3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class DbRepository { public function save($object) { } } class ExtendedDbRepository extends DbRepository { public function save($object) { } } class Foo { /** @var DbRepository */ var $repository; public function __construct(DbRepository $repository) { $this->repository = $repository; } } $foo = new Foo(new ExtendedDbRepository());
based on VvIlk
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0