3v4l.org

run code in 500+ PHP versions simultaneously
<?php date_default_timezone_set('UTC'); echo date('Y-m-d H:i:s', (strtotime('2018-07-03T21:00:00.000Z') -3600 * 4));
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
2018-07-03 17:00:00
preferences:
108.44 ms | 1941 KiB | 4 Q