3v4l.org

run code in 300+ PHP versions simultaneously
<?php if("-1" == -1) echo 'true';
Output for 5.6.38, 7.1.0 - 7.1.22, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
true

preferences:
58.61 ms | 407 KiB | 5 Q