以后可能会扩充些实用的功能
用法:
<?phpinclude 'stopwatch.php';$timer = new Stopwatch();$timer->start();//这里是要统计执行时间的代码$timer->stop();echo $timer->getTime();?>
<?php/* * @author badboy * @2009-06-02 * class Stopwatch * 此类可用于计算程序运行时间 * 以此观察效率 */class Stopwatch{ var $previousTime; var $timeCost; //所用时间 //constructor function Stopwatch() { $this->timeCost=0; } function getCurrentTime() { list($usec, $sec) = explode(' ', microtime()); return ((float)$usec + (float)$sec); } //start function start() { $this->timeCost = 0; $this->previousTime=$this->getCurrentTime(); } //stop function stop() { $this->timeCost = $this->getCurrentTime() - $this->previousTime; } //get time function getTime() { return $this->timeCost; }}?>
