And a second thing: If a website visitor who already registered to my website with his fb account before and who is already logged in into his facebook account then I need a code that automatically receive his facebook user id and bring it to a callback function.
18 freelancers are bidding on average €156 for this job
We are Facebook GURU, We have a team of well experienced and highly qualified Developers to do this job and we Produce Quality results at very reasonable Prices. Please check your PM for proposal details.
Our objectives are great customer service with broad experience and affordable Implementation. Our Slogan : "No Satisfaction, No Payment". We have more than 1000+ clients around the world.