problem redirecting users to page on login

Question

I'm trying to redirect certain users to a part of my site but I cannot seem to make it work... can you take a look at this and tell me what I'm doing wrong?

if ( ! function_exists( 'redirect_after_login' ) ) :
    function redirect_after_login() {
        global $user_ID;
        if ( $user_ID === 4 ) {
            global $redirect_to;
            if (!isset($_GET['redirect_to'])) {
                $redirect_to = get_option('siteurl') . '/stock-de-sexitive/';
            }
   }
}
endif;
add_action('auth_redirect', 'redirect_after_login');

Also, I know globals are dangerous, so if you know of a canonical approach that would be great too

Answer 1

Try wp_redirect(). And don't forget to exit.