Online PHP editor | refs for opRWT

<?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 = $totalDuration->format('%i'); var_dump($totalHours, $totalMinutes);