.htaccess mod_rewrite in main directory and subdirectory - php

Question

I've a main directory with a .htaccess file that looks like this
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^ index.php [L]
The one in the subdirectory looks identical to this one. What I want the .htaccess files to do is redirect to the index file in each directory.
So if you visit main/example you get redirected to the index.php file in the main directory but if you visit main/subdirectory you get redirected to the index.php file in the subdirectory.
I've searched for an answer but haven't found anything that works.
Thankful for any help!

Answer 1

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)/ /$1/index.php [L]
This configuration do the following:
if we have this files
/index.php
/foo/index.php
/var/index.php
/var/boo/index.php
and you request the follow file
/foo/hello
you will go to:
/foo/index.php
and, if you request
/var/boo/world
you will go to:
/var/boo/index.php

Answer 2

Try
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond $1 -d
RewriteRule ^(.+)/ $1/index.php [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^ index.php [L]

Answer 3

You can use a simple solution like this one, no need to put .htaccess files everywhere
on your main directory you put one .htaccess file, you keep your code
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^ index.php [L]
and you add those two lines
Options All -Indexes
ErrorDocument 403 http://domain.com/index.php
these two lines prevent the user to access the folder, and returns the statut 403 and then you redirect your 403 statut to the adress of your index.php of your main directory