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<?php $begin = new DateTime('2020-05-28 13:00'); $end = new DateTime('2020-05-28 15:30'); $timeRanges = []; while($begin < $end) { $output = $begin->format('H:i') . " - "; $begin->modify('+15 minutes'); /** Note, it modifies time by 15 minutes */ $output .= $begin->format('H:i'); $timeRanges[] = $output; } print_r($timeRanges);
Output for 7.2.0 - 7.2.34, 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
Array ( [0] => 13:00 - 13:15 [1] => 13:15 - 13:30 [2] => 13:30 - 13:45 [3] => 13:45 - 14:00 [4] => 14:00 - 14:15 [5] => 14:15 - 14:30 [6] => 14:30 - 14:45 [7] => 14:45 - 15:00 [8] => 15:00 - 15:15 [9] => 15:15 - 15:30 )

preferences:
122.47 ms | 408 KiB | 5 Q