1: <?php
 2: /**
 3:  * Checks if the value is null
 4:  *
 5:  * Based on PHPUnit_Framework_Constraint_Null
 6:  *
 7:  * @author James Pepin <james@jamespepin.com>
 8:  */
 9: class Horde_Constraint_Null implements Horde_Constraint
10: {
11:     public function evaluate($value)
12:     {
13:         return is_null($value);
14:     }
15: }
16: