82 lines
3.2 KiB
PHP
82 lines
3.2 KiB
PHP
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<?php
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2004 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 3.0 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/3_0.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Aidan Lister <aidan@php.net> |
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// | Stephan Schmidt <schst@php.net> |
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// +----------------------------------------------------------------------+
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//
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// $Id: strripos.php,v 1.1 2005/07/23 05:56:03 Tony Exp $
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/**
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* Replace strripos()
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*
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* @category PHP
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* @package PHP_Compat
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* @link http://php.net/function.strripos
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* @author Aidan Lister <aidan@php.net>
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* @author Stephan Schmidt <schst@php.net>
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* @version $Revision: 1.1 $
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* @since PHP 5
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* @require PHP 4.0.0 (user_error)
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*/
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if (!function_exists('strripos')) {
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function strripos($haystack, $needle, $offset = null)
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{
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if (!is_scalar($haystack)) {
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user_error('strripos() expects parameter 1 to be scalar, ' .
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gettype($haystack) . ' given', E_USER_WARNING);
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return false;
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}
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if (!is_scalar($needle)) {
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user_error('strripos() expects parameter 2 to be scalar, ' .
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gettype($needle) . ' given', E_USER_WARNING);
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return false;
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}
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if (!is_int($offset) && !is_bool($offset) && !is_null($offset)) {
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user_error('strripos() expects parameter 3 to be long, ' .
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gettype($offset) . ' given', E_USER_WARNING);
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return false;
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}
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// Manipulate the string if there is an offset
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$fix = 0;
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if (!is_null($offset)) {
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// If the offset is larger than the haystack, return
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if (abs($offset) >= strlen($haystack)) {
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return false;
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}
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// Check whether offset is negative or positive
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if ($offset > 0) {
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$haystack = substr($haystack, $offset, strlen($haystack) - $offset);
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// We need to add this to the position of the needle
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$fix = $offset;
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} else {
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$haystack = substr($haystack, 0, strlen($haystack) + $offset);
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}
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}
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$segments = explode(strtolower($needle), strtolower($haystack));
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$last_seg = count($segments) - 1;
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$position = strlen($haystack) + $fix - strlen($segments[$last_seg]) - strlen($needle);
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return $position;
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}
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}
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?>
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