Online PHP editor | refs for 3UqEN

<?php interface FooInterface { public function dump(FooInterface $baz); } class Foo implements FooInterface { public function dump(FooInterface $baz) { var_dump($baz); } } class Bar extends Foo { public function dump(FooInterface $baz) { parent::dump($baz); } } (new Foo)->dump(new Bar); (new Bar)->dump(new Bar); (new Bar)->dump(new Foo);