3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(Date(DATE_ATOM, 1320224444000+0000));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(26) "43806-04-01T14:13:20+02:00"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.24, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30
string(26) "43806-04-01T13:13:20+01:00"
Output for 7.3.32 - 7.3.33, 8.0.13
string(26) "43806-04-01T12:13:20+00:00"

preferences:
196.66 ms | 401 KiB | 220 Q