[移动开发]PHP生成小程序二维码

//获取小程序qrcodes
    public function qrcodes(Request $request)
    {
        $goods_id = $request->input('goods_id');//商品ID
        $invite_id = $request->input('invite_id');//邀请人ID
        if(!$goods_id){
            return response()->json($this->errors('缺少参数'));
        }

        $AccessToken = Cache::get('access_token');//获取access_token
        if(!$AccessToken){
            $AccessToken = $this->get_access_token();
            if(!$AccessToken){
                return response()->json($this->errors());
            }
        }

        $data['page'] = 'pages/eventProductDetails/eventProductDetails';//小程序目标页面
        $data['scene'] = "goods_id=".$goods_id."&type=0";//页面需要携带的参数
        if($invite_id){
            $data['scene'] = $data['scene']."&parent_id=".$invite_id;
        }
        $data['width'] = '280';
        $data = json_encode($data);

        $res = $this->curl($this->QRCodeUrl."?access_token=$AccessToken",$data,1,1);//post方式发送请求
		//返回结果是二进制内容。转成base64格式
        if(is_null(json_decode($res))){
            $imgData = $this->data_uri($res,'image/png');
            return response()->json($this->success($imgData));
        }else{
            //没有接收到数据流
            return response()->json($this->errors());
        }
    }

    //请求
    public static function curl($url, $params = false, $ispost = 0, $https = 0){
        $httpInfo = array();
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36');
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        if ($https) {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // 对认证证书来源的检查
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); // 从证书中检查SSL加密算法是否存在
        }
        if ($ispost) {
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
            curl_setopt($ch, CURLOPT_URL, $url);
        } else {
            if ($params) {
                if (is_array($params)) {
                    $params = http_build_query($params);
                }
                curl_setopt($ch, CURLOPT_URL, $url . '?' . $params);
            } else {
                curl_setopt($ch, CURLOPT_URL, $url);
            }
        }
        $response = curl_exec($ch);
        if ($response === FALSE) {
            //echo "cURL Error: " . curl_error($ch);
            return false;
        }
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $httpInfo = array_merge($httpInfo, curl_getinfo($ch));
        curl_close($ch);
        return $response;
    }

    //获取access_token
    public function get_access_token()
    {
        $access_token = $this->getSslPage($this->accesstokenUrl);//get
        if($access_token){
            $access_token = json_decode($access_token)->access_token;
            //存入缓存
            Cache::store('file')->put('access_token', $access_token,119);
            return $access_token;
        } else {
            return false;
        }
    }

    //GET请求
    public function getSslPage($url) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_REFERER, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }

    //二进制转图片image/png
    public function data_uri($contents, $mime)
    {
        $base64   = base64_encode($contents);
        return ('data:' . $mime . ';base64,' . $base64);
    }