function savePerson( $person_id )
{
  $query = 'SELECT * FROM `person` WHERE person_id = '.$person_id.' LIMIT 1;';
  if( !$person = $this->db->get( $query )
  {
    return false;
  }

  $query = 'SELECT * FROM `person_'.$person['person_type'].' WHERE person_id = '.$person_id.' LIMIT 1;';
  $person['data'] = $this->db->get( $query );

  $this->saveFile( 'person_'.$person_id, $person );

  return array
  (
     'person' => $person,
     'time' => time()
  );
}