I would like to set up my codeigniter projects so I can use it in any folder on my webserver. Unfortunately codeigniter requires me to specify the location in several variables of the config. This is a problem for portability.

There are 3 places where I see this:

1) $config['base_url'] 
2) $config['base_path'] 
3) .htaccess RewriteRule

So far, I have found the solution to (1) here: http://codeigniter.com/wiki/Automatic_base_url/

I am looking for solutions to (2) and (3), but most importantly (3). Here is an example situation:

I set .htaccess to have the RewriteRule as follows:

RewriteRule ^(.*)$ /folderA/index.php/$1 [L]

Then I go into my repo and check out the project to another folder to make some separate changes. Now I have to update .htaccess to show the following:

RewriteRule ^(.*)$ /folderB/index.php/$1 [L]

I would like to set it so I dont have to make any config changes when I check out another copy.