Google OAuth2 通过 cURL (PHP) 返回“unsupported_grant_type”

我想获取有关谷歌帐户的数据。我使用下一个代码：

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://www.googleapis.com/oauth2/v4/token',
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 30,
    CURLOPT_HTTPHEADER => [
        'Cache-Control: no-cache',
        'Content-Type: application/x-www-form-urlencoded',
    ],
    CURLOPT_POSTFIELDS => [
        'code' => $code,
        'client_id' => '{MY_CLIENT_ID}',
        'client_secret' => '{MY_CLIENT_SECRET}',
        'redirect_uri' => '{SOME_URL}'
        'grant_type' => 'authorization_code',
    ]
));

$result = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

结果我得到下一个错误：

{
    "error": "unsupported_grant_type",
    "error_description": "Invalid grant_type: "
}

我使用来自此的说明：

https://developers.google.com/identity/protocols/OpenIDConnect https://developers.google.com/identity/protocols/OpenIDConnect

多变的$code另一个数据有效！因为我尝试通过“PostMan”发送请求，并且在那里我得到了正确的结果。

请告诉我，我哪里有错误？

尝试这样做：

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://www.googleapis.com/oauth2/v4/token',
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 30,
    CURLOPT_POSTFIELDS => http_build_query([
        'code' => $code,
        'client_id' => '{MY_CLIENT_ID}',
        'client_secret' => '{MY_CLIENT_SECRET}',
        'redirect_uri' => '{SOME_URL}'
        'grant_type' => 'authorization_code',
    ]),
));

顺便说一句，您可以使用调试curl请求

CURLOPT_VERBOSE => true,