sanitize.inc
1.46 KB
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<?php
/**
* $Id$
*
* This page is meant to provide functions to prevent XSS cracks.
*
* Copyright (c) 2003 Jam Warehouse http://www.jamwarehouse.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @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);
}
?>