(PECL gupnp >= 0.2.0)
gupnp_service_proxy_send_action — Send action with multiple parameters synchronously
$proxy
   , string $action
   , array $in_params
   , array $out_params
   )
  Send action with parameters in_params to the service exposed by proxy synchronously and return out_params with values or FALSE on error. 
  
proxyA service proxy identifier.
actionAn action.
in_params
       An array of in parameters. Each entry in in_params is supposed to an array containing name, type and value of the parameters. 
      
out_params
       An array of out parameters. Each entry in out_params is supposed to an array containing name and type of the parameters. 
      
   Return out_params array with values or FALSE on error.
  
   Issues E_WARNING with either not correctly defined in_params and out_params or unable to send action.