3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo strtotime('first day of this month 00:00:00');
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29, 5.6.28, 7.0.14 - 7.1.0
1401573600
Output for 5.5.35 - 5.6.7, 5.6.21, 7.0.6
1462053600
Output for 5.5.24 - 5.5.29, 5.5.34, 5.6.8 - 5.6.14, 5.6.20, 7.0.5
1459461600
Output for 5.5.30 - 5.5.33, 5.6.15 - 5.6.19, 7.0.0 - 7.0.4
1456786800
Output for 5.4.45
1441058400
Output for 5.4.43 - 5.4.44
1438380000
Output for 5.4.42
1435701600
Output for 5.4.39 - 5.4.41
1430431200
Output for 5.4.36 - 5.4.38
1422745200
Output for 5.4.34 - 5.4.35
1414796400
Output for 5.3.29, 5.4.30 - 5.4.32
1409522400
Output for 5.1.0 - 5.2.17
Output for 4.3.0 - 5.0.5
-1