3v4l.org

run code in 500+ PHP versions simultaneously
<?php function x(Container $a): Container { return "A"; }
Output for 8.2.31 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
preferences:
27.26 ms | 1136 KiB | 7 Q