Facebook oAuth 2.0 Login using jQuery & PHP

Facebook has several login methods based on the devices like iOS, Android and Web. Here we are going to Implement Facebook oAuth2.0 Login with Javascript SDK without Page Refresh and also data should be store on MYSQL server as well. Millions of Websites and Apps are implemented Facebook Login into their sites to increase the registrations. I hope this simple tutorial will help you to implement in your PHP web based projects