how to integate ci into wordpress ?

[eluser]Colin Williams[/eluser]
There's no blanket way to integrate CI and WordPress. It depends on what you want to do. One problem you might encounter is that WP has a very specific theming engine, with special functions for pulling in posts, plugins, etc. So, I would anticipate it might be a bit difficult to share templates between the two.

But as EEssam pointed out, you can change the name of your front controller for CI, index.php by default, so it doesn't clash with WP's front controller, also index.php by default. Refer to http://ellislab.com/codeigniter/user-gui..._apps.html for some more info.