PHP gets the applet code, and the applet jumps with parameters

PHP Get the applet code , Applet jump with parameters

To get the applet code, you need to get Accesstoken , Here's how to get Accesstoken, Pay attention to the timeout, so I mentioned the time forward , When generating applet code, first call and obtain Accesstoken Methods

 // obtain accesstokn  And save 
    public function getAccessToken(){
    

        //$file_path = VENDOR_PATH.'wchat/access_token';
        $file_path = '../application/common/access_token';

        if(is_file($file_path)){
    
            $connect = file_get_contents($file_path);
            if($connect!=''){
    
                $ret = json_decode($connect,true);
                // Already exists 
                if($ret['access_token'] && time()-$ret['time'] <7000){
    
                    $this->access_token = $ret['access_token'];
                    return true;
                }
            }
        }

        $wx_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={
      $this->wxAppId}&secret={
      $this->wxAppSecret}";
        $ret = httpUtil($wx_url);
        $ret = json_decode($ret,true);
        if($ret['access_token']){
    
            $data = array(
                'access_token'=>$ret['access_token'],
                'time'=>time()
            );
            file_put_contents($file_path, json_encode($data));
            $this->access_token = $ret['access_token'];
            return true;
        }
    }

// Get the applet code 
    public function getQrCode($openid){
    
        $this->getAccessToken();// to update accesstoken
        $url = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=$this->access_token";// Official access applet code url
        $data['page']='pages/index/index';// The jump page address of the applet 
        $data['scene'] = "$openid";  // Request parameters 
       
        $res = httpUtil($url,json_encode($data),'POST');
        if(!empty($res['errcode'])){
    
            return false;
        }
        $file ="qrcode/$openid.jpg";
        file_put_contents('./'.$file,$res);
        if (file_exists($file)) {
    
            //return $_SERVER ['HTTP_HOST'].'/'.$file;
            return '/'.$file;
        }else{
    
            return false;
        }
    }