public function get($key){
		if( !@$this->langDb[$key] ){
			return '---';
		}
		$lang = $this->lang;
		if( !strlen($this->langDb[$key][$lang]) ){
			$lang = $this->defaultLang;
		}
		if( !strlen($this->langDb[$key][$lang]) ){
			return '---';
		}
		$rtn = $this->langDb[$key][$lang];
		$data = (@$this->options['bind'] ? $this->options['bind'] : array());
		$data['_ENV'] = $this;

		// PHP版は、ejs ではなく twig に対応
		$loader = new \Twig_Loader_Array(array(
			'index' => $rtn,
		));
		$twig = new \Twig_Environment($loader);
		$rtn = $twig->render('index', $data);
		return $rtn;
	}