SSL certificates and session variables

[eluser]dadamssg87[/eluser]
Hi all,

I've been developing with CodeIgniter for a few months. Now i'm trying to start understanding how to implement an SSL certificate to develop an ecommerce site. I've read a few of other threads about the topic.

It seems that you can have a non secure directory that holds all your codeigniter files, an https secure directory to hold js, css, images, and a second copy of your codeigniter. The idea being that you would use the unsecure codeigniter to add products to your shopping cart then once you're ready to check out you would link it to the https directory to checkout. And you would need to modrewrite your .htaccess file to make sure any attempts to access, say, http://example.com/index.php/checkout/index, it would get redirected to httpS://example.com/index.php/checkout/index.

My question is: Will the codeigniter session variables(shopping cart) hold up when transferring from http to https?