Source for file str_split.php

<?php
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3 of the PHP license,         |
// | that is bundled with this package in the file LICENSE, and is        |
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// +----------------------------------------------------------------------+
// | Author: Aidan Lister <aidan@php.net>                                 |
// +----------------------------------------------------------------------+
//
// $Id: str_split.php,v 1.4 2004/05/27 09:03:33 aidan Exp $
//
 
 
/**
 * Replace str_split()
 *
 * PHP 5
 *
 * http://php.net/function.str_split
 *
 * @author        Aidan Lister <aidan@php.net>
 * @version       1.0
 */
if (!function_exists('str_split'))
{
    function str_split ($string, $split_length = 1)
    {
        if (!is_numeric($split_length)) {
            trigger_error('str_split() expects parameter 2 to be long, string given', E_USER_WARNING);
            return false;
        }
 
        if ($split_length < 1) {
            trigger_error('str_split() The the length of each segment must be greater then zero', E_USER_WARNING);
            return false;
        }
 
        preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches);
        return $matches[0];
    }
}
 
?>