3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time ='2013-03-31 01:15:00'; $stamp = strtotime($time); for($i=0; $i<4; $i++){ echo date('Y-m-d H:i:s', strtotime("+{$i} hours", $stamp))."<br />\n"; }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 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 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2013-03-31 01:15:00<br /> 2013-03-31 03:15:00<br /> 2013-03-31 03:15:00<br /> 2013-03-31 04:15:00<br />
Output for 7.3.32 - 7.3.33, 8.0.13
2013-03-31 01:15:00<br /> 2013-03-31 02:15:00<br /> 2013-03-31 03:15:00<br /> 2013-03-31 04:15:00<br />
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3 - 5.0.5
2013-03-31 01:15:00<br /> 2013-03-31 03:15:00<br /> 2013-03-31 04:15:00<br /> 2013-03-31 05:15:00<br />
Output for 5.0.0 - 5.0.2
2013-03-31 00:00:00<br /> 2013-03-31 01:00:00<br /> 2013-03-31 03:00:00<br /> 2013-03-31 04:00:00<br />
preferences:
276.43 ms | 401 KiB | 460 Q