How to deny access to all .php except index.php?

Question

htaccess

And in all nested directories. Only index.php from root can be accessed.

htaccess now says this

<Files *.php>
  Order Deny,Allow
  Deny from all
#	Allow from 127.0.0.1
</Files>

<FilesMatch "(?i)((\.php|\.tpl|\.html|\.exe|\.ini|\.log|(?<!robots)\.txt))">
  Order Deny,Allow
  Deny from all
</FilesMatch>

<Files ~ "(index|r)\.(ph?p)$">
  Order Allow,Deny
  Allow from all
</Files>

Answer 1

<Files .*>
    Require all denied
</Files>

Answer 2

If Apache 2.4

Require expr %{REQUEST_URI} !~ m#^(?!/index\.php$).*\.php#