styleAttributes['startRow'] <= $maxRow) &&
+                    ($styleAttributes['startCol'] <= $maxCol)) {
+                    $startColumn = Coordinate::stringFromColumnIndex((int) $styleAttributes['startCol'] + 1);
+                    $startRow = $styleAttributes['startRow'] + 1;
+
+                    $endColumn = ($styleAttributes['endCol'] > $maxCol) ? $maxCol : (int) $styleAttributes['endCol'];
+                    $endColumn = Coordinate::stringFromColumnIndex($endColumn + 1);
+                    $endRow = ($styleAttributes['endRow'] > $maxRow) ? $maxRow : $styleAttributes['endRow'];
+                    $endRow += 1;
+                    $cellRange = $startColumn . $startRow . ':' . $endColumn . $endRow;
+
+                    $styleAttributes = $styleRegion->Style->attributes();
+
+                    //    We still set the number format mask for date/time values, even if readDataOnly is true
+                    if ((!$this->readDataOnly) ||
+                        (Date::isDateTimeFormatCode((string) $styleAttributes['Format']))) {
+                        $styleArray = [];
+                        $styleArray['numberFormat']['formatCode'] = (string) $styleAttributes['Format'];
+                        //    If readDataOnly is false, we set all formatting information
+                        if (!$this->readDataOnly) {
+                            switch ($styleAttributes['HAlign']) {
+                                case '1':
+                                    $styleArray['alignment']['horizontal'] = Alignment::HORIZONTAL_GENERAL;
+
+                                    break;
+                                case '2':
+                                    $styleArray['alignment']['horizontal'] = Alignment::HORIZONTAL_LEFT;
+
+                                    break;
+                                case '4':
+                                    $styleArray['alignment']['horizontal'] = Alignment::HORIZONTAL_RIGHT;
+
+                                    break;
+                                case '8':
+                                    $styleArray['alignment']['horizontal'] = Alignment::HORIZONTAL_CENTER;
+
+                                    break;
+                                case '16':
+                                case '64':
+                                    $styleArray['alignment']['horizontal'] = Alignment::HORIZONTAL_CENTER_CONTINUOUS;
+
+                                    break;
+                                case '32':
+                                    $styleArray['alignment']['horizontal'] = Alignment::HORIZONTAL_JUSTIFY;
+
+                                    break;
+                            }
+
+                            switch ($styleAttributes['VAlign']) {
+                                case '1':
+                                    $styleArray['alignment']['vertical'] = Alignment::VERTICAL_TOP;
+
+                                    break;
+                                case '2':
+                                    $styleArray['alignment']['vertical'] = Alignment::VERTICAL_BOTTOM;
+
+                                    break;
+                                case '4':
+                                    $styleArray['alignment']['vertical'] = Alignment::VERTICAL_CENTER;
+
+                                    break;
+                                case '8':
+                                    $styleArray['alignment']['vertical'] = Alignment::VERTICAL_JUSTIFY;
+
+                                    break;
+                            }
+
+                            $styleArray['alignment']['wrapText'] = $styleAttributes['WrapText'] == '1';
+                            $styleArray['alignment']['shrinkToFit'] = $styleAttributes['ShrinkToFit'] == '1';
+                            $styleArray['alignment']['indent'] = ((int) ($styleAttributes['Indent']) > 0) ? $styleAttributes['indent'] : 0;
+
+                            $RGB = self::parseGnumericColour($styleAttributes['Fore']);
+                            $styleArray['font']['color']['rgb'] = $RGB;
+                            $RGB = self::parseGnumericColour($styleAttributes['Back']);
+                            $shade = $styleAttributes['Shade'];
+                            if (($RGB != '000000') || ($shade != '0')) {
+                                $styleArray['fill']['color']['rgb'] = $styleArray['fill']['startColor']['rgb'] = $RGB;
+                                $RGB2 = self::parseGnumericColour($styleAttributes['PatternColor']);
+                                $styleArray['fill']['endColor']['rgb'] = $RGB2;
+                                switch ($shade) {
+                                    case '1':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_SOLID;
+
+                                        break;
+                                    case '2':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_GRADIENT_LINEAR;
+
+                                        break;
+                                    case '3':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_GRADIENT_PATH;
+
+                                        break;
+                                    case '4':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKDOWN;
+
+                                        break;
+                                    case '5':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKGRAY;
+
+                                        break;
+                                    case '6':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKGRID;
+
+                                        break;
+                                    case '7':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKHORIZONTAL;
+
+                                        break;
+                                    case '8':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKTRELLIS;
+
+                                        break;
+                                    case '9':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKUP;
+
+                                        break;
+                                    case '10':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_DARKVERTICAL;
+
+                                        break;
+                                    case '11':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_GRAY0625;
+
+                                        break;
+                                    case '12':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_GRAY125;
+
+                                        break;
+                                    case '13':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTDOWN;
+
+                                        break;
+                                    case '14':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTGRAY;
+
+                                        break;
