3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump('0123' <=> '123');
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
int(0)
preferences:
61.35 ms | 406 KiB | 5 Q