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<?php $period_durations = [ 'every_2_hours' => 2, 'every_4_hours' => 4, 'every_8_hours' => 8, ]; $period = 'every_8_hours'; $hour = (int) date('G'); $duration = $period_durations[$period]; $hour = ((int)($hour/$duration)+1)*$duration; // drop remainder $dateTime = new DateTime(); $dateTime->setTime($hour, 0, 0); print_r($dateTime);
Output for git.master, git.master_jit, rfc.property-hooks
DateTime Object ( [date] => 2015-05-14 00:00:00.000000 [timezone_type] => 3 [timezone] => Europe/Amsterdam )

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