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 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
preferences:
51.11 ms | 406 KiB | 5 Q