Several differences between the work used in TP3.2 and TP5.0

First, the back-office processes

　　1) The database operation

　　　　TP5.0

　　　　Add insert delete delete search find select change update

　　　　TP3.2

　　　　Add add delete delete change save search find select

　　2). Display tab

　　　　TP5.0

　　　　$data = db('horseman_order ho')

    ->join('horseman h','ho.hid = h.id','left')
    ->join('merchants_food_order o',' ho.oid = o.id','left')
    ->join('user u','o.uid = u.id')
    ->where($where)
    ->paginate(10,false,['query'=>request()->param()]);
　　return $data;
　　$page(分页)  = $data->render();

　　　　TP3.2

　　$count = M('industry as i')->where($where)->count();
　　$page = new Page($count,10);
　　$show(分页) = $page->show();

　　　　$data = M('industry as i')

    ->join('ysk_industry_cate as ic on ic.id = i.cid','left')
    ->where($where)
    ->field('i.*,ic.name as cname')
    ->limit($page->firstRow,$page->listRows)
    ->order('create_time desc')
    ->select();
　　
　　3).映射数据和页面
　　tp3.2
　　//数据
　　　$this->assign([

'data'=>$data,
'page'=>$show,
'count'=>$count,
'param'=>$param,
'cate_data'=>$cate_data,
　　]);
　　//页面
　　$this->display();
　　//ajax 返回
　　$this->ajaxReturn($info);

　　TP5.0

　　//data

　　$this->assign([
    　　'data' => $data,
    　　'page' => $page,
　　]);
　　//页面
　　return $this->fetch('evaluate_index');

　　// ajax return return callback ( 0 , 'can not be less than the threshold of preferential discount amount' ); 

Second, page