How to replace underscore with hyphen ?

I know we can declare that in config/routes.php  but is there any other solution since there are a lot of controllers ...

Yes, you can declare it on every depending route or with a global config in rutes:

$route['translate_uri_dashes'] = true|false;

See here for details (on the bottom): http://www.codeigniter.com/userguide3/ge...uri_dashes

Does this work for you? Otherwise you have to overwrite the CI_Router Class.

Yes, you can declare it on every depending route or with a global config in rutes:

$route['translate_uri_dashes'] = true|false;

See here for details (on the bottom): http://www.codeigniter.com/userguide3/ge...uri_dashes

Does this work for you? Otherwise you have to overwrite the CI_Router Class.

That's a CI3 feature.

@Narf: your right .. i dont looked at the board title.

Ok again, there are some usefull examples arround the web. The goal is to overwrite the routing class with an own logic like

Create a file in 'application/core' and name it to 'MY_Router.php'

PHP Code:

class MY_Router extends CI_Router
{
    function _set_request($segments = array()) {
        parent::_set_request(str_replace('-', '_', $segments));
    }
} 


A more complex solution are described here http://upshots.org/php/codeigniter-hyphenated-urls