3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo strtotime('2015-01-01').' '.strtotime('first day of +6 months 00:00:00');
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.30, 5.6.28, 7.0.14 - 7.1.0
1420066800 1420066800
Output for 5.5.24, 5.5.35, 5.6.21, 7.0.6
1420066800 1477954800
Output for 5.5.25 - 5.5.30, 5.5.34, 5.6.8 - 5.6.14, 5.6.20, 7.0.5
1420066800 1475272800
Output for 5.5.31 - 5.5.33, 5.6.15 - 5.6.19, 7.0.0 - 7.0.4
1420066800 1472680800
Output for 5.4.39 - 5.4.45
1420066800 1456786800
Output for 5.4.34 - 5.4.38
1420066800 1441058400
Output for 5.3.29, 5.4.31 - 5.4.32
1420066800 1425164400
Output for 5.1.0 - 5.2.17
1420066800
Output for 4.3.0 - 5.0.5
1420066800 -1