3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date1 = strtotime('2012-05-13'); $date2 = strtotime('2012-05-13 + 2 weeks'); echo $date1.'<br>'.$date2;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.2 - 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 - 5.6.28, 7.0.0 - 7.0.20, 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
1336860000<br>1338069600
Output for 7.3.32 - 7.3.33, 8.0.13
1336867200<br>1338076800
Output for 5.1.0 - 5.1.1
1336860000<br>
preferences:
201.66 ms | 401 KiB | 385 Q