3v4l.org

run code in 300+ PHP versions simultaneously
<?php $elseif = '0'; if ($elseif) echo 'error'; elseif ($elseif === '0') echo 'ok';
Output for 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
ok
preferences:
47.66 ms | 406 KiB | 5 Q