$access_token = $this->getweAccessToken();

  $url = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token={$access_token}";

  $data = array();

  $data['scene'] = $scene;

  $data['page'] = $page;

  $data['width'] = $width;

  $data['auto_color'] = false;

  $data['line_color'] = array('r'=>"253","g"=>"35","b"=>"70");

  if( !empty($rgb_color) )

  {

    $data['line_color'] = $rgb_color;

  }

  if($is_png)

  {

  $data['is_hyaline'] = true;

  }

  $data_json = json_encode($data);

  $res_code =  $this->http_request($url,$data_json);

      $json_data = json_decode( $res_code, true);