import flash.net.URLRequest;
import flash.net.URLVariables;
import flash.net.URLLoader;
import flash.net.URLRequestMethod;

var request:URLRequest = new URLRequest("http://www.ulfben.com/toupper.php"); //a friendly server-side script
var variables:URLVariables = new URLVariables(); 
variables["test"] = "test test";
request.data = variables; //add the data to our containers
request.method = URLRequestMethod.GET;

var loader:URLLoader = new URLLoader();
loader.addEventListener(Event.COMPLETE, onComplete);
loader.load(request);

function onComplete(event:Event)
{
	var loader:URLLoader = URLLoader(event.target);
	var vars:URLVariables = new URLVariables(loader.data);
	for (var parameter:String in vars) { //iterate through whatever the server passed back.
		trace(parameter + " = " + vars[parameter]);
	}
}