1: <?php
 2: /**
 3:  * The Horde_Token_Null:: class provides a null implementation of the token
 4:  * driver.
 5:  *
 6:  * Copyright 2010-2012 Horde LLC (http://www.horde.org/)
 7:  *
 8:  * See the enclosed file COPYING for license information (LGPL). If you
 9:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
10:  *
11:  * @author   Michael Slusarz <slusarz@horde.org>
12:  * @category Horde
13:  * @package  Token
14:  */
15: class Horde_Token_Null extends Horde_Token_Base
16: {
17:     /**
18:      * Does the token exist?
19:      *
20:      * @return boolean  True if the token exists.
21:      */
22:     public function exists($tokenID)
23:     {
24:         return false;
25:     }
26: 
27:     /**
28:      * Add a token ID.
29:      *
30:      * @param string $tokenID  Token ID to add.
31:      */
32:     public function add($tokenID)
33:     {
34:     }
35: 
36:     /**
37:      * Delete all expired connection IDs.
38:      */
39:     public function purge()
40:     {
41:     }
42: }
43: