(PECL gupnp >= 0.1.0)
gupnp_root_device_set_available — Set whether or not root_device is available
$root_device
, bool $available
) : boolControls whether or not root_device is available (announcing its presence).
root_deviceA root device identifier, returned by gupnp_root_device_new().
available
Set TRUE if root_device should be available.
成功时返回 TRUE， 或者在失败时返回 FALSE。