3v4l.org

run code in 300+ PHP versions simultaneously
<?php date_default_timezone_set("Europe/Bratislava"); $a = new \DateTime("0001-01-01"); echo $a->format(DateTime::ATOM);
Output for 5.5.25 - 5.5.38, 5.6.9 - 5.6.14, 7.3.2 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0001-01-01T00:00:00+00:57
Output for 5.5.0 - 5.5.24, 5.6.0 - 5.6.8, 5.6.15 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.1
0001-01-01T00:00:00+01:00
preferences:
270.19 ms | 403 KiB | 330 Q