PMA\libraries\Util::getDocuLink PHP Method

    public static function getDocuLink($page, $anchor = '')
    {
        /* Construct base URL */
        $url = $page . '.html';
        if (!empty($anchor)) {
            $url .= '#' . $anchor;
        }
        /* Check if we have built local documentation */
        if (defined('TESTSUITE')) {
            /* Provide consistent URL for testsuite */
            return PMA_linkURL('https://docs.phpmyadmin.net/en/latest/' . $url);
        } elseif (@file_exists('doc/html/index.html')) {
            if (defined('PMA_SETUP')) {
                return '../doc/html/' . $url;
            } else {
                return './doc/html/' . $url;
            }
        } else {
            /* TODO: Should link to correct branch for released versions */
            return PMA_linkURL('https://docs.phpmyadmin.net/en/latest/' . $url);
        }
    }

 /**
  * Creates the code for displaying the links
  * at the top of the navigation panel
  *
  * @return string HTML code for the links
  */
 private function _links()
 {
     // always iconic
     $showIcon = true;
     $showText = false;
     $retval = '<!-- LINKS START -->';
     $retval .= '<div id="navipanellinks">';
     $retval .= PMA\libraries\Util::getNavigationLink('index.php' . URL::getCommon(), $showText, __('Home'), $showIcon, 'b_home.png');
     // if we have chosen server
     if ($GLOBALS['server'] != 0) {
         // Logout for advanced authentication
         if ($GLOBALS['cfg']['Server']['auth_type'] != 'config') {
             $text = __('Log out');
         } else {
             $text = __('Empty session data');
         }
         $link = 'logout.php' . $GLOBALS['url_query'];
         $retval .= PMA\libraries\Util::getNavigationLink($link, $showText, $text, $showIcon, 's_loggoff.png', '', true, '', array('logout'));
     }
     $retval .= PMA\libraries\Util::getNavigationLink(PMA\libraries\Util::getDocuLink('index'), $showText, __('phpMyAdmin documentation'), $showIcon, 'b_docs.png', '', false, 'documentation');
     $retval .= PMA\libraries\Util::getNavigationLink(PMA\libraries\Util::getMySQLDocuURL('', ''), $showText, __('Documentation'), $showIcon, 'b_sqlhelp.png', '', false, 'mysql_doc');
     $retval .= PMA\libraries\Util::getNavigationLink('#', $showText, __('Navigation panel settings'), $showIcon, 's_cog.png', 'pma_navigation_settings_icon', false, '', defined('PMA_DISABLE_NAVI_SETTINGS') ? array('hide') : array());
     $retval .= PMA\libraries\Util::getNavigationLink('#', $showText, __('Reload navigation panel'), $showIcon, 's_reload.png', 'pma_navigation_reload');
     $retval .= '</div>';
     $retval .= '<!-- LINKS ENDS -->';
     return $retval;
 }