| 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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| 18 | // $Id: str_shuffle.php,v 1.6 2005/08/14 03:24:16 aidan Exp $
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| 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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| 52 | ?> |
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