How to redirect using .htaccess file that redirects from clear domain to www.?

Question

How to redirect:

from mydomain.pl to www.mydomain.pl/start

and

from www.mydomain.pl to www.mydomain.pl/start using .htaccess file?

This should not interfere with any other page. Eg. when somebody types mydomain.pl/contact this should only add www. before the domain.

Answer 1

You can place this rule in your DOCUMENT_ROOT/.htaccess file:

RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} ^mydomain\.pl$ [NC]
RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI} [L,NE,R=301]

RewriteCond %{HTTP_HOST} ^(www\.)?mydomain\.pl$ [NC]
RewriteRule ^$ http://www.mydomain.pl/start [L,R]