3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = new DateTime('2019-12-10 14:00'); echo $date->format('Y-m-d\TH:i:s');
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.27, 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
2019-12-10T14:00:00

preferences:
57.56 ms | 460 KiB | 5 Q