public function getChildCids($rid, &$cids)
 {
     global $_FANWE;
     $root_cate = $_FANWE['cache']['goods_category']['all'][$rid];
     $cids[] = $rid;
     if (isset($root_cate['child'])) {
         foreach ($root_cate['child'] as $cid) {
             ShareService::getChildCids($cid, $cids);
         }
     }
 }