$group->owner = $group->users[0];
            }
        }
        $deleted = User::deleteUserByMtrklNr($args['id']);
        echo json_encode($deleted);
    } else {
        echo json_encode(false);
    }
});
$app->get('/users/{id}/groups', function ($request, $response, $args) {
    $server_params = $request->getServerParams();
    if (preg_match("/Basic\\s+(.*)\$/i", $server_params["REDIRECT_HTTP_AUTHORIZATION"], $matches)) {
        list($user, $password) = explode(":", base64_decode($matches[1]));
    }
    if ($args['id'] == $user) {
        $groups = User::getAllGroupsOfUser($args['id']);
        echo json_encode($groups);
    } else {
        echo json_encode(false);
    }
});
$app->get('/users/{id}/meetings', function ($request, $response, $args) {
    $server_params = $request->getServerParams();
    if (preg_match("/Basic\\s+(.*)\$/i", $server_params["REDIRECT_HTTP_AUTHORIZATION"], $matches)) {
        list($user, $password) = explode(":", base64_decode($matches[1]));
    }
    if ($args['id'] == $user) {
        $meetings = User::getAllMeetingsOfUser($args['id']);
        echo json_encode($meetings);
    } else {
        echo json_encode(false);