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1 //mktime = mktime($hours,minute,seconds,month,day,years)
2
3 $start_time = mktime(0,0,0,01,09,2010); //开始时间
4 $end_time = mktime(0,0,0,02,09,2010); //结束时间
5 $times = $end_time-$start_time; //开始与结束之间相差多少秒
6 $now_time = $times/(24*3600); //得出一共有多少
mktime得到的是秒为单位哦