Core fields are aliased...
Dynamics are not and so are referenced by their proplabel information
core aliases :
$uid = pnUserGetVar('uid');
$uname = pnUserGetVar('uname');
$name = pnUserGetVar('name');
$email = pnUserGetVar('email');
$femail = pnUserGetVar('femail');
$url = pnUserGetVar('url');
$timezone_offset = pnUserGetVar('timezone_offset');
$user_avatar = pnUserGetVar('user_avatar');
$user_icq = pnUserGetVar('user_icq');
$user_aim = pnUserGetVar('user_aim');
$user_yim = pnUserGetVar('user_yim');
$user_msnm = pnUserGetVar('user_msnm');
$user_from = pnUserGetVar('user_from');
$user_occ = pnUserGetVar('user_occ');
$user_intrest = pnUserGetVar('user_intrest');
$user_sig = pnUserGetVar('user_sig');
$bio = pnUserGetVar('bio');
//OR
$userinfo = pnUserGetVars($uid);
$uname = userinfo['uname'];
$name = userinfo['uname'];
$email = userinfo['uname'];
$femail = userinfo['uname'];
$url = userinfo['uname'];
$timezone_offset = userinfo['timezone_offset'];
$user_avatar = userinfo['user_'];
$user_icq = userinfo['user_'];
$user_aim = userinfo['user_'];
$user_yim = userinfo['user_'];
$user_msnm = userinfo['user_'];
$user_from = userinfo['user_'];
$user_occ = userinfo['user_'];
$user_intrest = userinfo['user_'];
$user_sig = userinfo['user_'];
$bio = userinfo['bio'];
I may forget one or two...
And as you found out, dynamics are by their label
$_TEST = pnUserGetVar('_TEST');
//or
$_TEST = $userinfo['_TEST'];
--
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