I need a regex to replace underscore by hyphen

Question

I have a problem with my application. I use CodeIgniter for my project and it's forbidden to use hyphen in classname (underscores are allowed). But I want to separate words in URLs by hyphens. So I need to rewrite urls by a regex to replace underscores by hyphens in htaccess file. Ideas?

For example:

I have many links:

• domain.tld/I_need_help

• domain.tld/I_need_regex

I want to have:

• domain.tld/I-need-help

• domain.tld/I-need-regex

In htaccess file, there should be:

RewriteRule ^(.*)_(.*)$ /$1-$2

Answer 1

You are allowed to use routes to change url as you want.

$route['link-to_something'] = 'class_name/some_function';

after your edit: try this one:

RewriteRule ^([^_]*)_([^_]*_.*) $1-$2 [N]
RewriteRule ^([^_]*)_([^_]*)$ /$1-$2 [L,R=301]

Answer 2

Ok after a long search. I have the solution:

Go to Codeigniter Routes regex - using dashes in controller/method names

Answer 3

Why you are using regex when you can achieve this by changing just the one line?

Open application/config/routes.php and change

$route['translate_uri_dashes'] = TRUE;

That is it you need to do.