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/**
* ¼ÆËã´úÂëÖ´ÐÐʱ¼ä
* $counting : µ±Ç°µÄ¼Æʱ״̬
* $startTime £º ¿ªÊ¼¼ÆʱµÄʱ¼ä
* $totalTime : ´úÂëÖ´ÐеÄÓÃʱ
* getTime() : È¡µÃµ±Ç°Ê±¼ä£¨ÒÔ΢ÃëΪµ¥Î»£©
* start() : ¿ªÊ¼¼Æʱ
* show() : ÏÔʾִÐдúÂëµÄÓÃʱ
*
*/
class Counter
{
private $counting;
private $startTime;
private $totalTime;

function __construct(){
$this->start();
}

private function getTime(){
list($msec,$sec) = explode(' ',microtime());
return $sec+$msec;
}

function start(){
$this->counting = TRUE;
$this->startTime = $this->getTime();
}

function stop(){
$this->counting = FALSE;
$this->totalTime = ($this->getTime() - $this->startTime)*1000000;
}

function show(){
$this->counting == TRUE && $this->stop();
echo "<br>ºÄʱ£º".$this->totalTime." ΢Ãë<br>";
$this->start();
}
}
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class Myobj
{
function myf($str){
preg_match('/456/',$str);
}
}
$obj = new Myobj();
$str = '123456789';
$counter = new Counter();
for($i=0;$i<10000;$i++){
$obj->myf($str);
}
$counter->show();
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$str = '123456789';
$counter = new Counter();
for($i=0;$i<10000;$i++){
preg_match('/456/',$str);
}
$counter->show();
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