远程上传宽度curl/php

我有问题，我想远程上传文件到filefactory，。。。我成功登录并转到上传页面，但当我发布字段时出现错误："未发送文件数据"。有人能帮忙吗？

我的代码：

//user data
$email="somebody@yahoo.com";
$pass="somepass";
$cookie="cookie.txt";
//url data
$host="http://www.filefactory.com";
$logURL="http://www.filefactory.com/member/login.php";
//postdata
$logPOST="email=".urlencode($email)."&password=".urlencode($pass);
//login
$ch=curl_init();
curl_setopt($ch, CURLOPT_URL, $logURL);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $logPOST);
curl_exec($ch);
curl_close($ch);
//go to uploads section
$uploadRefferer="http://www.filefactory.com/u/local/?login=1";
$uploadURL="http://upload.filefactory.com/upload.php";
$filename="@test.png";
//try to upload file
$ch=curl_init();
curl_setopt($ch, CURLOPT_URL, $uploadURL);
curl_setopt($ch, CURLOPT_REFERER, $uploadRefferer);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS,ALL FIELDS THAT I NEED);
curl_exec($ch);

文件test.php与cookie和index.php在samo文件夹中（运行此文件）。。。在本地主机、服务器上尝试，但不起作用。