note 127000 added to language.oop5.variance

Bear in mind that, although the PHP syntax does not allow stricter method parameter types, you can achieve it programmatically: <?php class AnimalFood { ... } class CatFood extends AnimalFood { ... } class Animal { public function eat(AnimalFood $food) { echo $this->name . " eats " . get_class($food); } } class Cat extends Animal { public function eat(AnimalFood $food) { if (!$food instanceof CatFood) { throw new \InvalidArgumentException(...); } parent::eat($food); } } ?> ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.5.135 (proxied: 91.205.194.1) ---- Manual Page -- https://php.net/manual/en/language.oop5.variance.php Edit -- https://main.php.net/note/edit/127000 Del: integrated -- https://main.php.net/note/delete/127000/integrated Del: useless -- https://main.php.net/note/delete/127000/useless Del: bad code -- https://main.php.net/note/delete/127000/bad+code Del: spam -- https://main.php.net/note/delete/127000/spam Del: non-english -- https://main.php.net/note/delete/127000/non-english Del: in docs -- https://main.php.net/note/delete/127000/in+docs Del: other reasons-- https://main.php.net/note/delete/127000 Reject -- https://main.php.net/note/reject/127000 Search -- https://main.php.net/manage/user-notes.php