3v4l.org

run code in 300+ PHP versions simultaneously
<?php $action = empty($_POST['action']) ? 'default' : $_POST['action'];
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
104.36 ms | 402 KiB | 89 Q