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 1.1.2 ("License"); You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.knowledgetree.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.
*
* All copies of the Covered Code must include on each user interface screen:
* (i) the "Powered by KnowledgeTree" logo and
* (ii) the KnowledgeTree copyright notice
* in the same form as they appear in the distribution. See the License for
* requirements.
*
* 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) 2007 The Jam Warehouse Software (Pty) Ltd;
* All Rights Reserved.
* Contributor( s): ______________________________________
*/
/**
* 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:]|^_\.\ \:-])";
// Allow numeric characters
$pattern = "([^[:alnum:]|^_\.\ \:-])";
return ereg_replace($pattern, '', $string);
}
?>