Source for file MagicQuotesUtil.php

1     <?php
2     // MagicQuotesUtil: A Utility Class for Handling Magic Quotes
3     // Copyright (C) 2003 Lukas Feiler
4     // 
5     // This library is free software; you can redistribute it and/or
6     // modify it under the terms of the GNU Lesser General Public
7     // License as published by the Free Software Foundation; either
8     // version 2.1 of the License, or (at your option) any later version.
9     // 
10    // This library is distributed in the hope that it will be useful,
11    // but WITHOUT ANY WARRANTY; without even the implied warranty of
12    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    // Lesser General Public License for more details.
14    // 
15    // You should have received a copy of the GNU Lesser General Public
16    // License along with this library; if not, write to the Free Software
17    // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18    
19    /**This file contains the class MagicQuotesUtil.
20    *
21    * @package MagicQuotesUtil
22    * @author Lukas Feiler <lukas.feiler@chello.at>
23    * @copyright Lukas Feiler 2003
24    * @filesource
25    */
26    
27    /**A Utility Class for handling MagicQuotes.
28    *
29    * This class provides just one public method: undo. Calling this method will undo all magic quoting performed by
30    * the PHP Engine. Using this class allows you to write code that works with every setup - magic quotes enabled
31    * or not. Usage:
32    * <code>
33    * require_once('MagicQuotesUtil/MagicQuotesUtil.php');
34    * MagicQuotesUtil::undo();
35    * </code>
36    * Please note that global variables will stay untouched!
37    * 
38    * @author Lukas Feiler <lukas.feiler@chello.at>
39    * @version 0.1.9
40    * @copyright Lukas Feiler 2003
41    * @package MagicQuotesUtil
42    * @static
43    */
44    class MagicQuotesUtil {
45        
46        /**Undoes all magic quoting performed by the PHP Engine.
47    	*
48    	* This method removes the magic quotes from $HTTP_GET_VARS,
49    	* $HTTP_POST_VARS, $HTTP_COOKIE_VARS, $_REQUEST, $_GET, $_POST
50    	* and $_COOKIE. Please note that global variables will stay untouched!
51    	* You can call this method only once. Calling it a second time will
52    	* have no effect.
53    	* @access public
54    	*/
55        function undo()
56        {
57            global $HTTP_GET_VARS $HTTP_POST_VARS $HTTP_COOKIE_VARS    
58            static $called;
59            
60            if ($called) {
61                return;
62            }
63            MagicQuotesUtil::_removeFromArray($_REQUEST);
64            MagicQuotesUtil::_removeFromArray($_GET);
65            MagicQuotesUtil::_removeFromArray($_POST);
66            MagicQuotesUtil::_removeFromArray($_COOKIE);
67            MagicQuotesUtil::_removeFromArray($HTTP_GET_VARS);
68            MagicQuotesUtil::_removeFromArray($HTTP_POST_VARS);
69            MagicQuotesUtil::_removeFromArray($HTTP_COOKIE_VARS);
70            $called = true;
71        }
72        
73        /**Removes all magic quotes from the array passed by reference.
74    	* @access private
75    	*/
76        function _removeFromArray(&$array)
77        {
78            if (is_array($array)) {
79                while (list($key, $val) = each($array)) {
80                    if (is_array($array[$key])) {
81                        continue;
82                    }
83                    if (ini_get('magic_quotes_sybase') && get_magic_quotes_gpc()) {
84                        $array[$key] = str_replace("''","'",$array[$key]);
85                    } elseif (get_magic_quotes_gpc()) {
86                        $array[$key] = stripslashes($array[$key]);
87                    }
88                }
89            }
90        }
91    }
92    ?>