&符 php中引用分析（代码实例）

&符 php中引用

public function __construct(){
		$this->log('initialize paiguan interface');


		$this->ci = &get_instance();
		$this->input = &$this->ci->input;
		$this->load = &$this->ci->load;
		$this->ci->load->library('socketclient');
		$this->ci->load->library('xml');
		$this->socket = &$this->ci->socketclient;
		$this->xml = &$this->ci->xml;
		$this->log('initialize middb');
		$this->middb = $this->ci->load->database('middb',true);
		if(!$this->middb){
			$this->error('load middb database error');
		}
	}

&的作用为传引用