Find if user is invisible

[Swedie]

What's the code to find whether a user by $userid is invisible or not.

I try to understand the vB code but I don't seem to be able to use it for my own code. Such as print or if (fetch_online_status($userid)) ... etc.

So I how can I check if the user is invisible or not by a userid? This status is not set anywhere in any table field values.

thanks!