3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $start = new DateTime('2015-05-31'); $start->modify('first day of this month'); $end = new DateTime(); $end->modify('first day of next month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); foreach ($period as $dt) { echo $dt->format("Y-m") . PHP_EOL; }
based on pv8gR
Output for 5.4.8 - 5.4.45, 5.6.28, 7.0.20 - 7.2.0
2015-05 2015-06 2015-07 2015-08 2015-09 2015-10
Output for 5.5.24, 5.5.35, 5.6.21, 7.0.6
2015-05 2015-06 2015-07 2015-08 2015-09 2015-10 2015-11 2015-12 2016-01 2016-02 2016-03 2016-04 2016-05 2016-06
Output for 5.5.25 - 5.5.30, 5.5.34, 5.6.8 - 5.6.14, 5.6.20, 7.0.5
2015-05 2015-06 2015-07 2015-08 2015-09 2015-10 2015-11 2015-12 2016-01 2016-02 2016-03 2016-04 2016-05
Output for 5.5.31 - 5.5.33, 5.6.15 - 5.6.19, 7.0.0 - 7.0.4
2015-05 2015-06 2015-07 2015-08 2015-09 2015-10 2015-11 2015-12 2016-01 2016-02 2016-03 2016-04
Output for 5.3.18 - 5.4.7
2015-05 2015-06 2015-07 2015-08 2015-09 2015-10 2015-11