+                                    case '15':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTGRID;
+
+                                        break;
+                                    case '16':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTHORIZONTAL;
+
+                                        break;
+                                    case '17':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTTRELLIS;
+
+                                        break;
+                                    case '18':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTUP;
+
+                                        break;
+                                    case '19':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_LIGHTVERTICAL;
+
+                                        break;
+                                    case '20':
+                                        $styleArray['fill']['fillType'] = Fill::FILL_PATTERN_MEDIUMGRAY;
+
+                                        break;
+                                }
+                            }
+
+                            $fontAttributes = $styleRegion->Style->Font->attributes();
+                            $styleArray['font']['name'] = (string) $styleRegion->Style->Font;
+                            $styleArray['font']['size'] = (int) ($fontAttributes['Unit']);
+                            $styleArray['font']['bold'] = $fontAttributes['Bold'] == '1';
+                            $styleArray['font']['italic'] = $fontAttributes['Italic'] == '1';
+                            $styleArray['font']['strikethrough'] = $fontAttributes['StrikeThrough'] == '1';
+                            switch ($fontAttributes['Underline']) {
+                                case '1':
+                                    $styleArray['font']['underline'] = Font::UNDERLINE_SINGLE;
+
+                                    break;
+                                case '2':
+                                    $styleArray['font']['underline'] = Font::UNDERLINE_DOUBLE;
+
+                                    break;
+                                case '3':
+                                    $styleArray['font']['underline'] = Font::UNDERLINE_SINGLEACCOUNTING;
+
+                                    break;
+                                case '4':
+                                    $styleArray['font']['underline'] = Font::UNDERLINE_DOUBLEACCOUNTING;
+
+                                    break;
+                                default:
+                                    $styleArray['font']['underline'] = Font::UNDERLINE_NONE;
+
+                                    break;
+                            }
+                            switch ($fontAttributes['Script']) {
+                                case '1':
+                                    $styleArray['font']['superscript'] = true;
+
+                                    break;
+                                case '-1':
+                                    $styleArray['font']['subscript'] = true;
+
+                                    break;
+                            }
+
+                            if (isset($styleRegion->Style->StyleBorder)) {
+                                if (isset($styleRegion->Style->StyleBorder->Top)) {
+                                    $styleArray['borders']['top'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->Top->attributes());
+                                }
+                                if (isset($styleRegion->Style->StyleBorder->Bottom)) {
+                                    $styleArray['borders']['bottom'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->Bottom->attributes());
+                                }
+                                if (isset($styleRegion->Style->StyleBorder->Left)) {
+                                    $styleArray['borders']['left'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->Left->attributes());
+                                }
+                                if (isset($styleRegion->Style->StyleBorder->Right)) {
+                                    $styleArray['borders']['right'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->Right->attributes());
+                                }
+                                if ((isset($styleRegion->Style->StyleBorder->Diagonal)) && (isset($styleRegion->Style->StyleBorder->{'Rev-Diagonal'}))) {
+                                    $styleArray['borders']['diagonal'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->Diagonal->attributes());
+                                    $styleArray['borders']['diagonalDirection'] = Borders::DIAGONAL_BOTH;
+                                } elseif (isset($styleRegion->Style->StyleBorder->Diagonal)) {
+                                    $styleArray['borders']['diagonal'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->Diagonal->attributes());
+                                    $styleArray['borders']['diagonalDirection'] = Borders::DIAGONAL_UP;
+                                } elseif (isset($styleRegion->Style->StyleBorder->{'Rev-Diagonal'})) {
+                                    $styleArray['borders']['diagonal'] = self::parseBorderAttributes($styleRegion->Style->StyleBorder->{'Rev-Diagonal'}->attributes());
+                                    $styleArray['borders']['diagonalDirection'] = Borders::DIAGONAL_DOWN;
+                                }
+                            }
+                            if (isset($styleRegion->Style->HyperLink)) {
+                                //    TO DO
+                                $hyperlink = $styleRegion->Style->HyperLink->attributes();
+                            }
+                        }
+                        $spreadsheet->getActiveSheet()->getStyle($cellRange)->applyFromArray($styleArray);
+                    }
+                }
+            }
+
+            if ((!$this->readDataOnly) && (isset($sheet->Cols))) {
+                //    Column Widths
+                $columnAttributes = $sheet->Cols->attributes();
+                $defaultWidth = $columnAttributes['DefaultSizePts'] / 5.4;
+                $c = 0;
+                foreach ($sheet->Cols->ColInfo as $columnOverride) {
+                    $columnAttributes = $columnOverride->attributes();
+                    $column = $columnAttributes['No'];
+                    $columnWidth = $columnAttributes['Unit'] / 5.4;
+                    $hidden = (isset($columnAttributes['Hidden'])) && ($columnAttributes['Hidden'] == '1');
+                    $columnCount = (isset($columnAttributes['Count'])) ? $columnAttributes['Count'] : 1;
+                    while ($c < $column) {
+                        $spreadsheet->getActiveSheet()->getColumnDimension(Coordinate::stringFromColumnIndex($c + 1))->setWidth($defaultWidth);
+                        ++$c;
+                    }
