3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class Base { protected function doit() { throw new \RuntimeException('Not implemented'); } } class Closed extends Base { protected function doit() { echo 'done!'; } } class Opener extends Base { public function execute(Closed $closed) { $closed->doit(); } } $closed = new Closed(); $opener = new Opener(); $opener->execute($closed);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
done!

preferences:
73.17 ms | 407 KiB | 5 Q