project/app/admin/controller/PurcheaseOrder.php

<?php
/**
* 采购单管理
*/
namespace app\admin\controller;
use app\admin\model\OrderNum;use think\App;

class PurcheaseOrder extends Base{
    public function __construct(App $app)
    {
        parent::__construct($app);
        $this->model = new \app\admin\model\PurcheaseOrder();
    }
    //再次同步采购单数据到结算
}