将文件从Flash上​​传到服务器PHP

Question

I'm going to upload files from flash to server. When user begin, input his username , then I send it to php, this way:

    var myusername:String = username.text;
    username.restrict = "A-Za-z0-9";
    login_btn.addEventListener(MouseEvent.CLICK,login);
    function login (evt:MouseEvent):void{

    var loader : URLLoader = new URLLoader();
    var request:URLRequest = new URLRequest("http://domain/uploads/upload.php");
    request.method = URLRequestMethod.POST;
    var variables:URLVariables = new URLVariables();
    var userid:String = myusername;
    variables.ID = userid;
    request.data = variables;
    loader.load(request);
}

upload.php :

<?php
$myuser = $_POST['ID'];
$uploads_dir = './uploads/'.$myuser;

if( $_FILES['Filedata']['error'] == 0 ){
    if( move_uploaded_file( $_FILES['Filedata']['tmp_name'],
         $uploads_dir.$_FILES['Filedata']['name'] ) ){
        exit();
    }
}
echo 'error';
exit();
?>

The problem is that files upload to uploads folder not in user folder. Anyone could help me please?

Answer 1

What is the value of $_POST['ID'] ?

I don't see you setting that anywhere in the request. There's this:

variables.UID = userid;

But wouldn't that be $_POST['UID'] and not $_POST['ID'] ?