<?php

//PHP计算两个时间差的方法

$startdate="2017-12-3 12:00:00";

$enddate="2017-12-4 12:00:00";

$date=floor((strtotime($enddate)-strtotime($startdate))/86400);

$hour=floor((strtotime($enddate)-strtotime($startdate))%86400/3600);

$minute=floor((strtotime($enddate)-strtotime($startdate))%86400/60);

$second=floor((strtotime($enddate)-strtotime($startdate))%86400%60);

echo $date."天";

echo $hour."小时";

echo $minute."分钟";

echo $second."秒;

?>