Php script to post facebook wall info in the background.

I have a picture sharing iphone app. People can upload a picture to the server and decide to post the picture to their facebook wall. I want a script to check the database every few seconds for a new picture or video that needs to be posted to facebook. It will post a link to the image to facebook along with some other information and then mark the image as posted. The database stores the facebook ID of the user. I would like to run this script as a daemon and have it loop every couple seconds. ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement). 2) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 3) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Employer's environment--Deliverables must be installed by the Worker in ready-to-run condition in the Employer's environment. b) For all others including desktop software or software the employer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this project. ## Platform PHP and mysql running on a ubuntu server