霜天部落 | 关注LAMP高性能、高并发架构的设计与研究

php统计页面执行时间

定义了一个计时器类:

<?
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;
?>

下边是例子
<?
$timer = new timer;
$timer->start();
/*
*你的代码放在此处
*/
$timer->stop();
echo "执行本页面共".$timer->spent();
?>