3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class BaseClass { public function foo() { return '123'; } } final class ConcreteClass extends BaseClass { #[Override] public function foo(): void { } } $c = new ConcreteClass(); $c->foo();
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12

preferences:
46.13 ms | 406 KiB | 5 Q