Пошаговое загрузка в API VK.COM фотографий в альбом

class classVkApi {
    
  private $user_id;
  private $access_token;
  private $user_agent;
  
  public function __construct($user_id, $access_token, $imagePath)
  {   
    $this->user_id = $user_id;
    $this->access_token = $access_token;
    $this->user_agent = $_SERVER['HTTP_USER_AGENT'];
    $this->imagePath = $imagePath;
  }
  
  
  public function api($method, $param) {
    $res = $this->curlPost("https://api.vkontakte.ru/method/$method?$param&access_token=$this->access_token", array());
    
    return json_decode($res);
  }
  
  
  public function wallMessage($msg, $url) {
 
 
    if (is_int($msg[0]))
      $msg .= '%20'.$msg;
        
    
    $msg = str_replace(' ', '%20', $msg);
    
    $server = $this->api("wall.post","owner_id=$this->user_id&message=$msg&attachments=$url");
 
    //print_r($server);
    
  }
  
  public function uploadImg($aid, $url, $text) {
 
    $text = str_replace(' ', '%20', $text);
    
    
    $data = array("file1"=>"@".$this->saveImg($url));
    
    $server = $this->api("photos.getUploadServer","aid=$aid");
   
    $res = $this->curlPost($server->response->upload_url, $data);
    $upload = json_decode($res);    
 
    $save = $this->api("photos.save", "caption=$text&aid={$upload->aid}&server={$upload->server}&photos_list={$upload->photos_list}&hash={$upload->hash}");
    
    return $save->response[0]->id;
    
  }
  
  public function saveImg($url) {
    $upload_dir = $this->imagePath;
    $name = 'image.jpg';
    $file = file_get_contents($url);  
    $openedfile = fopen($upload_dir.$name, "w");
    fwrite($openedfile, $file);
    fclose($openedfile);
    
    return $upload_dir.$name;
  }
  
  
  private function curlPost($url, $data=array())
    {
 
        if ( ! isset($url))
        {
            return false;
        }
                                  
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_USERAGENT, $this->user_agent);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_URL, $url);     
 
        if (count($data) > 0)
        {
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        }
 
        $response = curl_exec($ch);
 
        curl_close($ch);
        
        return $response;
    
    }
  
}