I need a PHP Programmer to Write the Needed Facebook PHP-SDK 4 code needed to Determine if a User is logged into Facebook, If not let them login and then get the users likes to determine if they like a specific page. This must work within a CANVAS App on Facebook. The user cannot enter our Photo competition before they have not liked the Organisations Facebook Page. The User then after liking our Page, gets redirected to our competition App. But that is already developed.