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Added helper functions

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Dennis Eichhorn 2017-03-01 17:40:57 +01:00
parent 6eeb701858
commit 35248732ce
1 changed files with 80 additions and 0 deletions
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80
Datatypes/SmartDateTime.php
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@ -118,11 +118,27 @@ class SmartDateTime extends \DateTime
return $this;
}
/**
* Get end of month object
*
* @return SmartDateTime
*
* @since 1.0.0
* @author Dennis Eichhorn <d.eichhorn@oms.com>
*/
public function getEndOfMonth() : SmartDateTime
{
return new SmartDateTime($this->format('Y') . '-' . $this->format('m') . '-' . $this->getDaysOfMonth());
}
/**
* Get start of month object
*
* @return SmartDateTime
*
* @since 1.0.0
* @author Dennis Eichhorn <d.eichhorn@oms.com>
*/
public function getStartOfMonth() : SmartDateTime
{
return new SmartDateTime($this->format('Y') . '-' . $this->format('m') . '-01');
@ -154,4 +170,68 @@ class SmartDateTime extends \DateTime
return getdate(mktime(0, 0, 0, (int) $this->format('m'), 1, (int) $this->format('Y')))['wday'];
}
/**
* Is leap year in gregorian calendar
*
* @return bool
*
* @since 1.0.0
* @author Dennis Eichhorn <d.eichhorn@oms.com>
*/
public function isLeapYear() : bool
{
return self::leapYear((int) $this->format('Y'));
}
/**
* Test year if leap year in gregorian calendar
*
* @return bool
*
* @since 1.0.0
* @author Dennis Eichhorn <d.eichhorn@oms.com>
*/
public static function leapYear(int $year) : bool
{
$isLeap = false;
if ($year % 4 == 0) {
$isLeap = true;
}
if ($year % 100 == 0) {
$isLeap = false;
}
if ($year % 400 == 0) {
$isLeap = true;
}
return $isLeap;
}
/**
* Get day of week
*
* @return int
*
* @since 1.0.0
* @author Dennis Eichhorn <d.eichhorn@oms.com>
*/
public static function getDayOfWeek(int $y, int $m, int $d) : int
{
$w = 1;
$y = ($y - 1) % 400 + 1;
$ly = ($y - 1) / 4;
$ly = $ly - ($y - 1) / 100;
$ly = $ly + ($y - 1) / 400;
$ry = $y - 1 - $ly;
$w = $w + $ry;
$w = $w + 2 * $ly;
$w = $w + date("z", mktime(0, 0, 0, $m, $d, $y)) + 1;;
$w = ($w - 1) % 7 + 1;
return $w;
}
}