3v4l.org

run code in 500+ PHP versions simultaneously
<?php http://www.example.com/foo function foo($a) { // what does this do? } ?>
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6
preferences:
51.41 ms | 845 KiB | 4 Q