public function connect() {
		if ($this->isConnected) return;
		$user = $this->connectInfo['user'];
		$pass = $this->connectInfo['pass'];
		//PDO::MYSQL_ATTR_INIT_COMMAND
		$this->pdo = new PDO(
				  $this->dsn,
				  $user,
				  $pass,
				  array(1002 => 'SET NAMES utf8',
							 PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
							 PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,

				  )
		);
		$this->pdo->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, true);
		$this->isConnected = true;
	}