PHP计算页面执行时间_[PHP教程] 以下类定义了一个计时器,将你的执行脚本加入到"容器"内即可(请看注释)

class timer{ var StartTime = 0;var StopTime = 0;var TimeSpent = 0;function start(){this->StartTime = microtime();} function stop(){ this->StopTime　= microtime();} function spent(){   if (this->TimeSpent) {   return this->TimeSpent;     } else {StartMicro = substr(this->StartTime,0,10);StartSecond = substr(this->StartTime,11,10);StopMicro　 = substr(this->StopTime,0,10);StopSecond　= substr(this->StopTime,11,10);start = doubleval(StartMicro) + StartSecond;stop　= doubleval(StopMicro) + StopSecond;this->TimeSpent = stop - start;return substr(this->TimeSpent,0,8)."秒";        }     }// end function spent();}//end class timer;//例子  timer = new timer;    timer->start();/*你的代码放在此处*/timer->stop();echo "执行本SCRIPT共".timer->spent();?>