3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $dailyHours = 7.5; $baseDate = new DateTime('2017-01-01', new DateTimezone('UTC')); $endDate = clone $baseDate; for($i = 1; $i <= 30; ++$i) { $m = $i*15; $duration = new DateInterval("PT{$m}M"); $endDate->add($duration); } $totalDuration = $baseDate->diff($endDate); echo $totalDuration->format('%a days, %h hours, %i minutes'); $totalHours = $totalDuration->format('%a') * 7.5 + $totalDuration->format('%h'); $totalMinutes = $totalDuration->format('%i');
based on LMknP
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
4 days, 20 hours, 15 minutes