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<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/3_0.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Aidan Lister <aidan@php.net> |
// +----------------------------------------------------------------------+
//
// $Id: str_split.php,v 1.15 2005/06/18 12:15:32 aidan Exp $
/**
* Replace str_split()
*
* @category PHP
* @package PHP_Compat
* @link http://php.net/function.str_split
* @author Aidan Lister <aidan@php.net>
* @version $Revision: 1.15 $
* @since PHP 5
* @require PHP 4.0.0 (user_error)
*/
if (!function_exists('str_split')) {
function str_split($string, $split_length = 1)
{
if (!is_scalar($split_length)) {
user_error('str_split() expects parameter 2 to be long, ' .
gettype($split_length) . ' given', E_USER_WARNING);
return false;
}
$split_length = (int) $split_length;
if ($split_length < 1) {
user_error('str_split() The length of each segment must be greater than zero', E_USER_WARNING);
return false;
}
// Select split method
if ($split_length < 65536) {
// Faster, but only works for less than 2^16
preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches);
return $matches[0];
} else {
// Required due to preg limitations
$arr = array();
$idx = 0;
$pos = 0;
$len = strlen($string);
while ($len > 0) {
$blk = ($len < $split_length) ? $len : $split_length;
$arr[$idx++] = substr($string, $pos, $blk);
$pos += $blk;
$len -= $blk;
}
return $arr;
}
}
}
?>
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