3v4l.org

run code in 300+ PHP versions simultaneously
<?php unserialize(serialize(new __PHP_Incomplete_Class));
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
preferences:
48.83 ms | 478 KiB | 5 Q