Login the site using Facebook option is not working in my PHP sites

Question

I 've created "login using facebook" sections in http://domain.com and http://domain.com/mysite sites. These sections were working fine till few weeks before. But from yesterday when I try to login using facebook to one of these sites, it shows an error

"An error occurred with your website. Please try again later."

and directly redirect to facebook account only. I also tried a demo link in tutorial site http://onlinewebapplication.com/facebook/ . it also shows the same error. I want to know that the problem is in coding part in the website or facebook changed anything in their system. Sorry for my bad english. Does anyone know a solution to fix this issue?

Answer 1

The endpoint www.facebook.com/login.php has been deprecated and taken out of action recently.

You'll have to rebuild your login procedure to comply with the techniques described here: https://developers.facebook.com/docs/concepts/login/login-architecture/

If you are using the PHP SDK to create the login URL – make sure you're using the latest version.