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获得页面执行时间

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Release: 2016-06-07 11:43:48
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获得页面执行时间
<?php <br /> header("Content-type:text/html;charset=utf-8");<br> class runtime<br> {<br>     private $begintime = 0;<br>     private $endtime   = 0;<br>     private function gettime()<br>     {<br>         list($usec,$sec) = explode(" ", microtime());<br>         return ((float)$usec + (float)$sec);<br>     }<br>     public function begin()<br>     {<br>         $this->begintime = $this->gettime();<br>     }<br>     public function end()<br>     {    <br>         $this->endtime = $this->gettime();<br>     }<br>     public function spent()<br>     {<br>         return round(($this->endtime - $this->begintime) * 1000, 1);<br>     }<br> }<br> $runtime = new runtime();<br> $runtime->begin();<br> for ($i=0; $i      echo $i;<br> }<br> $runtime->end();<br> echo '页面执行时间'.$runtime->spent().'毫秒';<br> ?> 

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