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(PECL gupnp >= 0.1.0)
gupnp_service_proxy_add_notify — Sets up callback for variable change notification
$proxy
, string $value
, int $type
, mixed $callback
[, mixed $arg
] )Sets up callback to be called whenever a change notification for variable is recieved.
proxy A service proxy identifier.
value The variable to add notification for.
type The type of the variable. Type can be one of the following values:
GUPNP_TYPE_BOOLEAN GUPNP_TYPE_INT GUPNP_TYPE_LONG GUPNP_TYPE_DOUBLE GUPNP_TYPE_FLOAT GUPNP_TYPE_STRING callback
The callback to call when variable changes. Typically, callback function
takes on three parameters. The variable
parameter being the first, value parameter
being the second, and the arg is third.
arg
User data for callback.
成功时返回 TRUE , 或者在失败时返回 FALSE 。