獲取兩個時期之間相差天數

<?php
class Dtime
{
    //獲取兩個日期相差天數 1
    function get_days($date1, $date2)
    {
        $time1 = strtotime($date1);
        $time2 = strtotime($date2);
        return ($time2-$time1)/86400;
    }
    //獲取兩個日期相差天數(時間格式爲Y-n-d)
    function get_days2($date1, $date2){


        $temp = explode('-', $date1);
        $time1 = mktime(0, 0, 0, $temp[1], $temp[2], $temp[0]);
        $temp = explode('-', $date2);
        $time2 = mktime(0, 0, 0, $temp[1], $temp[2], $temp[0]);
        return ($time2-$time1)/86400;
    }
}


$Dtime = new Dtime;
echo $Dtime->get_days('2016-2-5', '2016-3-7');
echo '</br>';
echo $Dtime->get_days2('2016-2-5', '2016-3-7');


?>