3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dt = new DateTime('0000-00-00'); echo $dt->format('U');
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
-62169985172
Output for 7.3.32 - 7.3.33, 8.0.13
-62169984000
preferences:
183.9 ms | 401 KiB | 293 Q