3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = new DateInterval('PT23H'); echo $i->format('%h');
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.26, 8.0.0 - 8.0.13, 8.1rc1 - rc3
23

preferences:
28.42 ms | 461 KiB | 5 Q