public function connect() {

		if(false === $this -> connection instanceof \mysqli) {
			
			$this -> connection = new \mysqli($this -> data -> host, $this -> data -> username, $this -> data -> password, $this -> data -> db, $this -> data -> port);
			
			if($this -> data -> charset) {
	            $this -> connection -> set_charset($this -> data -> charset);
	        }
		}
	}