little .htaccess redirection

Add the following to your VirtualHost config for website.com

RewriteEngine On
RewriteCond %{HTTP_HOST} ^(www.)?website.com$ [NC]
RewriteRule ^(/)?$ fr [R=301,L]

Select allOpen in new window

The previous answer will result in an infinite loop.  It will also remove the file requested from the new URL.  Try this instead:

RewriteCond  %{HTTP_HOST} ^(www\.)?domain\.com$ [NC]
RewriteCond %{REQUEST_FILENAME} !^/?fr [NC]
RewriteRule ^/?(.*)$ /fr/$1

Select allOpen in new window

# "little" improved :)
RewriteCond  %{HTTP_HOST} ^(www\.)?domain\.com$ [NC]
RewriteCond %{REQUEST_URI} !^/?fr [NC]
RewriteRule ^/?(.*)$ /fr/$1 [QSA,L]

@routinet, is your REQUEST_FILENAME a typo? (it differs to REQUEST_URI in rare cases)

how would it work for localhost test?
thanks

I guess you simply can comment out

# RewriteCond  %{HTTP_HOST} ^(www\.)?domain\.com$ [NC]