# Enable URL rewriting
RewriteEngine On

# If the file does not exist => Redirect to *.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*).htm$ $1.php

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*).html$ $1.php

DirectoryIndex index.html index.htm index.php