Is it possible to use SHORTINIT for AJAX called php file and use a Wordpress shared $_SESSION global in it?
I have this thus far:
ini_set('html_errors', 0);
define('SHORTINIT', true);
require 'wp-load.php';
$_SESSION...
...and it really made that file load in a snap, but with SHORTINIT i can't seem to retrieve that file's $_SESSION variables in Wordpress. Commenting it out enables session sharing.