3v4l.org

run code in 500+ PHP versions simultaneously
<?php if ('null') echo 'Passes!'; else echo 'Fails :(';
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
Passes!
preferences:
69.66 ms | 881 KiB | 4 Q