note 129060 added to function.isset

Empty array is set, but equal NULL. <?php $A=[]; var_dump($A); if(isset($A)) print "Isset...\n"; // TRUE if($A==NULL) print "[]==NULL\n"; // TRUE if($A!=NULL) print "[]!=NULL\n"; // FALSE if($A===NULL) print "[]===NULL\n"; // FALSE if($A!==NULL) print "[]!==NULL\n"; // TRUE ?> ---- Server IP: 45.112.84.4 Probable Submitter: 45.91.157.134 (proxied: 62.140.252.3) ---- Manual Page -- https://php.net/manual/en/function.isset.php Edit -- https://main.php.net/note/edit/129060 Del: integrated -- https://main.php.net/note/delete/129060/integrated Del: useless -- https://main.php.net/note/delete/129060/useless Del: bad code -- https://main.php.net/note/delete/129060/bad+code Del: spam -- https://main.php.net/note/delete/129060/spam Del: non-english -- https://main.php.net/note/delete/129060/non-english Del: in docs -- https://main.php.net/note/delete/129060/in+docs Del: other reasons-- https://main.php.net/note/delete/129060 Reject -- https://main.php.net/note/reject/129060 Search -- https://main.php.net/manage/user-notes.php