过滤

/**
	 * html过滤
	 * @param array|object $_date
	 * @return string
	 */
	  function htmlString($_date) {
		if (is_array($_date)) {
			foreach ($_date as $_key=>$_value) {
				$_string[$_key] = Tool::htmlString($_value);  //递归
			}
		} elseif (is_object($_date)) {
			foreach ($_date as $_key=>$_value) {
				$_string->$_key = Tool::htmlString($_value);  //递归
			}
		} else {
			$_string = htmlspecialchars($_date);
		}
		return $_string;
	}

	/**
	 * 数据库输入过滤
	 * @param string $_data
	 * @return string
	 */
  function mysqlString($_data) {
		$_data = trim($_data);
		return !GPC ? addcslashes($_data) : $_data;
	}