3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_DumP(emPty(4));
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
bool(false)
preferences:
66.68 ms | 971 KiB | 4 Q