title: how to exclude one subdomain from subdomains that share SESSION variable
body: <p>I had a cookie-free subdomain (static) until I used this code to make my session variable visible in all sub-domains:</p>
  
  <pre><code>session_set_cookie_params(0,'/','.example.com');
  </code></pre>
  
  <p>apparently, By doing so, I have lost cookie-free characteristic of the "static" subdomain.</p>
  
  <p>How could I have one session variable visible in  all subdomains except the static one?
  thank you for helping</p>