3v4l.org

run code in 300+ PHP versions simultaneously
<?php $firstDayNextMonth = date('Y-m-01', strtotime('first day of this month - 2 months', time())); echo $firstDayNextMonth;
Output for 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 - 7.1.20, 7.2.0 - 7.2.6
2014-05-01
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
1970-01-01
preferences:
167.9 ms | 402 KiB | 219 Q