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1 <?php 1 <?php
2 // +----------------------------------------------------------------------+ 2 // +----------------------------------------------------------------------+
3 // | PHP Version 4 | 3 // | PHP Version 4 |
4 // +----------------------------------------------------------------------+ 4 // +----------------------------------------------------------------------+
5 // | Copyright (c) 1997-2004 The PHP Group | 5 // | Copyright (c) 1997-2004 The PHP Group |
6 // +----------------------------------------------------------------------+ 6 // +----------------------------------------------------------------------+
7 // | This source file is subject to version 3.0 of the PHP license, | 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 | 8 // | that is bundled with this package in the file LICENSE, and is |
9 // | available at through the world-wide-web at | 9 // | available at through the world-wide-web at |
10 // | http://www.php.net/license/3_0.txt. | 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 | 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 | 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. | 13 // | license@php.net so we can mail you a copy immediately. |
14 // +----------------------------------------------------------------------+ 14 // +----------------------------------------------------------------------+
15 // | Authors: Aidan Lister <aidan@php.net> | 15 // | Authors: Aidan Lister <aidan@php.net> |
16 // +----------------------------------------------------------------------+ 16 // +----------------------------------------------------------------------+
17 // 17 //
18 // $Id: str_split.php,v 1.15 2005/06/18 12:15:32 aidan Exp $ 18 // $Id: str_split.php,v 1.15 2005/06/18 12:15:32 aidan Exp $
19   19  
20   20  
21 /** 21 /**
22 * Replace str_split() 22 * Replace str_split()
23 * 23 *
24 * @category PHP 24 * @category PHP
25 * @package PHP_Compat 25 * @package PHP_Compat
26 * @link http://php.net/function.str_split 26 * @link http://php.net/function.str_split
27 * @author Aidan Lister <aidan@php.net> 27 * @author Aidan Lister <aidan@php.net>
28 * @version $Revision: 1.15 $ 28 * @version $Revision: 1.15 $
29 * @since PHP 5 29 * @since PHP 5
30 * @require PHP 4.0.0 (user_error) 30 * @require PHP 4.0.0 (user_error)
31 */ 31 */
32 if (!function_exists('str_split')) { 32 if (!function_exists('str_split')) {
33 function str_split($string, $split_length = 1) 33 function str_split($string, $split_length = 1)
34 { 34 {
35 if (!is_scalar($split_length)) { 35 if (!is_scalar($split_length)) {
36 user_error('str_split() expects parameter 2 to be long, ' . 36 user_error('str_split() expects parameter 2 to be long, ' .
37 gettype($split_length) . ' given', E_USER_WARNING); 37 gettype($split_length) . ' given', E_USER_WARNING);
38 return false; 38 return false;
39 } 39 }
40   40  
41 $split_length = (int) $split_length; 41 $split_length = (int) $split_length;
42 if ($split_length < 1) { 42 if ($split_length < 1) {
43 user_error('str_split() The length of each segment must be greater than zero', E_USER_WARNING); 43 user_error('str_split() The length of each segment must be greater than zero', E_USER_WARNING);
44 return false; 44 return false;
45 } 45 }
46 46
47 // Select split method 47 // Select split method
48 if ($split_length < 65536) { 48 if ($split_length < 65536) {
49 // Faster, but only works for less than 2^16 49 // Faster, but only works for less than 2^16
50 preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches); 50 preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches);
51 return $matches[0]; 51 return $matches[0];
52 } else { 52 } else {
53 // Required due to preg limitations 53 // Required due to preg limitations
54 $arr = array(); 54 $arr = array();
55 $idx = 0; 55 $idx = 0;
56 $pos = 0; 56 $pos = 0;
57 $len = strlen($string); 57 $len = strlen($string);
58   58  
59 while ($len > 0) { 59 while ($len > 0) {
60 $blk = ($len < $split_length) ? $len : $split_length; 60 $blk = ($len < $split_length) ? $len : $split_length;
61 $arr[$idx++] = substr($string, $pos, $blk); 61 $arr[$idx++] = substr($string, $pos, $blk);
62 $pos += $blk; 62 $pos += $blk;
63 $len -= $blk; 63 $len -= $blk;
64 } 64 }
65   65  
66 return $arr; 66 return $arr;
67 } 67 }
68 } 68 }
69 } 69 }
70   70  
71 ?> 71 ?>
72 72