note 32122 added to function.isset

Checking if a variable is set using isset() is the same as checking if a variable is different from NULL. if (isset($a)) { ... } // equivalent to if ($a !== NULL) { ... } // Note the !== operator -- Manual Page -- http://www.php.net/manual/en/function.isset.php Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+32122 Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+32122&report=yes Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+32122&report=yes