code: function ServerHostname() {
          if ($this->Hostname != "")
              $result = $this->Hostname;
          elseif ($this->ServerVar('SERVER_NAME') != "")
              $result = $this->ServerVar('SERVER_NAME');
          else
              $result = "localhost.localdomain";
  
          return $result;
      }
docs: Returns the server hostname or 'localhost.localdomain' if unknown.
  @access private
  @return string