3v4l.org

run code in 500+ PHP versions simultaneously
<?php interface FooInterface { public function bar(): FooInterface; } class Foo implements FooInterface { public function bar(): static { return $this; } } class Qux extends Foo { public function bar(): FooInterface { return $this; } }
Output for 8.5.0 - 8.5.7
Fatal error: Declaration of Qux::bar(): FooInterface must be compatible with Foo::bar(): static in /in/J04NA on line 19 Stack trace: #0 {main}
Process exited with code 255.
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.22
Fatal error: Declaration of Qux::bar(): FooInterface must be compatible with Foo::bar(): static in /in/J04NA on line 19
Process exited with code 255.
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