XML

 <function name="rpcf_add_group" id="0x2401">
    <input>
      <integer name="group_id" />
      <string name="group_name" />
    </input>
    <output/>
  </function>

PHP

   function rpcf_add_group($group_id, $group_name) { //0x2401, 0x2402
      $ret=array();
      if (!$this->connection->urfa_call(0x2401)) {
         print "Error calling function ". __FUNCTION__ ."\n";
         return FALSE;
      }
      $packet = $this->connection->getPacket();
      $packet->DataSetInt($group_id);
      $packet->DataSetString($group_name);
      $this->connection->urfa_send_param($packet);
      $this->connection->urfa_get_data();
 
      return;
   }