EllisLab/CodeIgniter — pull request #2535 by greenfire27 (2013-07-17 16:32:17+00:00)
Title: Secure and Unsecure Base_URL Functions

I found I needed these functions when I was making some of the pages on a site secure and other unsecure. I used base_url() for all the links on the site and these functions allowed me to force http and https on those links. Of course, I had to use the htaccess file to force the actual pages but these functions allowed me to get the correct links.