0,0 → 1,79 |
<?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> | |
// | Stephan Schmidt <schst@php.net> | |
// +----------------------------------------------------------------------+ |
// |
// $Id: strripos.php,v 1.24 2005/08/10 10:19:59 aidan Exp $ |
|
|
/** |
* Replace strripos() |
* |
* @category PHP |
* @package PHP_Compat |
* @link http://php.net/function.strripos |
* @author Aidan Lister <aidan@php.net> |
* @version $Revision: 1.24 $ |
* @since PHP 5 |
* @require PHP 4.0.0 (user_error) |
*/ |
if (!function_exists('strripos')) { |
function strripos($haystack, $needle, $offset = null) |
{ |
// Sanity check |
if (!is_scalar($haystack)) { |
user_error('strripos() expects parameter 1 to be scalar, ' . |
gettype($haystack) . ' given', E_USER_WARNING); |
return false; |
} |
|
if (!is_scalar($needle)) { |
user_error('strripos() expects parameter 2 to be scalar, ' . |
gettype($needle) . ' given', E_USER_WARNING); |
return false; |
} |
|
if (!is_int($offset) && !is_bool($offset) && !is_null($offset)) { |
user_error('strripos() expects parameter 3 to be long, ' . |
gettype($offset) . ' given', E_USER_WARNING); |
return false; |
} |
|
// Initialise variables |
$needle = strtolower($needle); |
$haystack = strtolower($haystack); |
$needle_fc = $needle{0}; |
$needle_len = strlen($needle); |
$haystack_len = strlen($haystack); |
$offset = (int) $offset; |
$leftlimit = ($offset >= 0) ? $offset : 0; |
$p = ($offset >= 0) ? |
$haystack_len : |
$haystack_len + $offset + 1; |
|
// Reverse iterate haystack |
while (--$p >= $leftlimit) { |
if ($needle_fc === $haystack{$p} && |
substr($haystack, $p, $needle_len) === $needle) { |
return $p; |
} |
} |
|
return false; |
} |
} |
|
?> |