微信带参数二维码

//$user_id 写入的参数值
function getcode($user_id){
        $appid="xxxxxx";
        $appsecret="xxxxx";
        $access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $access_token_url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $access_token_json = curl_exec($curl);
        curl_close($curl);
        $access_token_array = json_decode($access_token_json, true);
        $access_token = $access_token_array['access_token'];

        $data = '{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": '.$user_id.'}}}';
        $userinfo_url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=".$access_token;
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $userinfo_url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        $dlog_json = curl_exec($curl);
        curl_close($curl);
        $dlog_array = json_decode($dlog_json, true);
        $dlog = $dlog_array['ticket'];
        $userinfo_urls = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=".UrlEncode($dlog);       //得到数据流
        $imageInfo = $this->downloadImageFromWeiXin($userinfo_urls);
       //写入，生成图片
        $filename = APP_PATH."/image/".time().".jpg";
        $local_file = fopen($filename, 'w');
        if (false !== $local_file){
            if (false !== fwrite($local_file, $imageInfo["body"])) {
                fclose($local_file);
            }
        }
        return $filename;
    }