public function getFriendStats($u_fbid, $f_fbid) {
    $this->sql = sprintf("SELECT * FROM P_GET_FRIEND_STATS(%d, %d)",
                          $u_fbid, $f_fbid);
    $this->query($this->dbConn);

    return @pg_fetch_array($this->result, NULL, PGSQL_ASSOC);
  }