3v4l.org

run code in 500+ PHP versions simultaneously
<?php echo date("Y-m-d H:i:s\n", strtotime('151011')); echo date("Y-m-d H:i:s\n", strtotime('20151011')); echo date("Y-m-d H:i:s\n", '20' . strtotime('151011'));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30
2015-10-12 15:10:11 2015-10-11 00:00:00 8353-07-12 09:43:31
Output for 7.3.32 - 7.3.33, 8.0.13, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
2015-10-12 15:10:11 2015-10-11 00:00:00 8353-07-12 10:43:31
preferences:
38.86 ms | 1153 KiB | 16 Q