Apache / PHP Disable Cookies for Subdomain?

Question

I am trying to follow these guidelines to make my page load quicker.

I have created a static subdomain to load static content from, however it is advising me to not have cookies sent on this subdomain, any ideas on how I might be able to do this in Apache/PHP?

I've searched around and come up with nothing yet.

Answer 1

If you never explicitly set a cookie, cookies won't be present on the server. So, if you are using the second domain simply as a repository for images or CSS files, most likely no cookies are ever set.

Updated from Comments.

If you see a 'Request' cookie header to a subdomain you don't want to have cookies, clear your cookies and see if the server ever sends a cookie header in the Response headers. If it does, it is possible you have session.auto_start enabled, or you have a script that sets cookies.

You can check the Request and Response Headers using something like Firebug with Google Page Speed.