Special Note
If you face any issue regarding app issue then please follow the below url
make sure you enable the Enforce HTTPS and Use strict mode for Redirect URIs
Right now facebook don't allow non-ssl site to use facebook login. You must have to use ssl on your site.
Now you will get the auth redirect url in the social login settings Base url url of facebook section. Copy the section.
From here create a facebook app. Click the top right create new app green button. fill all the fields then submit.
after creating you app you will be redirected to your app dashboard. from theke go to settings panel and copy api kay and api secret. set app domain to ur domain name(just domain name no http/https). then from bottom add platform button set platform to website and set site key to ur website url. Then click save. Now copy your api key and secret.
