PMA\libraries\plugins\auth\AuthenticationHttp::authForm PHP Method

    public function authForm()
    {
        if (empty($GLOBALS['cfg']['Server']['auth_http_realm'])) {
            if (empty($GLOBALS['cfg']['Server']['verbose'])) {
                $server_message = $GLOBALS['cfg']['Server']['host'];
            } else {
                $server_message = $GLOBALS['cfg']['Server']['verbose'];
            }
            $realm_message = 'phpMyAdmin ' . $server_message;
        } else {
            $realm_message = $GLOBALS['cfg']['Server']['auth_http_realm'];
        }
        $response = Response::getInstance();
        // remove non US-ASCII to respect RFC2616
        $realm_message = preg_replace('/[^\\x20-\\x7e]/i', '', $realm_message);
        $response->header('WWW-Authenticate: Basic realm="' . $realm_message . '"');
        $response->header('HTTP/1.0 401 Unauthorized');
        if (php_sapi_name() !== 'cgi-fcgi') {
            $response->header('status: 401 Unauthorized');
        }
        /* HTML header */
        $footer = $response->getFooter();
        $footer->setMinimal();
        $header = $response->getHeader();
        $header->setTitle(__('Access denied!'));
        $header->disableMenuAndConsole();
        $header->setBodyId('loginform');
        $response->addHTML('<h1>');
        $response->addHTML(sprintf(__('Welcome to %s'), ' phpMyAdmin'));
        $response->addHTML('</h1>');
        $response->addHTML('<h3>');
        $response->addHTML(Message::error(__('Wrong username/password. Access denied.')));
        $response->addHTML('</h3>');
        if (@file_exists(CUSTOM_FOOTER_FILE)) {
            include CUSTOM_FOOTER_FILE;
        }
        if (!defined('TESTSUITE')) {
            exit;
        } else {
            return false;
        }
    }