(PECL gupnp >= 0.1.0)
gupnp_service_notify — Notifies listening clients
Notifies listening clients that the property have changed to the specified values.
service
     A service identifier.
name
     The name of the variable.
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
         value
     The value of the variable.
   Returns TRUE on success or FALSE on failure.
  
Issues E_WARNING with either not correctly defined type of the variable or the value is not corresponding to the defined type.