Developing php cookie functions

We need some body to develop a php functions to deal with cookie, simply we need four functions (excatly) : 1) read_cookie // which will read the available cookie variable 2) create_cookie // which will create cookie in case it wasn't available 3) check_cookie //which will do some check through the available value that was returned by read_function 4) update_cookie // which will update the cookie and will set the new values of the cookie more details is available within the attached file. our budget for this task is 50$ the work shall be developed and tested within one day from selecting the winner.