note 124099 added to class.countable

Unlike an array, an object of a class that implements Countable and has 0 elements is not considered empty: class C implements Countable { public function count() { return 0; } } $a = []; var_dump($a); echo 'array is empty: '; var_dump(empty($a)); $c = new C; var_dump($c); echo 'Countable is empty: ' ; var_dump(empty($c)); Output: array(0) { } array is empty: bool(true) object(C)#1 (0) { } Countable is empty: bool(false) ---- Server IP: 208.43.231.9 Probable Submitter: 82.199.157.54 (proxied: 2601:c2:c380:1a30:3cff:434:cb65:8b67) ---- Manual Page -- http://php.net/manual/en/class.countable.php Edit -- https://master.php.net/note/edit/124099 Del: integrated -- https://master.php.net/note/delete/124099/integrated Del: useless -- https://master.php.net/note/delete/124099/useless Del: bad code -- https://master.php.net/note/delete/124099/bad+code Del: spam -- https://master.php.net/note/delete/124099/spam Del: non-english -- https://master.php.net/note/delete/124099/non-english Del: in docs -- https://master.php.net/note/delete/124099/in+docs Del: other reasons-- https://master.php.net/note/delete/124099 Reject -- https://master.php.net/note/reject/124099 Search -- https://master.php.net/manage/user-notes.php