在下面的代码中我得到错误failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request
$url = "https://graph.facebook.com/$orderId";
$url_with_token = $url . "?access_token=$token";
$result= json_decode(file_get_contents($url_with_token));
请让我知道我哪里出错了