3v4l.org

run code in 300+ PHP versions simultaneously
<?php class One {} class Two {} function check(One|Two $object): void { var_dump($object); } check(new One); check(new Two);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
object(One)#1 (0) { } object(Two)#1 (0) { }

preferences:
73.32 ms | 406 KiB | 5 Q