how to post data from actionscript 3.0 to php or asp.net sample

this a small example for sending and retrieving data from serverside scripts like php , asp.net or any thing

package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.net.URLLoader;
import flash.net.URLRequest;
import flash.net.URLVariables;
import flash.net.URLRequestMethod;

/**
* ...
* @author Anil Mathew
*/
public class Main extends Sprite
{
public var loader:URLLoader; //url loader
private var _url:String // the url string
private var _req:URLRequest; // url request
public var _vars:URLVariables; // url variables
public function Main():void
{
 if (stage) init();
 else addEventListener(Event.ADDED_TO_STAGE, init);
}

private function init(e:Event = null):void
{
 removeEventListener(Event.ADDED_TO_STAGE, init);
 // entry point
 _url = "http://www.yahoo.com/";// url where we need to post the data
 _req = new URLRequest(_url);// url request instance
 _req.method = URLRequestMethod.POST ; // metheod to use for the request
 _vars = new URLVariables();// url variables
 _vars.name = "Myname"; // sending name
 _vars.age = 21; //sending age
 loader = new URLLoader(); //loader instance
 loader.load(_req); //loading request
 loader.addEventListener(Event.COMPLETE, completeHandler);// event handler for complete event


}

 private function completeHandler(event:Event):void {
         trace(event.target.data); // returned data
     }


}

}