3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start = new DateTime('2013-05-01'); $end = new DateTime('2013-08-30'); $interval = DateInterval::createFromDateString('1 day'); $period = new DatePeriod($start, $interval, $end); foreach ($period as $dt) { if ($dt->format("N") == 2 || $dt->format("N") == 4) { echo $dt->format("l Y-m-d") . "<br>\n"; } }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Thursday 2013-05-02<br> Tuesday 2013-05-07<br> Thursday 2013-05-09<br> Tuesday 2013-05-14<br> Thursday 2013-05-16<br> Tuesday 2013-05-21<br> Thursday 2013-05-23<br> Tuesday 2013-05-28<br> Thursday 2013-05-30<br> Tuesday 2013-06-04<br> Thursday 2013-06-06<br> Tuesday 2013-06-11<br> Thursday 2013-06-13<br> Tuesday 2013-06-18<br> Thursday 2013-06-20<br> Tuesday 2013-06-25<br> Thursday 2013-06-27<br> Tuesday 2013-07-02<br> Thursday 2013-07-04<br> Tuesday 2013-07-09<br> Thursday 2013-07-11<br> Tuesday 2013-07-16<br> Thursday 2013-07-18<br> Tuesday 2013-07-23<br> Thursday 2013-07-25<br> Tuesday 2013-07-30<br> Thursday 2013-08-01<br> Tuesday 2013-08-06<br> Thursday 2013-08-08<br> Tuesday 2013-08-13<br> Thursday 2013-08-15<br> Tuesday 2013-08-20<br> Thursday 2013-08-22<br> Tuesday 2013-08-27<br> Thursday 2013-08-29<br>
preferences:
172.85 ms | 409 KiB | 5 Q