まず、Apache サーバーで rewrite_module を有効にする必要があります
。次に、.htaccess ファイルは次のようになります -->
> <IfModule mod_rewrite.c>
> RewriteEngine On
> RewriteBase /rttt/
>
> #Removes access to the system folder by users.
> #Additionally this will allow you to create a System.php controller,
> #previously this would not have been possible.
> #'system' can be replaced if you have renamed your system folder.
> RewriteCond %{REQUEST_URI} ^system.*
> RewriteRule ^(.*)$ /index.php?/$1 [L]
>
> #When your application folder isn't in the system folder
> #This snippet prevents user access to the application folder
> #Submitted by: Fabdrol
> #Rename 'application' to your applications folder name.
> RewriteCond %{REQUEST_URI} ^application.*
> RewriteRule ^(.*)$ /index.php?/$1 [L]
>
> #Checks to see if the user is attempting to access a valid file,
> #such as an image or css document, if this isn't true it sends the
> #request to index.php
> RewriteCond %{REQUEST_FILENAME} !-f
> RewriteCond %{REQUEST_FILENAME} !-d
> RewriteRule ^(.*)$ index.php?/$1 [L] </IfModule>
>
> <IfModule !mod_rewrite.c>
> # If we don't have mod_rewrite installed, all 404's
> # can be sent to index.php, and everything works as normal.
> # Submitted by: ElliotHaughin
>
> ErrorDocument 404 /index.php </IfModule>