/* /flashservices/services/Catalog.php */
class Catalog {
        var $products_array = array();

// Constructor: Contains the list of methods available to the gateway
function Catalog() {
        $this->methodTable = array (
                "getProducts" => array (
                        "description" => "Get list of products",
                        "access" => "remote",
                        "arguments" => "" // arguments could be optional, not tested
                )
        ); // end methodTable
}

function getProducts() {       
        // your code goes here

        return $this->products_array;
}
}

#include "NetServices.as"
NetServices.setDefaultGatewayUrl("http://yourserver.com/flashservices/gateway.php");
gw = NetServices.createGatewayConnection();
CatalogREMOTE = gw.getService("Catalog", this);
CatalogREMOTE.getProducts();

getProducts_Result = function(result) {
        _root.products_results = result;
}