+                    while (($c < ($column + $columnCount)) && ($c <= $maxCol)) {
+                        $spreadsheet->getActiveSheet()->getColumnDimension(Coordinate::stringFromColumnIndex($c + 1))->setWidth($columnWidth);
+                        if ($hidden) {
+                            $spreadsheet->getActiveSheet()->getColumnDimension(Coordinate::stringFromColumnIndex($c + 1))->setVisible(false);
+                        }
+                        ++$c;
+                    }
+                }
+                while ($c <= $maxCol) {
+                    $spreadsheet->getActiveSheet()->getColumnDimension(Coordinate::stringFromColumnIndex($c + 1))->setWidth($defaultWidth);
+                    ++$c;
+                }
+            }
+
+            if ((!$this->readDataOnly) && (isset($sheet->Rows))) {
+                //    Row Heights
+                $rowAttributes = $sheet->Rows->attributes();
+                $defaultHeight = $rowAttributes['DefaultSizePts'];
+                $r = 0;
+
+                foreach ($sheet->Rows->RowInfo as $rowOverride) {
+                    $rowAttributes = $rowOverride->attributes();
+                    $row = $rowAttributes['No'];
+                    $rowHeight = $rowAttributes['Unit'];
+                    $hidden = (isset($rowAttributes['Hidden'])) && ($rowAttributes['Hidden'] == '1');
+                    $rowCount = (isset($rowAttributes['Count'])) ? $rowAttributes['Count'] : 1;
+                    while ($r < $row) {
+                        ++$r;
+                        $spreadsheet->getActiveSheet()->getRowDimension($r)->setRowHeight($defaultHeight);
+                    }
+                    while (($r < ($row + $rowCount)) && ($r < $maxRow)) {
+                        ++$r;
+                        $spreadsheet->getActiveSheet()->getRowDimension($r)->setRowHeight($rowHeight);
+                        if ($hidden) {
+                            $spreadsheet->getActiveSheet()->getRowDimension($r)->setVisible(false);
+                        }
+                    }
+                }
+                while ($r < $maxRow) {
+                    ++$r;
+                    $spreadsheet->getActiveSheet()->getRowDimension($r)->setRowHeight($defaultHeight);
+                }
+            }
+
+            //    Handle Merged Cells in this worksheet
+            if (isset($sheet->MergedRegions)) {
+                foreach ($sheet->MergedRegions->Merge as $mergeCells) {
+                    if (strpos($mergeCells, ':') !== false) {
+                        $spreadsheet->getActiveSheet()->mergeCells($mergeCells);
+                    }
+                }
+            }
+
+            ++$worksheetID;
+        }
+
+        //    Loop through definedNames (global named ranges)
+        if (isset($gnmXML->Names)) {
+            foreach ($gnmXML->Names->Name as $namedRange) {
+                $name = (string) $namedRange->name;
+                $range = (string) $namedRange->value;
+                if (stripos($range, '#REF!') !== false) {
+                    continue;
+                }
+
+                $range = Worksheet::extractSheetTitle($range, true);
+                $range[0] = trim($range[0], "'");
+                if ($worksheet = $spreadsheet->getSheetByName($range[0])) {
+                    $extractedRange = str_replace('$', '', $range[1]);
+                    $spreadsheet->addNamedRange(new NamedRange($name, $worksheet, $extractedRange));
+                }
+            }
+        }
+
+        // Return
+        return $spreadsheet;
+    }
+
+    private static function parseBorderAttributes($borderAttributes)
+    {
+        $styleArray = [];
+        if (isset($borderAttributes['Color'])) {
+            $styleArray['color']['rgb'] = self::parseGnumericColour($borderAttributes['Color']);
+        }
+
+        switch ($borderAttributes['Style']) {
+            case '0':
+                $styleArray['borderStyle'] = Border::BORDER_NONE;
+
+                break;
+            case '1':
+                $styleArray['borderStyle'] = Border::BORDER_THIN;
+
+                break;
+            case '2':
+                $styleArray['borderStyle'] = Border::BORDER_MEDIUM;
+
+                break;
+            case '3':
+                $styleArray['borderStyle'] = Border::BORDER_SLANTDASHDOT;
+
+                break;
+            case '4':
+                $styleArray['borderStyle'] = Border::BORDER_DASHED;
+
+                break;
+            case '5':
+                $styleArray['borderStyle'] = Border::BORDER_THICK;
+
+                break;
+            case '6':
+                $styleArray['borderStyle'] = Border::BORDER_DOUBLE;
+
+                break;
+            case '7':
+                $styleArray['borderStyle'] = Border::BORDER_DOTTED;
+
+                break;
+            case '8':
+                $styleArray['borderStyle'] = Border::BORDER_MEDIUMDASHED;
+
+                break;
+            case '9':
+                $styleArray['borderStyle'] = Border::BORDER_DASHDOT;
+
+                break;
+            case '10':
+                $styleArray['borderStyle'] = Border::BORDER_MEDIUMDASHDOT;
+
+                break;
+            case '11':
+                $styleArray['borderStyle'] = Border::BORDER_DASHDOTDOT;
+
+                break;
+            case '12':
+                $styleArray['borderStyle'] = Border::BORDER_MEDIUMDASHDOTDOT;
+
+                break;
+            case '13':
+                $styleArray['borderStyle'] = Border::BORDER_MEDIUMDASHDOTDOT;
+
+                break;
+        }
+
+        return $styleArray;
+    }
+
+    private function parseRichText($is)
+    {
+        $value = new RichText();
+        $value->createText($is);
+
+        return $value;
+    }
+
+    private static function parseGnumericColour($gnmColour)
+    {
+        [$gnmR, $gnmG, $gnmB] = explode(':', $gnmColour);
+        $gnmR = substr(str_pad($gnmR, 4, '0', STR_PAD_RIGHT), 0, 2);
+        $gnmG = substr(str_pad($gnmG, 4, '0', STR_PAD_RIGHT), 0, 2);
+        $gnmB = substr(str_pad($gnmB, 4, '0', STR_PAD_RIGHT), 0, 2);
+
+        return $gnmR . $gnmG . $gnmB;
+    }
+}

PhpOffice/PhpSpreadsheet/Reader/Html.php

@@ -0,0 +1,970 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader;
+
+use DOMDocument;
+use DOMElement;
+use DOMNode;
+use DOMText;
+use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Reader\Security\XmlScanner;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+use PhpOffice\PhpSpreadsheet\Style\Border;
+use PhpOffice\PhpSpreadsheet\Style\Color;
+use PhpOffice\PhpSpreadsheet\Style\Fill;
+use PhpOffice\PhpSpreadsheet\Style\Font;
+use PhpOffice\PhpSpreadsheet\Style\Style;
+use PhpOffice\PhpSpreadsheet\Worksheet\Drawing;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+/** PhpSpreadsheet root directory */
+class Html extends BaseReader
+{
+    /**
+     * Sample size to read to determine if it's HTML or not.
