How to redirect non-www to www URL's using htaccess?

Question

I have a website say http://www.example.com/ in the root of my website, I have added .htaccess file to redirect any request of http://example.com/ to http://www.example.com/

Recently I have created a new section "Videos" so the URL for videos is http://www.example.com/videos/ . In this video folder I have another htaccess file which is performing rewriting for video entries. When I am trying to access http://example.com/videos/ then its not redirecting me to http://www.example.com/videos/

I think .htacces is not inheriting the previous rules from the parent directory. Can anyone please tell me what can be the rule I can add in the .htaccess file of /videos/ folder so that any request for http://example.com/videos/ will be redirected to http://www.example.com/videos/ URL.

Answer 1

I think it may just be that your existing rule is too strict, and is not getting triggered in your subdirectory because of this. Something like this should work site-wide:

RewriteEngine on
RewriteBase /

RewriteCond %{HTTP_HOST} ^example\.com$
RewriteRule ^(.*) http://www.example.com/$1 [R=301]