diff --git a/PhpOffice/PhpWord/Shared/PCLZip/pclzip.lib.php b/PhpOffice/PhpWord/Shared/PCLZip/pclzip.lib.php
index 6292749..79d59c6 100755
--- a/PhpOffice/PhpWord/Shared/PCLZip/pclzip.lib.php
+++ b/PhpOffice/PhpWord/Shared/PCLZip/pclzip.lib.php
@@ -1597,7 +1597,7 @@ class PclZip
                     if (is_string($p_options_list[$i + 1])) {
 
                         // ----- Remove spaces
-                        $p_options_list[$i + 1] = strtr($p_options_list[$i + 1], ' ', '');
+                        $p_options_list[$i + 1] = \str_replace(' ', '', $p_options_list[$i + 1]);
 
                         // ----- Parse items
                         $v_work_list = explode(",", $p_options_list[$i + 1]);
diff --git a/tcpdf/tcpdf_parser.php b/tcpdf/tcpdf_parser.php
index 4156230..2b70ead 100755
--- a/tcpdf/tcpdf_parser.php
+++ b/tcpdf/tcpdf_parser.php
@@ -600,7 +600,7 @@ class TCPDF_PARSER {
 					++$offset;
 					if (($char == '<') AND (preg_match('/^([0-9A-Fa-f\x09\x0a\x0c\x0d\x20]+)>/iU', substr($this->pdfdata, $offset), $matches) == 1)) {
 						// remove white space characters
-						$objval = strtr($matches[1], "\x09\x0a\x0c\x0d\x20", '');
+						$objval = \str_replace(["\x09", "\x0a", "\x0c", "\x0d", "\x20"], '', $matches[1]);
 						$offset += strlen($matches[0]);
 					} elseif (($endpos = strpos($this->pdfdata, '>', $offset)) !== FALSE) {
 						$offset = $endpos + 1;