[20116] | 1 | <?php |
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| 2 | // +----------------------------------------------------------------------+ |
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| 3 | // | PHP Version 4 | |
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| 4 | // +----------------------------------------------------------------------+ |
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| 5 | // | Copyright (c) 1997-2004 The PHP Group | |
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| 6 | // +----------------------------------------------------------------------+ |
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| 7 | // | This source file is subject to version 3.0 of the PHP license, | |
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| 8 | // | that is bundled with this package in the file LICENSE, and is | |
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| 9 | // | available at through the world-wide-web at | |
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| 10 | // | http://www.php.net/license/3_0.txt. | |
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| 11 | // | If you did not receive a copy of the PHP license and are unable to | |
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| 12 | // | obtain it through the world-wide-web, please send a note to | |
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| 13 | // | license@php.net so we can mail you a copy immediately. | |
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| 14 | // +----------------------------------------------------------------------+ |
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| 15 | // | Authors: Aidan Lister <aidan@php.net> | |
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| 16 | // +----------------------------------------------------------------------+ |
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| 17 | // |
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[20119] | 18 | // $Id: str_shuffle.php,v 1.6 2005/08/14 03:24:16 aidan Exp $ |
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[20116] | 19 | |
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| 20 | |
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| 21 | /** |
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| 22 | * Replace str_shuffle() |
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| 23 | * |
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| 24 | * @category PHP |
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| 25 | * @package PHP_Compat |
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| 26 | * @link http://php.net/function.str_shuffle |
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| 27 | * @author Aidan Lister <aidan@php.net> |
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| 28 | * @version $Revision: 1.6 $ |
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| 29 | * @since PHP 4.3.0 |
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| 30 | * @require PHP 4.0.0 (user_error) |
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| 31 | */ |
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| 32 | if (!function_exists('str_shuffle')) { |
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| 33 | function str_shuffle($str) |
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| 34 | { |
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| 35 | // Init |
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| 36 | $str = (string) $str; |
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| 37 | |
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| 38 | // Seed |
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| 39 | list($usec, $sec) = explode(' ', microtime()); |
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| 40 | $seed = (float) $sec + ((float) $usec * 100000); |
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| 41 | mt_srand($seed); |
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| 42 | |
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| 43 | // Shuffle |
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| 44 | for ($new = '', $len = strlen($str); $len > 0; $str{$p} = $str{$len}) { |
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| 45 | $new .= $str{$p = mt_rand(0, --$len)}; |
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| 46 | } |
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| 47 | |
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| 48 | return $new; |
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| 49 | } |
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| 50 | } |
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| 51 | |
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[19792] | 52 | ?> |
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