无法检索 google Oauth2 的刷新令牌

Cannot retrieve refresh token for google Oauth2

我在 php 中使用以下代码来检索访问令牌:

  $url ="https://accounts.google.com/o/oauth2/token";
$fields = array(
   "client_id"=>"{your client id}",
   "client_secret"=>"{your client secret}",
   "refresh_token"=>"{your refresh token 1/.....}",
   "grant_type"=>"refresh_token"
);

$ch = curl_init($url);

//set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_POST,count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

//execute post
$lResponse_json = curl_exec($ch);

//close connection
curl_close($ch);

问题是我收到以下错误:

"error" : "invalid_client", "error_description" : "The OAuth client was not found."

我已经尝试取消对应用程序的验证等,但仍然无济于事。 有人可以帮忙吗?

问题是我没有将 client_id 等包含在数组的“”中。 Curl 未正确发送请求。