Question

I know this question might have been asked a few times already, but I need a specific solution for CodeIgniter, using an .htaccess file that would send every request to an index_failsafe.php file instead of the normal index.php but ONLY if the url doesn’t start with ‘admin’. Example:

1. http://www.myhost.com/admin -> work as usual
2. http://www.myhost.com/welcome -> sent to failsafe page

in case 1:

RewriteRule ^.*$ index.php/$1 [L] 

in case 2:

RewriteRule ^.*$ index_failsafe.php/$1 [L] 

My rewrite conditions are:

   RewriteEngine On

    RewriteBase /
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d

Is it possible to do this?

Answer 1

Personally I do it by IP – so I can take my site offline, but I still have full access to it (to test new functions and make sure it is working before bringing back up)

RewriteEngine on

    # For maintenance:
    # If your IP address is 1.1.1.1 - then dont re-write
    RewriteCond %{REMOTE_ADDR} !^1\.1\.1\.1
    # If the person is requesting the maintenance page, also dont rewrite (prevent loops)
    RewriteCond %{REQUEST_URI} !/maintenance.html$ 
    # Otherwise rewrite all requests to the maintenance page
    RewriteRule $ /maintenance.html [R=302,L]


    # do not rewrite links to the documentation, assets and public files
    RewriteCond $1 !^(assets)

    # do not rewrite for php files in the document root, robots.txt or the maintenance page
    RewriteCond $1 !^([^\..]+\.php|robots\.txt|maintenance\.html)

    # but rewrite everything else
    RewriteRule ^(.*)$ index.php/$1 [L]

just change !^1.1.1.1 to your current IP. i.e. !^121.65.56.65

If your not sure what your IP is – just google “what is my IP” – and it will show up as the first hit

But in terms of your specific question – this should work:

RewriteCond %{REQUEST_URI} !/admin$ 
RewriteRule $ /index_failsafe.php [R=302,L]

edit: