3v4l.org

run code in 500+ PHP versions simultaneously
<?php $interval = new DateInterval("2008-05-11T15:30:00Z/2007-03-01T13:00:00Z"); var_dump($interval->invert);
Output for 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
int(1)
preferences:
114.1 ms | 1412 KiB | 4 Q