(PECL gupnp >= 0.1.0)
gupnp_service_proxy_set_subscribed — (Un)subscribes to the service
$proxy
, bool $subscribed
)(Un)subscribes to the service.
proxyA service proxy identifier.
subscribed
Set TRUE to subscribe to this service.
成功时返回 TRUE， 或者在失败时返回 FALSE。