Need advice on SEO friendly URLs

[eluser]brianw1975[/eluser]
I wouldn't even use mod_rewrite....

read http://ciuserguide/general/routing.html

Code:

$route['([A-Za-z]+)/([A-Za-z]+)/([A-Za-z]+)'] = "region/$1/country/$2/city/$3";

of course region is the controller, country is the function and city is the var

Code:

function city($cityname){};

I think that should (read: might?) be able to do your routing.

I never was very good at RegEx...

of course you will want to put in checks for valid entries, and some modifications for city and country names with spaces, etc.