GEANT / CAT

     * @param int $userId

     * @return array of invitationObjects

     */

    public function userStatus($userId) {

        $retval = [];

        $userrows = $this->databaseHandle->exec("SELECT `token` FROM `silverbullet_invitation` WHERE `silverbullet_user_id` = ? AND `profile_id` = ? ", "ii", $userId, $this->identifier);

        // SELECT -> resource, not boolean

        while ($returnedData = mysqli_fetch_object(/** @scrutinizer ignore-type */ $userrows)) {

            $retval[] = new SilverbulletInvitation($returnedData->token);

        }

        return $retval;

    }

    /**

     * finds out the expiry date of a given user

     * lists all users of this SB profile

     * @return array

     */

    public function listAllUsers() {

        $userArray = [];

        $users = $this->databaseHandle->exec("SELECT `id`, `username` FROM `silverbullet_user` WHERE `profile_id` = ? ", "i", $this->identifier);

        // SELECT -> resource, not boolean

        while ($res = mysqli_fetch_object(/** @scrutinizer ignore-type */ $users)) {

            $userArray[$res->id] = $res->username;

        }

        return $userArray;

    }

    /**

     * lists all users which are currently active (i.e. have pending invitations and/or valid certs)