Build social login form

I have a hotspot login page that I call from the local routers. This page should handle 2 types of authentication: - Local users: users that currently are stored into the database. A simple username/passowrd authentication - Facebook login: the script let you use your facebook credentials in order to navigate through the hotspot. It works this way: on the login page you click on "login with facebook", you are redirected to the facebook login page, you login and trust the app and then you are redirected on a page called login-callback .php. This page takes the email address and performs an insert into the database this way: user: email password: 1234567890. Then it performs the local authen tication and allows the user to navigate. In order to do this, it makes a json call to the hotspot authenticator and parse the data received. There is one more functions: the register login. A simple form that inserts on the local users table and, on future, sends a email. Really simple. At this poing the local authentication works, the register part should be fixed a bit and the facebook authentication gives me a strage error. It smeels like a session error. This is what I need from you, if hired: - My script is fine, but I'm not a programmer, so I need the code cleaned, well formed and -almost- bug free. You can organize the code the way you want, just use Standard stuff. And please use a lot of comments on the code. - I want to add one more function to the script. It should perform a checkin on facebook once the user is authenticated. It should take datas (spot name, coordinates or whatever is needed) from the database and check in on the user profile. After that, more functions will be added, I hope to start a continous working relationship. So please give attention to this project only if reliable in the future Thank you Luca Rossi