Rev Author Line No. Line
130 kaklik 1 <?php
2 // +----------------------------------------------------------------------+
3 // | PHP Version 4 |
4 // +----------------------------------------------------------------------+
5 // | Copyright (c) 1997-2004 The PHP Group |
6 // +----------------------------------------------------------------------+
7 // | This source file is subject to version 3.0 of the PHP license, |
8 // | that is bundled with this package in the file LICENSE, and is |
9 // | available at through the world-wide-web at |
10 // | http://www.php.net/license/3_0.txt. |
11 // | If you did not receive a copy of the PHP license and are unable to |
12 // | obtain it through the world-wide-web, please send a note to |
13 // | license@php.net so we can mail you a copy immediately. |
14 // +----------------------------------------------------------------------+
15 // | Authors: Aidan Lister <aidan@php.net> |
16 // +----------------------------------------------------------------------+
17 //
18 // $Id: str_split.php,v 1.15 2005/06/18 12:15:32 aidan Exp $
19  
20  
21 /**
22 * Replace str_split()
23 *
24 * @category PHP
25 * @package PHP_Compat
26 * @link http://php.net/function.str_split
27 * @author Aidan Lister <aidan@php.net>
28 * @version $Revision: 1.15 $
29 * @since PHP 5
30 * @require PHP 4.0.0 (user_error)
31 */
32 if (!function_exists('str_split')) {
33 function str_split($string, $split_length = 1)
34 {
35 if (!is_scalar($split_length)) {
36 user_error('str_split() expects parameter 2 to be long, ' .
37 gettype($split_length) . ' given', E_USER_WARNING);
38 return false;
39 }
40  
41 $split_length = (int) $split_length;
42 if ($split_length < 1) {
43 user_error('str_split() The length of each segment must be greater than zero', E_USER_WARNING);
44 return false;
45 }
46  
47 // Select split method
48 if ($split_length < 65536) {
49 // Faster, but only works for less than 2^16
50 preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches);
51 return $matches[0];
52 } else {
53 // Required due to preg limitations
54 $arr = array();
55 $idx = 0;
56 $pos = 0;
57 $len = strlen($string);
58  
59 while ($len > 0) {
60 $blk = ($len < $split_length) ? $len : $split_length;
61 $arr[$idx++] = substr($string, $pos, $blk);
62 $pos += $blk;
63 $len -= $blk;
64 }
65  
66 return $arr;
67 }
68 }
69 }
70  
71 ?>