3v4l.org

run code in 300+ PHP versions simultaneously
<?php //set timezone to UTC to disregard daylight savings ini_set('date.timezone', 'America/New_York'); $date1 = new \DateTime('2006-01-01T12:00:00'); $date2 = new \DateTime('2006-06-01T12:00:00'); $interval = new \DateInterval('PT1H'); $periods = new \DatePeriod($date1, $interval, $date2); $hours = iterator_count($periods); echo $hours . ' hours';
Output for 5.6.38 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
3623 hours
preferences:
78.47 ms | 408 KiB | 5 Q