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<?php $date1 = '2014-07-19 13:00'; $date2 = '2014-07-20 13:00'; $date_range = range(strtotime($date1), strtotime($date2), 3600); foreach ($date_range as $k=>$a) $date_range[$k] = date('Y-m-d H:i:s', $a); print_r($date_range);

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42.16 ms | 402 KiB | 5 Q