分頁顯示當前頁數

 //商品列表
    public function goods_list()
    {
        if(Request::instance()->param("page"))
        {
            $page=Request::instance()->param("page");
        }else{
            $page=1;
        }
        $count=Db::table("goods")->count();
        $tiao=3;
        $zong_page=ceil($count/$tiao);
        $limit=($page-1)*$tiao;
        /*$arr=Db::query("SELECT g.goods_id,g.goods_name,g.goods_sn,g.goods_price,g.sort,p.product_id,p.sku from goods as g left join
product as p ON g.goods_id = p.goods_id group by goods_id limit $limit,$tiao");*/
        $arr=Db::table("goods")
            ->alias('g')
            ->field('g.goods_id,g.goods_name,g.goods_sn,g.goods_price,g.sort,p.product_id,p.sku')
            ->join('product p','g.goods_id = p.goods_id')
            ->group('goods_id')
            ->limit($limit,$tiao)
            ->select();
        //var_dump($arr);die;
        $show['shou_page']=1;//首頁
        $show['shang_page']=$page-1<1?1:$page-1;//上一頁
        $show['xia_page']=$page+1>$zong_page?$zong_page:$page+1;//下一頁
        $show['wei_page']=$zong_page;//尾頁
        $show['zong_page']=$zong_page;//總頁
        $show['count']=$count;//總條數
        $show['p']=$page;//當前頁數
        $data=['arr'=>$arr,'show'=>$show];
      //  var_dump($arr);die;
        return view("goods_list",['data'=>$data]);
    }