考慮到int 型有范圍,超過(guò)范圍后,再自增就會(huì)產(chǎn)生負(fù)數(shù)
在銷(xiāo)毀時(shí)候,id自減是否比較合理?雖然id似乎沒(méi)啥用.....
public function __destruct()
{
self::$statistics['connection_count']--;
//底下這行是我自己加的,經(jīng)測(cè)試,運(yùn)行正常
$this->id = $this->_id = self::$_idRecorder--;
}