3v4l.org

run code in 300+ PHP versions simultaneously
<?php $timestamp = strtotime("2014-02-20 19:30:00"); $timestamp = strtotime('-2 day', $timestamp); echo $timestamp; echo ' '; echo time();
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.18, 5.4.20 - 5.4.45, 5.5.0 - 5.5.2, 5.5.4 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
1392748200 1391535213
Output for 5.4.19, 5.5.3
1392748200 1391535214
Output for 5.0.0 - 5.0.2
1392678000 1391535213

preferences:
208.81 ms | 401 KiB | 325 Q