60 lines
1.6 KiB
PHP
60 lines
1.6 KiB
PHP
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<?php
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/**
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* Replace str_split()
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*
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* @category PHP
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* @package PHP_Compat
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* @license LGPL - http://www.gnu.org/licenses/lgpl.html
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* @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net>
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* @link http://php.net/function.str_split
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* @author Aidan Lister <aidan@php.net>
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* @version $Revision$
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* @since PHP 5
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* @require PHP 4.0.0 (user_error)
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*/
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function php_compat_str_split($string, $split_length = 1)
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{
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if (!is_scalar($split_length)) {
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user_error('str_split() expects parameter 2 to be long, ' .
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gettype($split_length) . ' given', E_USER_WARNING);
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return false;
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}
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$split_length = (int) $split_length;
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if ($split_length < 1) {
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user_error('str_split() The length of each segment must be greater than zero', E_USER_WARNING);
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return false;
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}
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// Select split method
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if ($split_length < 65536) {
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// Faster, but only works for less than 2^16
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preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches);
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return $matches[0];
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} else {
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// Required due to preg limitations
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$arr = array();
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$idx = 0;
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$pos = 0;
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$len = strlen($string);
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while ($len > 0) {
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$blk = ($len < $split_length) ? $len : $split_length;
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$arr[$idx++] = substr($string, $pos, $blk);
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$pos += $blk;
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$len -= $blk;
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}
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return $arr;
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}
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}
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// Define
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if (!function_exists('str_split')) {
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function str_split($string, $split_length = 1)
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{
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return php_compat_str_split($string, $split_length);
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}
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}
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