<function name="rpcf_get_groups_for_user" id="0x2550">
      <input>
        <integer name="user_id" />
      </input>
      <output>
          <integer name="groups_size" />
       	  <for name="i" from="0" count="groups_size">
	    <integer name="group_id" array_index="i" />
	    <string name="group_name" array_index="i" />
	  </for>
      </output>
    </function>

	function rpcf_get_groups_for_user($user_id) { //0x2550
		$ret=array();
		if (!$this->connection->urfa_call(0x2550)) {
			print "Error calling function ". __FUNCTION__ ."\n";
			return FALSE;
		}
		$packet = $this->connection->getPacket();
		$packet->DataSetInt($user_id);
		$this->connection->urfa_send_param($packet);
		$x = $this->connection->urfa_get_data();
		$count=$x->DataGetInt();
		$ret['count']=$count;
		for ($i=0;$i<$count;$i++) {
			$group['group_id']=$x->DataGetInt();
			$group['group_name']=$x->DataGetString();
			$ret['group'][]=$group;
		}
//		$this->connection->urfa_get_data();
		return $ret;
	}