static function detectMemberships()
{
$sql = "SELECT brand_id, member_id FROM members WHERE user_id IN (?)";
$rows = DBquery::get($sql, array(self::$user_id));
if ($rows) {
self::$memberships = array();
foreach ($rows as $r) {
self::$memberships[$r['brand_id']] = $r['member_id'];
}
}
}
