var variables:URLVariables = new URLVariables();

var request:URLRequest = new URLRequest();

request.url = "http://test1.ru/script/login.php";

variables['name']='zzz';

//variables['password']='zzz';

request.method = URLRequestMethod.POST;

request.data = variables;

var loader:URLLoader = new URLLoader();

loader.dataFormat = URLLoaderDataFormat.VARIABLES;

loader.addEventListener(Event.COMPLETE, completeHandler2);

try{

loader.load(request);

}

catch(error:Error){

 trace("Unable to load URL");

 }

function completeHandler2(event:Event):void{

trace(event.target.data);

}