Is there a way to add some php code to the Confirmation message that is under Settings/Confirm Options?

Basically when my form is submitted,on the confirmation page I need to display 180 days from today's date. My form is an application for a permit, which expires 180 days from the date it was submitted. I can display the submitted date, but have not figured out how to insert the php code that adds 180 days from today's date.

Thanks.

How about sending the data to a mysql then make and redirect to your own confirmation page with the proper php code squeezing the date from it.

I think this should work. Use the value from a mysql database as Eric said.
<?php
//I had to put my time zone in to test but it seems to work
date_default_timezone_set('Australia/Sydney');
echo date('Y-m-d', strtotime($Date. ' + 180 days'));
?>
I get from Oct 27th 2012 + 180 days = 2013-04-25
This will get you started.