PHP如何计算两个时间之间相差多少时分秒？

关于PHP如何计算两个时间之前的差值，见代码：

 1 /**
 2  * 计算时间差
 3  * @param int $timestamp1 时间戳开始
 4  * @param int $timestamp2 时间戳结束
 5  * @return array
 6  */
 7 function time_diff($timestamp1, $timestamp2)
 8 {
 9     if ($timestamp2 <= $timestamp1)
10     {
11         return ['hours'=>0, 'minutes'=>0, 'seconds'=>0];
12     }
13     $timediff = $timestamp2 - $timestamp1;
14     // 时
15     $remain = $timediff%86400;
16     $hours = intval($remain/3600);
17 
18     // 分
19     $remain = $timediff%3600;
20     $mins = intval($remain/60);
21     // 秒
22     $secs = $remain%60;
23 
24     $time = ['hours'=>$hours, 'minutes'=>$mins, 'seconds'=>$secs];
25 
26     return $time;
27 }

测试用例：

$time1 = 1478483626;

$time2 = 1478485126;

var_dump(time_diff($time1, $time2));

输出结果：

　　array(3) { ["hours"]=> int(0) ["minutes"]=> int(25) ["seconds"]=> int(0) }

什么天之类的类似方法，注意时分秒之间的倍数是60就好计算了。