SchoolPhysicalExamination/application/code/controller/Qrcode.php

<?php

namespace app\code\controller;
use think\Controller;
use think\Db;
use think\Cache;
use think\Log;

class Qrcode extends Base{
    
    public function ordinary_code(){
        
        // $num = Db::table('app_version_log')->order('id desc')->find();
        // echo '你好,这里仅仅是个展示页面-配合小白快乐成长&宠物小白使用';
        // echo '<br><a href="'.$num['download_url'].'">点击下载</a>';
        // $url = Db::table('app_version_log')->order('id desc')->find();
        // $this->assign([
            
        //     'url'  => $url['download_url'],
        // ]);
        return $this->fetch();
    }

    public function bluetooth_code(){
        
        $url = Db::table('app_version_log')->order('id desc')->find();
        
        
        $this->assign([
            
            'url'  => $url['download_url'],
        ]);
        return $this->fetch();
    }
    
}