如何使用cURL

Question

這裏是我的代碼來處理此重定向：

echo post_data("http://www.ifreewind.net/iFreeWind.aspx", 
       "__VIEWSTATE=%2FwEPDwULLTE3NjQ3MDc3NDQPZBYCAgMPZBYCAgEPFgIeB1Zpc2libGVoZBgBBR5fX0NvbnRyb2xzUmVxdWlyZVBvc3RCYWNrS2V5X18WAQUSUmVtZW1iZXJNZUNoZWNrQm94r57YdIUtbSps%2FGLW1PUtjxcILdE%3D&__EVENTVALIDATION=%2FwEWBQLKivfjBgLw2N3fDgLC9%2FChAwLxuKbKAgL%2BjNCfDwU6DJjH4Q2acTlGVXmDrSv2Nn4G&UserNameTextBox=myemailaddress%40gmail.com&PasswordTextBox=mypassword&LoginButton=%E7%99%BB%E9%99%86"); 

function post_data($site, $data){ 
    $datapost = curl_init(); 
    $headers = array("Expect:"); 
    curl_setopt($datapost, CURLOPT_URL, $site); 
    curl_setopt($datapost, CURLOPT_TIMEOUT, 40000); 
    curl_setopt($datapost, CURLOPT_HEADER, TRUE); 
    curl_setopt($datapost, CURLOPT_HTTPHEADER, $headers); 
    curl_setopt($datapost, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); 
    curl_setopt($datapost, CURLOPT_POST, TRUE); 
    curl_setopt($datapost, CURLOPT_POSTFIELDS, $data); 
    curl_setopt($datapost, CURLOPT_COOKIEFILE, "cookie.txt"); 
    ob_start(); 
    return curl_exec($datapost); 
    ob_end_clean(); 
    curl_close($datapost); 
    unset($datapost); 
} 

post_data()

函數的第二個參數，是用我的HttpFox產生的Firefox插件的結果。這些代碼不起作用，因爲這個地址自動重定向到

http://www.ifreewind.net/Users/Index.aspx

，所以我失敗了，請幫我通過授權。

Answer 1

curl_setopt（$ datapost，CURLOPT_FOLLOWLOCATION，真正的）;

Answer 2

嘗試：CURLINFO_EFFECTIVE_URL - 最後有效的URL

curl_setopt($datapost, CURLINFO_EFFECTIVE_URL, TRUE);