Is there a way without changing the whole configuration of CodeIgniter to get the URI segment for function ($this->uri->segment(2)) as a regular query string instead of being directly mapped to a function?
For example, I would be forced to have a URL like this:
http://localhost/books/functionName/bookNumber
I would like to have the bookNumber number right after the controller name (books):
http://localhost/books/bookNumber If I have the URL like this it would map the bookNumber to a function name.
You could use CodeIgniter's URI Routing to achieve your desired URL format.
If you add the following route to application/config/routes.php, then any URL that is entered that matches the route on the left, will map to the controller/function on the right:
$route['books/(:num)'] = "books/functionName/$1";
This will map a URL such as http://localhost/books/123, to the functionName function, in the books controller, passing 123 as the parameter.
This assumes that your 'book numbers' are always numbers (it would not work for strings), as (:num) will match segments only containing numbers.