PMA\libraries\Message::error PHP Method

    public static function error($string = '')
    {
        if (empty($string)) {
            $string = __('Error');
        }
        return new Message($string, Message::ERROR);
    }

/**
 * This function is called from one of the other functions in this file
 * and it completes the handling of the export functionality.
 *
 * @param string $export_data The SQL query to create the requested item
 *
 * @return void
 */
function PMA_RTE_handleExport($export_data)
{
    global $db;
    $item_name = htmlspecialchars(PMA\libraries\Util::backquote($_GET['item_name']));
    if ($export_data !== false) {
        $export_data = htmlspecialchars(trim($export_data));
        $title = sprintf(PMA_RTE_getWord('export'), $item_name);
        if ($GLOBALS['is_ajax_request'] == true) {
            $response = PMA\libraries\Response::getInstance();
            $response->addJSON('message', $export_data);
            $response->addJSON('title', $title);
            exit;
        } else {
            $export_data = '<textarea cols="40" rows="15" style="width: 100%;">' . $export_data . '</textarea>';
            echo "<fieldset>\n" . "<legend>{$title}</legend>\n" . $export_data . "</fieldset>\n";
        }
    } else {
        $_db = htmlspecialchars(PMA\libraries\Util::backquote($db));
        $message = __('Error in processing request:') . ' ' . sprintf(PMA_RTE_getWord('not_found'), $item_name, $_db);
        $response = Message::error($message);
        if ($GLOBALS['is_ajax_request'] == true) {
            $response = PMA\libraries\Response::getInstance();
            $response->setRequestStatus(false);
            $response->addJSON('message', $message);
            exit;
        } else {
            $response->display();
        }
    }
}