3v4l.org

run code in 300+ PHP versions simultaneously
<?php $datetime = new \DateTime('2022-07-31 00:00:00'); var_export($datetime->format('Y-m-d H:i:s')); $datetime->modify('last day of previous month'); var_export($datetime->format('Y-m-d H:i:s'));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
'2022-07-31 00:00:00''2022-06-30 00:00:00'
preferences:
87.75 ms | 406 KiB | 5 Q