3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Foo { public function process($request, Foo $next); } class Bar implements Foo { public function process($request, Foo $next = null) { } } new Bar();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
175.53 ms | 403 KiB | 169 Q