How to register with Google in PHP?

Question

Google

I am looking for information on how to register, but everywhere only authorization.
When receiving a token after authorization, I get the following data
Array
(
[error] => invalid_request
[error_description] => Could not determine client ID from request.
)

I understand that I am being told that there is no such user?
If so, how do I register it? Is it even possible to register?

Answer 1

That's right, only authorization through Google. After that, you can already register it on your site with the user ID received from Google.