Facebook App access token to manage pages without having user to login to get user access token - facebook

Question

I've read alot of topis, alot of docs. Literally i read them since morning.
From what I got there are few kind types of tokens: App token, App access token, User Token, User access token, Page access token.
While tokens with access allow some kind of action. the non-access tokens seem to allow me to generate a token of access type. Corrent me if I'm wrong. Docs are terrible and some answers are outdated due to facebook updates.
So basically, what I look for is to be able to:
$permanent_token = 'A token, which will allow me to generate access tokens whenever I request';
// And that token could be used for:
file_get_contents('https://graph.facebook.com/v2.1/me/accounts/?access_token='.$permanent_token);
// Some code here to extract page access token and write it to variable $app_token
file_get_contents('https://graph.facebook.com/v2.1/{page_id}/ratings/?access_token='.$app_token);
// Note: I may've missed some steps... those are the ones I lack I think.
Without having to make any user (including me) to login. It's more like I need some kind of API Key and method to generate access token.
And would prefer NOT to use facebook SDK. Just pure graph url calls.

Answer 1

This is the most import page to read about Access Tokens: https://developers.facebook.com/docs/facebook-login/access-tokens
There is the App Token, the User Token and the Page Token. A User Token can be extended to 60 days, a Page Token can be extended to be valid forever.
/me/accounts needs a User token, so there is no permanent Token to use that endpoint.
/{page_id}/ratings/ needs a Page Token and you probably want an extended one.
How to get an Extended Page Token is explained very well int he Facebook docs, here are some articles:
https://developers.facebook.com/docs/facebook-login/access-tokens
http://www.devils-heaven.com/facebook-access-tokens/
http://www.devils-heaven.com/extended-page-access-tokens-curl/
Btw, i suggest not using file_get_contents but CURL.
And in order to get a User Token or Page Token, you MUST authorize/login with a User account. One that is admin of the Page, obviously.

Answer 2

If You are trying to get photos and captions like me, You could do like this:
Enter on facebook developer page: facebook developer
Create an app to the page. (I created to a not mine page)
Access on facebook developer menu: Tools & support and select access token tools.
There you'll find: User token - App token.(There some important text on the top)
copy App token. (should not be hard coded where is possible to see like on javascript)
create a php file to return a JSON.
use file_get_contents($url) function to get a facebook JSON.
echo the file_get_contents return.
finally, get on your page your own returned JSON from the created php file with the data desired and use it.
Obs: My URL is something like this: https://graph.facebook.com/desiredpage/photos?type=uploaded&access_token=013245667890|qwer-adsFGsfgsdGsfg
pay attention to the token on the URL that I pasted.