PHP 计算页面执行时间的方法
< ?php<br />class runtime<br />{ <br /> var $StartTime = 0; <br /> var $StopTime = 0; <br /> <br /> function get_microtime() <br /> { <br /> list($usec, $sec) = explode(' ', microtime()); <br /> return ((float)$usec + (float)$sec); <br /> } <br /> <br /> function start() <br /> { <br /> $this->StartTime = $this->get_microtime(); <br /> } <br /> <br /> function stop() <br /> { <br /> $this->StopTime = $this->get_microtime(); <br /> } <br /> <br /> function spent() <br /> { <br /> return round(($this->StopTime - $this->StartTime) * 1000, 1); <br /> } <br /> <br />}<?php</p><p>$runtime= new runtime;<br />$runtime->start();<br /> <br />//你的代码开始<br /> <br />$a = 0;<br />for($i=0; $i<1000000; $i++)<br />{<br /> $a += $i;<br />}<br /> <br />//你的代码结束<br /> <br />$runtime->stop();<br />echo "页面执行时间: ".$runtime->spent()." 毫秒";<br /> <br />?>
