获取两个日期的天数

<? 
function daysbetweendates($date1, $date2){
   /*  $date1 = strtotime($date1);
    $date2 = strtotime($date2); */
    $days = ceil(abs($date1 - $date2)/86400);
    return $days;
}
echo daysbetweendates(time(),629308800);
?>