[Typo3-dev] How to prefill fields in Extension with frontenduserdata ?

[Jacob Lindhardsen]

I am making a table that should be filled with the userinfo of the logged-in
users info.

How would I go about that ?

if (userloggedin);
    $thisfield=$thisfield from the usertable; ?
else (nothing happens);

And more generally - how does one do that ?


Jacob from Denmark.