code: public function redirect(string $sUrl, int $iHttpCode = 301)
      {
          if ($iHttpCode === 301) { header('Status: 301 Moved Permanently', false, 301); }
          else if ($iHttpCode === 302) { header('Status: Moved Temporarily', false, 301); }
  
          header('Location: '.$sUrl);
          exit;
      }
docs: redirection HTTP
  
  @access public
  @param  string $sUrl url for the redirection
  @param int $iHttpCode code of the http request
  @return void