Remove server.php using htaccess got error 500

I have a website that can be accessed in two ways:

1. http://localhost/public/blog
2. http://localhost/server.php/blog

I use the code below to remove the "public" from the url, and its work.

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteRule ^(.*)$ public/$1 [L]
</IfModule>

so i try to remove server.php using the same code, just change "public" to "server.php". But its does not work.

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteRule ^(.*)$ server.php/$1 [L]
</IfModule>

Server return error code 500.

So my expectation from the second code is address "http://localhost/server.php/blog" can be access without server.php in there (http://localhost/blog).

via Chebli Mohamed