if (!$currentArticle->checkVariables()) {
            handle(ERROR_INPUT . '01');
        }
        $response = $currentArticle->create();
        if ($response === false) {
            handle(ERROR_SYSTEM . '00');
        }
        handle('0000{"aid":' . $response . '}');
        break;
    case 'renew':
        if (!checkAuthority(9)) {
            handle(ERROR_SYSTEM . '00');
        }
        $currentArticle = new Article();
        $currentArticle->aid = getRequest('aid');
        $response = json_decode($currentArticle->getData(), true);
        $currentArticle->init(getRequest('title'), getRequest('content'), (int) getRequest('visibility'), (int) getRequest('notice'));
        if (!$currentArticle->checkVariables()) {
            handle(ERROR_INPUT . '01');
        }
        $response = $currentArticle->modify();
        if ($response === false) {
            handle(ERROR_SYSTEM . '00');
        } else {
            handle('0000');
        }
        break;
    default:
        ERROR(ERROR_INPUT . '02', 'Request Error.');
        break;
}