我有这个代码:$time_sample[]=microtime(true);//startsleep(1);$time_sample[]=microtime(true);//time1sleep(2);$time_sample[]=microtime(true);//time2sleep(3);$time_sample[]=microtime(true);//time3sleep(4);$time_sample[]=microtime(true);//time4脚本输出:Time1:1.001217seconds.Time2:2.002094seconds.Time3:3.003023