3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { const NAME = '...'; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
preferences:
65.22 ms | 406 KiB | 5 Q