gupnp_service_proxy_add_notify
(PECL gupnp >= 0.1.0)
gupnp_service_proxy_add_notify — Sets up callback for variable change notification
说明
gupnp_service_proxy_add_notify
( resource
$proxy
, string $value
, int $type
, mixed $callback
[, mixed $arg
] ) : boolSets up callback to be called whenever a change notification for variable is recieved.
参数
-
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 - Type of the variable is boolean.
-
GUPNP_TYPE_INT - Type of the variable is integer.
-
GUPNP_TYPE_LONG - Type of the variable is long.
-
GUPNP_TYPE_DOUBLE - Type of the variable is double.
-
GUPNP_TYPE_FLOAT - Type of the variable is float.
-
GUPNP_TYPE_STRING - Type of the variable is string.
-
-
callback -
The callback to call when variable changes. Typically, callback function takes on three parameters. The
variableparameter being the first,valueparameter being the second, and theargis third. -
arg -
User data for
callback.
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE。