我试图使用Curl将库存文件上传到亚马逊。我可以登录到我的帐户和库存上传页面，但似乎无法设置正确的路径，因为每次上传文件时，它指示从本次上传处理的记录数-零。我想我的路径错误。我使用的是“@/home/path-to-file/file-name.txt”，我做错了什么？上载成功，但系统似乎无法定位文件。

<?php

$URL = 'https://sellercentral.amazon.com/gp/item-manager/ezdpc/uploadInventory.html/ref=ag_invfile_mmap_home';

$ch  = curl_init();

curl_setopt($ch, CURLOPT_URL, $URL);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);        
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

$page = curl_exec($ch);

$postFields['uploadType']    = 'PriceAndQty';
$postFields['uploadFileName']    = '@/home/path_to_file/inventory_file.txt';

$post = '';

foreach($postFields as $key => $value) {
    $post .= $key . '=' . urlencode($value) . '&';
}

$post = substr($post, 0, -1);

curl_setopt($ch, CURLOPT_REFERER, $URL);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

$page = curl_exec($ch); // make request