RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(([^/]+/)*[^.]+)$ /$1.php [L]
RewriteCond %{REQUEST_URI} ^/index$ [OR]
RewriteCond %{REQUEST_URI} ^/index[.]+(\w+)$
RewriteRule . / [R=301,L]