HERE REST API OAuth 2.0 Token Request (with a 1.0 header) Error
问题 I've been trying to get my PHP application to create a successful token request since finally managing to get it working with Postman as per the docs here Apparently the API is using OAuth 2.0 which is why I expect to send up grant_type , client_id , client_secret and expires_in (if I don't specify one of these fields then the API will successfully tell me it is missing). Now the problem I am having is with this OAuth 1.0 Authorization Header that I am having to generate, which Postman seems