+     */
+    const TEST_SAMPLE_SIZE = 2048;
+
+    /**
+     * Input encoding.
+     *
+     * @var string
+     */
+    protected $inputEncoding = 'ANSI';
+
+    /**
+     * Sheet index to read.
+     *
+     * @var int
+     */
+    protected $sheetIndex = 0;
+
+    /**
+     * Formats.
+     *
+     * @var array
+     */
+    protected $formats = [
+        'h1' => [
+            'font' => [
+                'bold' => true,
+                'size' => 24,
+            ],
+        ], //    Bold, 24pt
+        'h2' => [
+            'font' => [
+                'bold' => true,
+                'size' => 18,
+            ],
+        ], //    Bold, 18pt
+        'h3' => [
+            'font' => [
+                'bold' => true,
+                'size' => 13.5,
+            ],
+        ], //    Bold, 13.5pt
+        'h4' => [
+            'font' => [
+                'bold' => true,
+                'size' => 12,
+            ],
+        ], //    Bold, 12pt
+        'h5' => [
+            'font' => [
+                'bold' => true,
+                'size' => 10,
+            ],
+        ], //    Bold, 10pt
+        'h6' => [
+            'font' => [
+                'bold' => true,
+                'size' => 7.5,
+            ],
+        ], //    Bold, 7.5pt
+        'a' => [
+            'font' => [
+                'underline' => true,
+                'color' => [
+                    'argb' => Color::COLOR_BLUE,
+                ],
+            ],
+        ], //    Blue underlined
+        'hr' => [
+            'borders' => [
+                'bottom' => [
+                    'borderStyle' => Border::BORDER_THIN,
+                    'color' => [
+                        Color::COLOR_BLACK,
+                    ],
+                ],
+            ],
+        ], //    Bottom border
+        'strong' => [
+            'font' => [
+                'bold' => true,
+            ],
+        ], //    Bold
+        'b' => [
+            'font' => [
+                'bold' => true,
+            ],
+        ], //    Bold
+        'i' => [
+            'font' => [
+                'italic' => true,
+            ],
+        ], //    Italic
+        'em' => [
+            'font' => [
+                'italic' => true,
+            ],
+        ], //    Italic
+    ];
+
+    protected $rowspan = [];
+
+    /**
+     * Create a new HTML Reader instance.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+        $this->securityScanner = XmlScanner::getInstance($this);
+    }
+
+    /**
+     * Validate that the current file is an HTML file.
+     *
+     * @param string $pFilename
+     *
+     * @return bool
+     */
+    public function canRead($pFilename)
+    {
+        // Check if file exists
+        try {
+            $this->openFile($pFilename);
+        } catch (Exception $e) {
+            return false;
+        }
+
+        $beginning = $this->readBeginning();
+        $startWithTag = self::startsWithTag($beginning);
+        $containsTags = self::containsTags($beginning);
+        $endsWithTag = self::endsWithTag($this->readEnding());
+
+        fclose($this->fileHandle);
+
+        return $startWithTag && $containsTags && $endsWithTag;
+    }
+
+    private function readBeginning()
+    {
+        fseek($this->fileHandle, 0);
+
+        return fread($this->fileHandle, self::TEST_SAMPLE_SIZE);
+    }
+
+    private function readEnding()
+    {
+        $meta = stream_get_meta_data($this->fileHandle);
+        $filename = $meta['uri'];
+
+        $size = filesize($filename);
+        if ($size === 0) {
+            return '';
+        }
+
+        $blockSize = self::TEST_SAMPLE_SIZE;
+        if ($size < $blockSize) {
+            $blockSize = $size;
+        }
+
+        fseek($this->fileHandle, $size - $blockSize);
+
+        return fread($this->fileHandle, $blockSize);
+    }
+
+    private static function startsWithTag($data)
+    {
+        return '<' === substr(trim($data), 0, 1);
+    }
+
+    private static function endsWithTag($data)
+    {
+        return '>' === substr(trim($data), -1, 1);
+    }
+
+    private static function containsTags($data)
+    {
+        return strlen($data) !== strlen(strip_tags($data));
+    }
+
+    /**
+     * Loads Spreadsheet from file.
+     *
+     * @param string $pFilename
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function load($pFilename)
+    {
+        // Create new Spreadsheet
+        $spreadsheet = new Spreadsheet();
+
+        // Load into this instance
+        return $this->loadIntoExisting($pFilename, $spreadsheet);
+    }
+
+    /**
+     * Set input encoding.
+     *
+     * @param string $pValue Input encoding, eg: 'ANSI'
+     *
+     * @return Html
+     */
+    public function setInputEncoding($pValue)
+    {
+        $this->inputEncoding = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Get input encoding.
