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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
。