title: WP Super Cache - prevent caching for php in header.php
body: <p>I have a Wordpress site with my own custom php code in header.php for a browser checker with ifs.</p>
  
  <p>When I use WP Super Cache every time my php code doesn't work, I think its because the result from my browser checker is cached. I have tried many different options in WP Super Cache.
  How can I prevent WP Super Cache from caching just the header.php file.</p>