392548 Iphone application for web API

I have a website witch has API for XML data exchange. The IPhone application will use the API ( HTTP get or post) to retrieve /upload XML data with the database of my site. Here is some basic API functions: user can login and get token. user can retrieve XML data ( story and category, comments .. ). user can submit story and comments after login. user can random retrieve XML data based on different query string. user can vote The iphone application must use the API talk to the server and display XML data in a nice organize style. It can also share the data with contacts through email or short message. The application must support UTF8 characters. please refer the application here for additional explanation, i want to have the application does the same function and looking as this. [login to view URL] Expert has PHP web service skills , who can help me design additional API is a plus. I can work closely with anyone who are interesting to handle this project. Should there was any additional information needed, please send me messages. Thank you for your time and good luck. Steven