public function logout() {

        set_user_preference('repository_flickr_access_token', null);
        set_user_preference('repository_flickr_access_token_secret', null);

        $this->accesstoken = null;
        $this->accesstokensecret = null;

        return $this->print_login();
    }
public function logout() {

        set_user_preference('repository_flickr_access_token', null);
        set_user_preference('repository_flickr_access_token_secret', null);

        $this->accesstoken = null;
        $this->accesstokensecret = null;

        return $this->print_login();
    }
public function logout ( ) { set_user_preference ( 'repository_flickr_access_token' , null ) ; set_user_preference ( 'repository_flickr_access_token_secret' , null ) ; $ this -> accesstoken = null ; $ this -> accesstokensecret = null ; return $ this -> print_login ( ) ; }
Purge the stored access token and related user data.

@return string
Purge the stored access token and related user data .