note 55343 added to function.is-null

I've tested different values in order to compare 'em with NULL with the help of different operators... <?php $arr=array(0, 0.0, '0', '0.0', '',FALSE,'false',NULL, 'NULL'); for ($i=0; $i<count($arr); $i++) $arr[$i]=array( $arr[$i], ((integer)($arr[$i]==NULL)) .((integer)($arr[$i]===NULL)) .((integer)is_null($arr[$i])) ); var_dump($arr); ?> it gave the following results: 0 : ==NULL 0.0 : ==NULL '0' : nothing worked =) '0.0' : nothing... '' : ==NULL FALSE : ==NULL 'false' : nothing NULL : ==NULL, ===NULL, is_null() 'NULL' : nothing enjoy =) ---- Submitter IP: 64.246.30.37 ---- Manual Page -- http://www.php.net/manual/en/function.is-null.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+55343 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+55343&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+55343&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+55343&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+55343&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+55343&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+55343&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+55343&report=yes Search -- http://master.php.net/manage/user-notes.php