$datetime1 = new DateTime('2020-10-11 16:52:52'); $datetime2 = new DateTime('2020-10-13 16:52:52'); $interval = $datetime1->diff($datetime2); echo $interval->format('%a days');
$now = time(); // or your date as well $your_date = strtotime("2010-01-31"); $datediff = $now - $your_date; echo round($datediff / (60 * 60 * 24));