3v4l.org

run code in 500+ PHP versions simultaneously
<?php $d = 0; echo $d + + - - 1; ?>
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6
1
preferences:
39.25 ms | 848 KiB | 4 Q