ErrorDocument 404 /error_404.php
RewriteEngine On
RewriteBase /
# If the requested file doesn't exist, but a file of the same name exists
# with .php appended to it, serve the .php file.
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^(.*)$ $1.php [L,QSA]
# If the user requests a .php file directly, issue a 404 error.
RewriteCond %{THE_REQUEST} "^[^ ]* .*?.php[? ].*$"
RewriteRule .* - [L,R=404]
