Flash get PHP vars

package
{
    import flash.display.Sprite;
    import flash.events.*;
    import flash.net.URLLoader;
    import flash.net.URLLoaderDataFormat;
    import flash.net.URLRequest;
 
    public class URLLoaderDataFormatExample extends Sprite
    {
        public function URLLoaderDataFormatExample()
        {
            var request:URLRequest = new URLRequest("http://www.[yourdomain].com/params.txt");
            var variables:URLLoader = new URLLoader();
            variables.dataFormat = URLLoaderDataFormat.VARIABLES;
            variables.addEventListener(Event.COMPLETE, completeHandler);
            try
            {
                variables.load(request);
            } 
            catch (error:Error)
            {
                trace("Unable to load URL: " + error);
            }
        }
        private function completeHandler(event:Event):void
        {
            var loader:URLLoader = URLLoader(event.target);
            trace(loader.data.varName);
        }
    }
}