3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { } class FooFoo extends Foo {} class Bar { public function foo(FooFoo $object) { return $object; } } class Baz extends Bar { public function foo(Foo $object) { return $object; } }
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of Baz::foo(Foo $object) should be compatible with Bar::foo(FooFoo $object) in /in/S9CS3 on line 17
Output for 5.6.38
Strict Standards: Declaration of Baz::foo() should be compatible with Bar::foo(FooFoo $object) in /in/S9CS3 on line 17
preferences:
105.82 ms | 1461 KiB | 4 Q