hot link protection

[Net Master]

Hi all

I have install IMS in a sub domain in a separated host account

ims.my-domain.com

I want uploaded images to show only in:

ims.my-domain.com
www.my-domain.com
www.my-friend1-domain.com
www.my-friend2-domain.com

So I use .htaccess rules but it just not working!!

I think it because Image URL is in php format, not a direct link.


Can you confirm this and help me through it?

Thank in advance...