+     *
+     * @return string
+     */
+    public function getInputEncoding()
+    {
+        return $this->inputEncoding;
+    }
+
+    //    Data Array used for testing only, should write to Spreadsheet object on completion of tests
+    protected $dataArray = [];
+
+    protected $tableLevel = 0;
+
+    protected $nestedColumn = ['A'];
+
+    protected function setTableStartColumn($column)
+    {
+        if ($this->tableLevel == 0) {
+            $column = 'A';
+        }
+        ++$this->tableLevel;
+        $this->nestedColumn[$this->tableLevel] = $column;
+
+        return $this->nestedColumn[$this->tableLevel];
+    }
+
+    protected function getTableStartColumn()
+    {
+        return $this->nestedColumn[$this->tableLevel];
+    }
+
+    protected function releaseTableStartColumn()
+    {
+        --$this->tableLevel;
+
+        return array_pop($this->nestedColumn);
+    }
+
+    protected function flushCell(Worksheet $sheet, $column, $row, &$cellContent)
+    {
+        if (is_string($cellContent)) {
+            //    Simple String content
+            if (trim($cellContent) > '') {
+                //    Only actually write it if there's content in the string
+                //    Write to worksheet to be done here...
+                //    ... we return the cell so we can mess about with styles more easily
+                $sheet->setCellValue($column . $row, $cellContent);
+                $this->dataArray[$row][$column] = $cellContent;
+            }
+        } else {
+            //    We have a Rich Text run
+            //    TODO
+            $this->dataArray[$row][$column] = 'RICH TEXT: ' . $cellContent;
+        }
+        $cellContent = (string) '';
+    }
+
+    /**
+     * @param DOMNode $element
+     * @param Worksheet $sheet
+     * @param int $row
+     * @param string $column
+     * @param string $cellContent
+     */
+    protected function processDomElement(DOMNode $element, Worksheet $sheet, &$row, &$column, &$cellContent)
+    {
+        foreach ($element->childNodes as $child) {
+            if ($child instanceof DOMText) {
+                $domText = preg_replace('/\s+/u', ' ', trim($child->nodeValue));
+                if (is_string($cellContent)) {
+                    //    simply append the text if the cell content is a plain text string
+                    $cellContent .= $domText;
+                }
+                //    but if we have a rich text run instead, we need to append it correctly
+                    //    TODO
+            } elseif ($child instanceof DOMElement) {
+                $attributeArray = [];
+                foreach ($child->attributes as $attribute) {
+                    $attributeArray[$attribute->name] = $attribute->value;
+                }
+
+                switch ($child->nodeName) {
+                    case 'meta':
+                        foreach ($attributeArray as $attributeName => $attributeValue) {
+                            // Extract character set, so we can convert to UTF-8 if required
+                            if ($attributeName === 'charset') {
+                                $this->setInputEncoding($attributeValue);
+                            }
+                        }
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+
+                        break;
+                    case 'title':
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                        $sheet->setTitle($cellContent, true, false);
+                        $cellContent = '';
+
+                        break;
+                    case 'span':
+                    case 'div':
+                    case 'font':
+                    case 'i':
+                    case 'em':
+                    case 'strong':
+                    case 'b':
+                        if (isset($attributeArray['class']) && $attributeArray['class'] === 'comment') {
+                            $sheet->getComment($column . $row)
+                                ->getText()
+                                ->createTextRun($child->textContent);
+
+                            break;
+                        }
+
+                        if ($cellContent > '') {
+                            $cellContent .= ' ';
+                        }
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                        if ($cellContent > '') {
+                            $cellContent .= ' ';
+                        }
+
+                        if (isset($this->formats[$child->nodeName])) {
+                            $sheet->getStyle($column . $row)->applyFromArray($this->formats[$child->nodeName]);
+                        }
+
+                        break;
+                    case 'hr':
+                        $this->flushCell($sheet, $column, $row, $cellContent);
+                        ++$row;
+                        if (isset($this->formats[$child->nodeName])) {
+                            $sheet->getStyle($column . $row)->applyFromArray($this->formats[$child->nodeName]);
+                        } else {
+                            $cellContent = '----------';
+                            $this->flushCell($sheet, $column, $row, $cellContent);
+                        }
+                        ++$row;
+                        // Add a break after a horizontal rule, simply by allowing the code to dropthru
+                        // no break
+                    case 'br':
+                        if ($this->tableLevel > 0) {
+                            //    If we're inside a table, replace with a \n and set the cell to wrap
+                            $cellContent .= "\n";
+                            $sheet->getStyle($column . $row)->getAlignment()->setWrapText(true);
+                        } else {
+                            //    Otherwise flush our existing content and move the row cursor on
+                            $this->flushCell($sheet, $column, $row, $cellContent);
+                            ++$row;
+                        }
+
+                        break;
+                    case 'a':
+                        foreach ($attributeArray as $attributeName => $attributeValue) {
+                            switch ($attributeName) {
+                                case 'href':
+                                    $sheet->getCell($column . $row)->getHyperlink()->setUrl($attributeValue);
+                                    if (isset($this->formats[$child->nodeName])) {
+                                        $sheet->getStyle($column . $row)->applyFromArray($this->formats[$child->nodeName]);
+                                    }
+
+                                    break;
+                                case 'class':
+                                    if ($attributeValue === 'comment-indicator') {
+                                        break; // Ignore - it's just a red square.
