A small correction needed on a php script

Hello, I have a very simple project. I wrote a script which could update somone's Status on Facebook. It was working for quite a while, but now it just doesn't update any more. Attached is the php file with the script. These are the changes that need to be made to the script. 1. The error must be found and corrected so it successfully updates the Facebook status. 2. If the username and login provided are incorrect then it should print "Incorrect Login Details" and stop. 3. If the status is successfully updated it should print "Success". If you feel you can manage this please bid. Thanks