{"error":"unsupported_grant_type"}

[magnusmurel]

Hey, I'm using the php sdk api https://github.com/jwilsson/spotify-web-api-php

and trying to connect the user. I log in using the link

https://accounts.spotify.com/authorize?
client_id=--id--
&redirect_uri=https%3A%2F%2Fwww.testsite.com%2Fspotify_connect%2F
&response_type=code
&scope=user-read-email

and get a code in return and I've traced the code towards the curl in Request->send()

the full link is

https://accounts.spotify.com/api/token?
client_id=--client--&
code=--returned_code--
&grant_type=authorization_code
&redirect_uri=https%3A%2F%2Fwww.testsite.com%2Fspotify_connect%2F
&client_secret=--secret--

I get this in return:

{"error":"unsupported_grant_type","error_description":"grant_type parameter is missing"}

I've tried sending the authorization in the header as well. Same result

Authorization: Basic base64_encode(--clientid--:--clientsecret--);

What am I doing wrong?

Using the

https://accounts.spotify.com/api/token?grant_type=client_credentials

is working like a charm, but using the code I get in return does not work.

Thanks for help 🙂

[magnusmurel]

I found that if I edit the code to not use http_build_query($parameters);

to convert array of parameters into the url-string, but pass the strings directly to the url it works. So how is http_build_query destroying the grant_type= authorization_code?