+                                    }
+                            }
+                        }
+                        $cellContent .= ' ';
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+
+                        break;
+                    case 'h1':
+                    case 'h2':
+                    case 'h3':
+                    case 'h4':
+                    case 'h5':
+                    case 'h6':
+                    case 'ol':
+                    case 'ul':
+                    case 'p':
+                        if ($this->tableLevel > 0) {
+                            //    If we're inside a table, replace with a \n
+                            $cellContent .= "\n";
+                            $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                        } else {
+                            if ($cellContent > '') {
+                                $this->flushCell($sheet, $column, $row, $cellContent);
+                                ++$row;
+                            }
+                            $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                            $this->flushCell($sheet, $column, $row, $cellContent);
+
+                            if (isset($this->formats[$child->nodeName])) {
+                                $sheet->getStyle($column . $row)->applyFromArray($this->formats[$child->nodeName]);
+                            }
+
+                            ++$row;
+                            $column = 'A';
+                        }
+
+                        break;
+                    case 'li':
+                        if ($this->tableLevel > 0) {
+                            //    If we're inside a table, replace with a \n
+                            $cellContent .= "\n";
+                            $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                        } else {
+                            if ($cellContent > '') {
+                                $this->flushCell($sheet, $column, $row, $cellContent);
+                            }
+                            ++$row;
+                            $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                            $this->flushCell($sheet, $column, $row, $cellContent);
+                            $column = 'A';
+                        }
+
+                        break;
+                    case 'img':
+                        $this->insertImage($sheet, $column, $row, $attributeArray);
+
+                        break;
+                    case 'table':
+                        $this->flushCell($sheet, $column, $row, $cellContent);
+                        $column = $this->setTableStartColumn($column);
+                        if ($this->tableLevel > 1) {
+                            --$row;
+                        }
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                        $column = $this->releaseTableStartColumn();
+                        if ($this->tableLevel > 1) {
+                            ++$column;
+                        } else {
+                            ++$row;
+                        }
+
+                        break;
+                    case 'thead':
+                    case 'tbody':
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+
+                        break;
+                    case 'tr':
+                        $column = $this->getTableStartColumn();
+                        $cellContent = '';
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+
+                        if (isset($attributeArray['height'])) {
+                            $sheet->getRowDimension($row)->setRowHeight($attributeArray['height']);
+                        }
+
+                        ++$row;
+
+                        break;
+                    case 'th':
+                    case 'td':
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+
+                        // apply inline style
+                        $this->applyInlineStyle($sheet, $row, $column, $attributeArray);
+
+                        while (isset($this->rowspan[$column . $row])) {
+                            ++$column;
+                        }
+
+                        $this->flushCell($sheet, $column, $row, $cellContent);
+
+                        if (isset($attributeArray['rowspan'], $attributeArray['colspan'])) {
+                            //create merging rowspan and colspan
+                            $columnTo = $column;
+                            for ($i = 0; $i < (int) $attributeArray['colspan'] - 1; ++$i) {
+                                ++$columnTo;
+                            }
+                            $range = $column . $row . ':' . $columnTo . ($row + (int) $attributeArray['rowspan'] - 1);
+                            foreach (Coordinate::extractAllCellReferencesInRange($range) as $value) {
+                                $this->rowspan[$value] = true;
+                            }
+                            $sheet->mergeCells($range);
+                            $column = $columnTo;
+                        } elseif (isset($attributeArray['rowspan'])) {
+                            //create merging rowspan
+                            $range = $column . $row . ':' . $column . ($row + (int) $attributeArray['rowspan'] - 1);
+                            foreach (Coordinate::extractAllCellReferencesInRange($range) as $value) {
+                                $this->rowspan[$value] = true;
+                            }
+                            $sheet->mergeCells($range);
+                        } elseif (isset($attributeArray['colspan'])) {
+                            //create merging colspan
+                            $columnTo = $column;
+                            for ($i = 0; $i < (int) $attributeArray['colspan'] - 1; ++$i) {
+                                ++$columnTo;
+                            }
+                            $sheet->mergeCells($column . $row . ':' . $columnTo . $row);
+                            $column = $columnTo;
+                        } elseif (isset($attributeArray['bgcolor'])) {
+                            $sheet->getStyle($column . $row)->applyFromArray(
+                                [
+                                    'fill' => [
+                                        'fillType' => Fill::FILL_SOLID,
+                                        'color' => ['rgb' => $attributeArray['bgcolor']],
+                                    ],
+                                ]
+                            );
+                        }
+
+                        if (isset($attributeArray['width'])) {
+                            $sheet->getColumnDimension($column)->setWidth($attributeArray['width']);
+                        }
+
+                        if (isset($attributeArray['height'])) {
+                            $sheet->getRowDimension($row)->setRowHeight($attributeArray['height']);
+                        }
+
+                        if (isset($attributeArray['align'])) {
+                            $sheet->getStyle($column . $row)->getAlignment()->setHorizontal($attributeArray['align']);
+                        }
+
+                        if (isset($attributeArray['valign'])) {
+                            $sheet->getStyle($column . $row)->getAlignment()->setVertical($attributeArray['valign']);
+                        }
+
+                        if (isset($attributeArray['data-format'])) {
+                            $sheet->getStyle($column . $row)->getNumberFormat()->setFormatCode($attributeArray['data-format']);
+                        }
+
+                        ++$column;
+
+                        break;
+                    case 'body':
+                        $row = 1;
+                        $column = 'A';
+                        $cellContent = '';
+                        $this->tableLevel = 0;
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+
+                        break;
+                    default:
+                        $this->processDomElement($child, $sheet, $row, $column, $cellContent);
+                }
+            }
+        }
+    }
+
+    /**
+     * Loads PhpSpreadsheet from file into PhpSpreadsheet instance.
