Ok, so you need to change the script so that it calculates the dates of today and a week before today, instead of getting it from stdin, right? localtime(time()) will give you an array where you can extract year, month and day of today, subtract 7*24*60*60 from time() and you will get the date of one week before.

If that isn't what you are looking for, be more specific what you want or what isn't working. Post the relevant code. Use the right tags so we can read it, How (Not) To Ask A Question