note 124712 added to language.oop5.variance

Covariance also works with general type-hinting, note also the interface: interface xInterface { public function y() : object; } abstract class x implements xInterface { abstract public function y() : object; } class a extends x { public function y() : \DateTime { return new \DateTime("now"); } } $a = new a; echo '<pre>'; var_dump($a->y()); echo '</pre>'; ---- Server IP: 45.112.84.4 Probable Submitter: 38.142.137.34 (proxied: 36.72.16.44) ---- Manual Page -- http://php.net/manual/en/language.oop5.variance.php Edit -- https://master.php.net/note/edit/124712 Del: integrated -- https://master.php.net/note/delete/124712/integrated Del: useless -- https://master.php.net/note/delete/124712/useless Del: bad code -- https://master.php.net/note/delete/124712/bad+code Del: spam -- https://master.php.net/note/delete/124712/spam Del: non-english -- https://master.php.net/note/delete/124712/non-english Del: in docs -- https://master.php.net/note/delete/124712/in+docs Del: other reasons-- https://master.php.net/note/delete/124712 Reject -- https://master.php.net/note/reject/124712 Search -- https://master.php.net/manage/user-notes.php