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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;
- }
- }
- }
-
- ?>