escape.inc
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<?php
/**
* $Id$
*
* Handles database value escaping.
*
* 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 Michael Joseph, Jam Warehouse (Pty) Ltd, South Africa
*/
/**
* Apply stripslashes recursively.
* [From php.net/mysql-real-escape-string]
*/
function stripslashes_deep($value) {
$value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value);
return $value;
}
/**
* Quote a variable to make it safe for rdbms processing.
* This includes some SQL injection combatting side-effects.
* [From php.net/mysql-real-escape-string]
*/
//TODO: add tablename/fieldname escaping function from forum.pear:db
// move to pear::db in the medium term, instead of implementing XSS,sql injection prevention code
function quote($value) {
global $default;
// Stripslashes if we need to
if (get_magic_quotes_gpc()) {
$value = stripslashes_deep($value);
}
if (is_numeric($value)) {
return $value;
} elseif (is_bool($value)) {
return $value ? 1 : 0;
} elseif (is_null($value)) {
return 'NULL';
} else {
// only use the mysql api function if we're using mysql
// ??: is the api function still available to php if its not compiled in
// ??: it is in by default isn't it?
if ($default->dbType == "mysql") {
if (function_exists('mysql_real_escape_string')) {
// TODO: include the relevant connection id to take charset into account
$value = "'" . mysql_real_escape_string($value) . "'";
} elseif (function_exists('mysql_escape_string')) {
$value = "'" . mysql_escape_string($value) . "'";
}
} else {
$value = "'" . addslashes($value) . "'";
}
return $value;
}
}
?>