+     *
+     * @param string $pFilename
+     * @param Spreadsheet $spreadsheet
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function loadIntoExisting($pFilename, Spreadsheet $spreadsheet)
+    {
+        // Validate
+        if (!$this->canRead($pFilename)) {
+            throw new Exception($pFilename . ' is an Invalid HTML file.');
+        }
+
+        // Create a new DOM object
+        $dom = new DOMDocument();
+        // Reload the HTML file into the DOM object
+        $loaded = $dom->loadHTML(mb_convert_encoding($this->securityScanner->scanFile($pFilename), 'HTML-ENTITIES', 'UTF-8'));
+        if ($loaded === false) {
+            throw new Exception('Failed to load ' . $pFilename . ' as a DOM Document');
+        }
+
+        return $this->loadDocument($dom, $spreadsheet);
+    }
+
+    /**
+     * Spreadsheet from content.
+     *
+     * @param string $content
+     *
+     * @throws Exception
+     *
+     * @return Spreadsheet
+     */
+    public function loadFromString($content): Spreadsheet
+    {
+        //    Create a new DOM object
+        $dom = new DOMDocument();
+        //    Reload the HTML file into the DOM object
+        $loaded = $dom->loadHTML(mb_convert_encoding($this->securityScanner->scan($content), 'HTML-ENTITIES', 'UTF-8'));
+        if ($loaded === false) {
+            throw new Exception('Failed to load content as a DOM Document');
+        }
+
+        return $this->loadDocument($dom, new Spreadsheet());
+    }
+
+    /**
+     * Loads PhpSpreadsheet from DOMDocument into PhpSpreadsheet instance.
+     *
+     * @param DOMDocument $document
+     * @param Spreadsheet $spreadsheet
+     *
+     * @throws \PhpOffice\PhpSpreadsheet\Exception
+     *
+     * @return Spreadsheet
+     */
+    private function loadDocument(DOMDocument $document, Spreadsheet $spreadsheet): Spreadsheet
+    {
+        while ($spreadsheet->getSheetCount() <= $this->sheetIndex) {
+            $spreadsheet->createSheet();
+        }
+        $spreadsheet->setActiveSheetIndex($this->sheetIndex);
+
+        // Discard white space
+        $document->preserveWhiteSpace = false;
+
+        $row = 0;
+        $column = 'A';
+        $content = '';
+        $this->rowspan = [];
+        $this->processDomElement($document, $spreadsheet->getActiveSheet(), $row, $column, $content);
+
+        // Return
+        return $spreadsheet;
+    }
+
+    /**
+     * Get sheet index.
+     *
+     * @return int
+     */
+    public function getSheetIndex()
+    {
+        return $this->sheetIndex;
+    }
+
+    /**
+     * Set sheet index.
+     *
+     * @param int $pValue Sheet index
+     *
+     * @return HTML
+     */
+    public function setSheetIndex($pValue)
+    {
+        $this->sheetIndex = $pValue;
+
+        return $this;
+    }
+
+    /**
+     * Apply inline css inline style.
+     *
+     * NOTES :
+     * Currently only intended for td & th element,
+     * and only takes 'background-color' and 'color'; property with HEX color
+     *
+     * TODO :
+     * - Implement to other propertie, such as border
+     *
+     * @param Worksheet $sheet
+     * @param int $row
+     * @param string $column
+     * @param array $attributeArray
+     */
+    private function applyInlineStyle(&$sheet, $row, $column, $attributeArray)
+    {
+        if (!isset($attributeArray['style'])) {
+            return;
+        }
+
+        $cellStyle = $sheet->getStyle($column . $row);
+
+        // add color styles (background & text) from dom element,currently support : td & th, using ONLY inline css style with RGB color
+        $styles = explode(';', $attributeArray['style']);
+        foreach ($styles as $st) {
+            $value = explode(':', $st);
+            $styleName = isset($value[0]) ? trim($value[0]) : null;
+            $styleValue = isset($value[1]) ? trim($value[1]) : null;
+
+            if (!$styleName) {
+                continue;
+            }
+
+            switch ($styleName) {
+                case 'background':
+                case 'background-color':
+                    $styleColor = $this->getStyleColor($styleValue);
+
+                    if (!$styleColor) {
+                        continue 2;
+                    }
+
+                    $cellStyle->applyFromArray(['fill' => ['fillType' => Fill::FILL_SOLID, 'color' => ['rgb' => $styleColor]]]);
+
+                    break;
+                case 'color':
+                    $styleColor = $this->getStyleColor($styleValue);
+
+                    if (!$styleColor) {
+                        continue 2;
+                    }
+
+                    $cellStyle->applyFromArray(['font' => ['color' => ['rgb' => $styleColor]]]);
+
+                    break;
+
+                case 'border':
+                    $this->setBorderStyle($cellStyle, $styleValue, 'allBorders');
+
+                    break;
+
+                case 'border-top':
+                    $this->setBorderStyle($cellStyle, $styleValue, 'top');
+
+                    break;
+
+                case 'border-bottom':
+                    $this->setBorderStyle($cellStyle, $styleValue, 'bottom');
+
+                    break;
+
+                case 'border-left':
+                    $this->setBorderStyle($cellStyle, $styleValue, 'left');
+
+                    break;
+
+                case 'border-right':
+                    $this->setBorderStyle($cellStyle, $styleValue, 'right');
+
+                    break;
+
+                case 'font-size':
+                    $cellStyle->getFont()->setSize(
+                        (float) $styleValue
+                    );
+
+                    break;
+
+                case 'font-weight':
+                    if ($styleValue === 'bold' || $styleValue >= 500) {
+                        $cellStyle->getFont()->setBold(true);
