PHP：以秒为单位的时差

Question

我想从给定时间得到总秒数，例如下面给出的数据：

$timein=04-01-2017 7:56:37 am;
$timeout=04-01-2017 5:15:17 pm;
$totalseconds= ?

Answer 1

PHP code demo

<?php
$time1=strtotime("04-01-2017 7:56:37 am");
$time2=strtotime("04-01-2017 5:15:17 pm");
echo $time2-$time1;