How to redirect multiple folders to the reflecting subdomain with .htaccess

Answer 1

Try with this:

RewriteCond %{REQUEST_URI} ^/yoursub

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^(.*)$ http://yoursub.domain.com/$1 [L]

The 2 lines in the middle will prevent redirecting if that folder or file exists. To remove file and folder exception, comment out that 2 lines, and stay with this only:

RewriteCond %{REQUEST_URI} ^/yoursub
RewriteRule ^(.*)$ http://yoursub.domain.com/$1 [L]