我有两个约会，
$expiry_time = strtotime('comming from database');
$current_date = strtotime(date('Y-m-d H:i:s'));
$time_diff = ($expiry_time-$current_date)/(3600);
这里，$time_diff会给我小时差值。如。5.67. 但是，我想要小时，分和秒的格式。我怎样才能做到这一点呢?谢谢。
使用DateTime()和DateInterval()
$expiry_time = new DateTime($row['fromdb']);
$current_date = new DateTime();
$diff = $expiry_time->diff($current_date);
echo $diff->format('%H:%I:%S'); // returns difference in hr min and sec
你应该使用DateTime类，但如果你使用的PHP版本低于5.2你可以这样做:
function convert_time_by_seconds($interval) {
if($interval < 0) {
return false;
}
$seconds_n_miliseconds = explode('.', $interval);
$interval = $seconds_n_miliseconds[0];
$hours = floor($interval / (60*60));
$minutes = floor(($interval - ($hours*60*60)) / 60);
$seconds = floor(($interval - ($hours*60*60)) - ($minutes*60));
$ms = empty($seconds_n_miliseconds[1]) ? 0 : $seconds_n_miliseconds[1];
return array('h' => $hours, 'm' => $minutes, 's' => $seconds, 'ms' => $ms);
}
$time_diff = time() - strtotime('2014-07-17 14:23:51');
$result = convert_time_by_seconds($time_diff);
var_dump($result);
http://php.net/manual/fr/function.date-diff.php有一堆有用的东西来做这个操作
使用date()函数
$time_diff = $expiry_time - $current_date;
echo date('H:i:s', $time_diff);