sanitize.inc
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<?php
/**
* $Id$
*
* This page is meant to provide functions to prevent XSS cracks.
*
* The contents of this file are subject to the KnowledgeTree Public
* License Version 1.1 ("License"); You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.ktdms.com/KPL
*
* Software distributed under the License is distributed on an "AS IS"
* basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is: KnowledgeTree Open Source
*
* The Initial Developer of the Original Code is The Jam Warehouse Software
* (Pty) Ltd, trading as KnowledgeTree.
* Portions created by The Jam Warehouse Software (Pty) Ltd are Copyright
* (C) 2006 The Jam Warehouse Software (Pty) Ltd;
* All Rights Reserved.
*
*
* @version $Revision$
* @author Andrew Glen-Young <andrew@jamwarehouse.com>, Jam Warehouse (Pty) Ltd, South Africa
*/
/**
* Accepts a web encoded string and outputs a "clean" string.
*/
function sanitize($string) {
// This should be set if you've read the INSTALL instructions.
// Better to be safe though.
if (get_magic_quotes_gpc()) {
$string = strip_tags(urldecode(trim($string)));
} else {
$string = addslashes(strip_tags(urldecode(trim($string))));
}
// This might be a little too aggressive
$pattern = "([^[:alpha:]|^_\.\ \:-])";
return ereg_replace($pattern, '', $string);
}
?>