php 计算时间差的方法（原创）包括..

1. function timediff($begin_time,$end_time)  
2. {  
3.      if($begin_time < $end_time){  
4.         $starttime = $begin_time;  
5.         $endtime = $end_time;  
6.      }  
7.      else{  
8.         $starttime = $end_time;  
9.         $endtime = $begin_time;  
10.      }  
11.      $timediff = $endtime-$starttime;  
12.      $days = intval($timediff/86400);  
13.      $remain = $timediff%86400;  
14.      $hours = intval($remain/3600);  
15.      $remain = $remain%3600;  
16.      $mins = intval($remain/60);  
17.      $secs = $remain%60;  
18.      $res = array("day" => $days,"hour" => $hours,"min" => $mins,"sec" => $secs);  
19.      return $res;  
20. } 

function timediff($begin_time,$end_time)
{
     if($begin_time < $end_time){
        $starttime = $begin_time;
        $endtime = $end_time;
     }
     else{
        $starttime = $end_time;
        $endtime = $begin_time;
     }
     $timediff = $endtime-$starttime;
     $days = intval($timediff/86400);
     $remain = $timediff%86400;
     $hours = intval($remain/3600);
     $remain = $remain%3600;
     $mins = intval($remain/60);
     $secs = $remain%60;
     $res = array("day" => $days,"hour" => $hours,"min" => $mins,"sec" => $secs);
     return $res;
}