3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = new DateTime( '2016-08-30' ); echo $date->format( 'Y-m-d' ), "\n"; $date->modify( 'last day of 6 month' ); echo $date->format( 'Y-m-d' ), "\n";
Output for 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.29, 8.0.0 - 8.0.19, 8.1.0 - 8.1.6
2016-08-30 2017-02-28

preferences:
95.67 ms | 410 KiB | 5 Q