3v4l.org

run code in 300+ PHP versions simultaneously
<?php $d =0; echo $d + + - - 1;
Output for 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
1

preferences:
55.6 ms | 406 KiB | 5 Q