public function getUserData($sKey = null)
    {
        $this->setup();
        if (empty($this->oSession)) {
            return null;
        }
        return $this->oSession->userdata($sKey);
    }
public function getUserData($sKey = null)
    {
        $this->setup();
        if (empty($this->oSession)) {
            return null;
        }
        return $this->oSession->userdata($sKey);
    }
public function getUserData ( $ sKey = null ) { $ this -> setup ( ) ; if ( empty ( $ this -> oSession ) ) { return null ; } return $ this -> oSession -> userdata ( $ sKey ) ; }
Retrieves data from the session

@param string $sKey The key to retrieve

@return mixed
Retrieves data from the session