public function get()
 {
     $order = $_REQUEST['order'];
     $seq = $_REQUEST['seq'];
     $page = (int) $_REQUEST['page'];
     $page_size = $_REQUEST['page_size'] ? $_REQUEST['page_size'] : 20;
     $keyword = trim($_REQUEST['keyword']);
     $service = new CompetitorAd();
     $list = $service->get_competitor_ads_stat($order, $seq, $keyword);
     $total = count($list);
     $list = array_slice($list, $page * $page_size, $page_size);
     $this->output(array('code' => 0, 'msg' => 'ok', 'list' => $list, 'total' => $total));
 }