+                    }
+
+                    break;
+
+                case 'font-style':
+                    if ($styleValue === 'italic') {
+                        $cellStyle->getFont()->setItalic(true);
+                    }
+
+                    break;
+
+                case 'font-family':
+                    $cellStyle->getFont()->setName(str_replace('\'', '', $styleValue));
+
+                    break;
+
+                case 'text-decoration':
+                    switch ($styleValue) {
+                        case 'underline':
+                            $cellStyle->getFont()->setUnderline(Font::UNDERLINE_SINGLE);
+
+                            break;
+                        case 'line-through':
+                            $cellStyle->getFont()->setStrikethrough(true);
+
+                            break;
+                    }
+
+                    break;
+
+                case 'text-align':
+                    $cellStyle->getAlignment()->setHorizontal($styleValue);
+
+                    break;
+
+                case 'vertical-align':
+                    $cellStyle->getAlignment()->setVertical($styleValue);
+
+                    break;
+
+                case 'width':
+                    $sheet->getColumnDimension($column)->setWidth(
+                        str_replace('px', '', $styleValue)
+                    );
+
+                    break;
+
+                case 'height':
+                    $sheet->getRowDimension($row)->setRowHeight(
+                        str_replace('px', '', $styleValue)
+                    );
+
+                    break;
+
+                case 'word-wrap':
+                    $cellStyle->getAlignment()->setWrapText(
+                        $styleValue === 'break-word'
+                    );
+
+                    break;
+
+                case 'text-indent':
+                    $cellStyle->getAlignment()->setIndent(
+                        (int) str_replace(['px'], '', $styleValue)
+                    );
+
+                    break;
+            }
+        }
+    }
+
+    /**
+     * Check if has #, so we can get clean hex.
+     *
+     * @param $value
+     *
+     * @return null|string
+     */
+    public function getStyleColor($value)
+    {
+        if (strpos($value, '#') === 0) {
+            return substr($value, 1);
+        }
+
+        return null;
+    }
+
+    /**
+     * @param Worksheet $sheet
+     * @param string    $column
+     * @param int       $row
+     * @param array     $attributes
+     *
+     * @throws \PhpOffice\PhpSpreadsheet\Exception
+     */
+    private function insertImage(Worksheet $sheet, $column, $row, array $attributes)
+    {
+        if (!isset($attributes['src'])) {
+            return;
+        }
+
+        $src = urldecode($attributes['src']);
+        $width = isset($attributes['width']) ? (float) $attributes['width'] : null;
+        $height = isset($attributes['height']) ? (float) $attributes['height'] : null;
+        $name = isset($attributes['alt']) ? (float) $attributes['alt'] : null;
+
+        $drawing = new Drawing();
+        $drawing->setPath($src);
+        $drawing->setWorksheet($sheet);
+        $drawing->setCoordinates($column . $row);
+        $drawing->setOffsetX(0);
+        $drawing->setOffsetY(10);
+        $drawing->setResizeProportional(true);
+
+        if ($name) {
+            $drawing->setName($name);
+        }
+
+        if ($width) {
+            $drawing->setWidth((int) $width);
+        }
+
+        if ($height) {
+            $drawing->setHeight((int) $height);
+        }
+
+        $sheet->getColumnDimension($column)->setWidth(
+            $drawing->getWidth() / 6
+        );
+
+        $sheet->getRowDimension($row)->setRowHeight(
+            $drawing->getHeight() * 0.9
+        );
+    }
+
+    /**
+     * Map html border style to PhpSpreadsheet border style.
+     *
+     * @param  string $style
+     *
+     * @return null|string
+     */
+    public function getBorderStyle($style)
+    {
+        switch ($style) {
+            case 'solid':
+                return Border::BORDER_THIN;
+            case 'dashed':
+                return Border::BORDER_DASHED;
+            case 'dotted':
+                return Border::BORDER_DOTTED;
+            case 'medium':
+                return Border::BORDER_MEDIUM;
+            case 'thick':
+                return Border::BORDER_THICK;
+            case 'none':
+                return Border::BORDER_NONE;
+            case 'dash-dot':
+                return Border::BORDER_DASHDOT;
+            case 'dash-dot-dot':
+                return Border::BORDER_DASHDOTDOT;
+            case 'double':
+                return Border::BORDER_DOUBLE;
+            case 'hair':
+                return Border::BORDER_HAIR;
+            case 'medium-dash-dot':
+                return Border::BORDER_MEDIUMDASHDOT;
+            case 'medium-dash-dot-dot':
+                return Border::BORDER_MEDIUMDASHDOTDOT;
+            case 'medium-dashed':
+                return Border::BORDER_MEDIUMDASHED;
+            case 'slant-dash-dot':
+                return Border::BORDER_SLANTDASHDOT;
+        }
+
+        return null;
+    }
+
+    /**
+     * @param Style  $cellStyle
+     * @param string $styleValue
+     * @param string $type
+     */
+    private function setBorderStyle(Style $cellStyle, $styleValue, $type)
+    {
+        [, $borderStyle, $color] = explode(' ', $styleValue);
+
+        $cellStyle->applyFromArray([
+            'borders' => [
+                $type => [
+                    'borderStyle' => $this->getBorderStyle($borderStyle),
+                    'color' => ['rgb' => $this->getStyleColor($color)],
+                ],
+            ],
+        ]);
+    }
+}