使用htaccess重定向两个文件

Question

this is my scenario. My application urls are showed like this:

example.com/index.php/article/whatever/here

in order to remove the index.php from url I have put this in my .htaccess and works fine:

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

Now, my problem is that I have include and admin.php like this:

example.com/admin.php/manage/whatever/here

And I don't know how to remove the admin.php from url without make conflics with the index.php because I have tried this and a 500 Internal Server Error is showed:

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

EDIT

Another try was this and nothing, because a 404 error is showed:

RewriteEngine On   
RewriteCond %{REQUEST_FILENAME} !-f  
RewriteCond %{REQUEST_FILENAME} !-d  
RewriteRule ^/(.*?)/(.*) /$1/$2 [L]

ALL my urls should have several parameteres as requiered:

example.com/this/is/a/large/url/because/is/requiered

EDIT 2:

I have create two rules, each rule alone works fine!!! but both can't work together:

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

Answer 1

Try:

RewriteEngine On   
RewriteBase / 

RewriteCond %{REQUEST_FILENAME} !-f  
RewriteCond %{REQUEST_FILENAME} !-d  
RewriteCond ${REQUEST_URI} ^admin/(.*)$ [NC]
RewriteRule ^(.*)$ /admin.php/$1 [L]

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

Then at least test this with:

http://www.example.com/some/url
http://www.example.com/admin/some/url