code: protected static function hostname()
      {
          return function(Binder $binder)
          {
              if (DIRECTORY_SEPARATOR === '\\') {
                  $fq = php_uname('n');
                  if (isset($_SERVER['USERDNSDOMAIN'])) {
                      $fq .= '.' . $_SERVER['USERDNSDOMAIN'];
                  }
              } else {
                  $fq = exec('hostname -f');
              }
  
              $binder->bindConstant('stubbles.hostname.nq')
                     ->to(php_uname('n'));
              $binder->bindConstant('stubbles.hostname.fq')
                     ->to($fq);
          };
      }
docs: create a binding module which binds current hostnames
  
  @api
  @return  \Closure