Facebook validation for like button

I have created Facebook registration page, What i want to do is user can register once they have clicked the like button otherwise it should say like "Click on the Like Button" something like that.so system should check whethe开发者_Go百科r the button has been clicked or not.any one aware of it?

Check that your site appears in the user's likes feed:

https://graph.facebook.com/UID/likes?access_token=ACCESS_TOKEN

It it does then proceed with registration, else redirect their attention to the like button