How to Automatically Add the "www" Prefix to Your Domain Names in URLs

How to Automatically Add the "www" Prefix to Your Domain Names in URLs

To redirect (say) example.com to www.example.com, add the following code to your .htaccess file.

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