// check if loginbis was the bestalias
$res = XDB::query("SELECT alias FROM aliases WHERE id = {?} AND FIND_IN_SET('bestalias', flags)", $uid);
$bestalias = $res->fetchOneCell();
if ($bestalias && $bestalias != $loginbis) return false;
// check if loginbis was the bestalias
$res = XDB::query("SELECT alias FROM aliases WHERE id = {?} AND FIND_IN_SET('bestalias', flags)", $uid);
$bestalias = $res->fetchOneCell();
if ($bestalias && $bestalias != $loginbis) return false;