倒计时

//1获取24小时

$fixation_time =strtotime("+1 day")-time();

//2.获取已经过去的时间

$different = time()-strtotime($question->created_at);

//3.获取时间差

$time = $fixation_time - $different;

//4.获取时

$hour = floor($time/3600);

if($hour<10)

{

$hour = '0'.$hour;

}

//5.获取分

$minute = floor($time/60) - ($hour*60);

if($minute<10)

{

$minute = '0'.$minute;

}

//6.获取秒

$second= $time - floor($hour*3600+$minute*60);

if($second<10)

{

$second = '0'.$second;

}

$count_down = $hour.':'.$minute.':'.$second;