gupnp_service_proxy_add_notify
  Sets up callback for variable change notification
  
 
  Description
  
   bool gupnp_service_proxy_add_notify
    ( resource $proxy
   , string $value
   , int $type
   , mixed $callback
   [, mixed $arg
  ] )
  
  
 
  Parameters
  
   
    - 
     
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 the arg is third.
      
      
    
    - 
     
arg
      - 
      
       User data for callback. 
      
      
    
   
  
  
 
  Return Values
  
   Returns TRUE on success or FALSE on failure.
  
  
 
  See Also
  
   
    - gupnp_service_proxy_remove_notify