shell http://blog.csdn.net/gengshenghong/article/details/7583580
php https://zhidao.baidu.com/question/1179524064239748859.html
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<?php
class runtime
{
var $StartTime = 0;
var $StopTime = 0;
function get_microtime()
{
list($usec, $sec) = explode(' ', microtime());
return ((float)$usec + (float)$sec);
}
function start()
{
$this->StartTime = $this->get_microtime();
}
function stop()
{
$this->StopTime = $this->get_microtime();
}
function spent()
{
return round(($this->StopTime - $this->StartTime) * 1000, 1);
}
}
//例子
$runtime= new runtime;
$runtime->start();
//你的代码开始
$a = 0;
for($i=0; $i<1000000; $i++)
{
$a += $i;
}
//你的代码结束
$runtime->stop();
echo "页面执行时间: ".$runtime->spent()." 毫秒";
?>
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