how to get an access code when a facebook user is not involved

I am the owner of a facebook like page. I want to grab the news feed 开发者_Python百科using php and output it on my website. I know that I can do this using a valid access token:

https://graph.facebook.com/my_app_id_here/feed?access_token=My_access_token_here

Problem access tokens expire so I know I need to authenticate periodically to get a new access token.

This is where the problem and confusion arises for me. When I read the authentication guide in the facebook dev docs all it talks about is first authenticating the user to get a authorization code from the user and then authenticating the app using the app secret, app id and auth code fromthe user. But this doesn't apply to my situation - I never have a authorization code form the user - all I'm trying to do is access the feed from a php script running on my server....a user is never involved.

Any ideas anyone?

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User has to approve your application only once, and later use they can just access your app and use it without approving

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Since you are the owner of the like page, I guess you are also the administrator. What you can do in this case is create an offline access token for this (and only for that) user.

You can then use this access token for your script. No user needs to authenticate anything if you only want to grab the feed of your page with the access token of your administrator.

This token never expires except for changing the user's password or taking away permissions again. Look at this answer to see how to create such an offline access token!

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It seems offline_access is no longer available. Now you only get a short-lived access_token and you can ask for a long lived one, which is also renewable. You can't get a permanent one though.