.htaccess redirect domain to subdirectory without changing URL

Question

I have the following setup: -> domain1.com is my main domain and also document root -> domain2.com is another domain which is registered as an alias domain (means it does ex

Answer 1

You can use this rule:

RewriteCond %{HTTP_HOST} ^(www\.)?domain2\.com$ [NC]
RewriteRule !^subdir/ /subdir%{REQUEST_URI} [L,NC]

This will prefix every request for domain2.com with /subdir if it is not already there.