customization - Enabling Sessions in WordPress 3.0 in WordPress

If you need to manually enable the session globally, use this in your functions.php (I included a line for manually setting a session variable as an example,t required):

add_action('init', 'session_manager');
function session_manager() { if (!session_id()) { session_start(); } $_SESSION['foo'] = 'bar';
}

and if you wanted to manually clear the session on an event (like logging out):

add_action('wp_logout', 'session_logout');
function session_logout() { session_destroy();
}