UPDATE: Version 2.0 - Oct 4, 2011!
This article describes a plugin that I wrote that enables GeSHi syntax highlighting in CodeIgniter Sites.
This is a library (and hook) for CodeIgniter that will convert anything between ... tags to GeSHi-higlighted content. If you're not familiar with GeSHi, you can read more about it at the GeSHi Website ( http://qbnz.com/highlighter/).
I have a more detailed explanation of this plugin at the Github site: https://github.com/caseyamcl/geshiforci