用request和loder出错，求助！

var requestURL:URLRequest=new URLRequest("http://127.0.0.1/index.php");
var variables:URLVariables=new URLVariables("name=T&sex=man");
requestURL.data=variables;
requestURL.method=URLRequestMethod.POST;
var loder:URLLoader=new URLLoader(requestURL);
下面的代码或许可以忽略。
loder.addEventListener(Event.OPEN,openE);
loder.addEventListener(ProgressEvent.PROGRESS,progressE);
loder.addEventListener(Event.COMPLETE,completeE);
loder.addEventListener(HTTPStatusEvent.HTTP_STATUS,statusE);
loder.addEventListener(IOErrorEvent.IO_ERROR,ioE);
loder.addEventListener(SecurityErrorEvent.SECURITY_ERROR,securityE);
出错提示是打开 URL 'http://127.0.0.1/index.php' 时出错
statuse:[HTTPStatusEvent type="httpStatus" bubbles=false cancelable=false eventPhase=2 status=0 responseURL=null]
ioE:[IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032: 流错误。 URL: http://127.0.0.1/index.php"]