删除URL .php扩展名会导致404错误

I am rewriting my url to get rid of the .php extension (and hopefully the get variables too as all the help I have gotten is great, but still wont work.

Here is my code:

Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /

## hide .php extension
# To externally redirect /dir/foo.php to /dir/foo
RewriteCond %{THE_REQUEST} ^[A-Z]{3,}\s([^.]+)\.php[\s?] [NC]
RewriteRule ^ %1 [R=301,L]

# To internally forward /dir/foo to /dir/foo.php
RewriteCond %{REQUEST_FILENAME} !-f 
RewriteRule ^([^\.]+?)/?$ $1.php [NC,L] 

Now when I use this code, it takes the .php out, but then the error says:

Not Found

The requested URL /index.php was not found on this server.

Meanwhile, if I take that code out, it works fine, but has the .php extension