minongyun.com/application/admin/controller/Printt.php

<?php

namespace app\admin\controller;


use app\common\controller\Backend;
use think\Db;


class Printt extends Backend
{
    protected $noNeedLogin = ['get_printt'];

    public function index(){
        $date = substr(date("Ymd",time()),2);
        $this->assign('date',$date);
        return $this->view->fetch();
    }

    public function get_printt(){
        //接到内容进行数据库查询 保证打印数据与数据库保持一致，如果没有返回空，自定义打印
        $barcode = input('barcode');
        $barcode_array = explode("\n",$barcode);
        foreach ($barcode_array  as $k=>$v){
            $formula_material[$k] = Db::name('formula_material')->field('m_name,name')->where('m_name',$v)->find();
        }
        if($formula_material == null){
            return '';
        }else{
            return $formula_material;
        }
    }
}