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
] ) :
bool
Sets 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
variable
parameter being the first,value
parameter being the second, and thearg
is third. -
arg
-
User data for
callback
.
返回值
成功时返回 TRUE
, 或者在失败时返回 FALSE
。