function file_get_contents_curl($url) {
   $ch = curl_init();
   
   curl_setopt ($ch,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1');
   curl_setopt($ch, CURLOPT_HEADER, 0);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //Set curl to return the data instead of printing it to the browser.
   curl_setopt($ch, CURLOPT_URL, $url);
   
   $data = curl_exec($ch);
   curl_close($ch);
   
   return $data;
}
// грузим фото вк
$upurl =  'https://api.vk.com/method/photos.getMessagesUploadServer?access_token='.$token;
  $upl = file_get_contents_curl($upurl); // Отправляем запрос
  $uplj = json_decode($upl); // Преобразуем JSON-строку в массив
  $VKuploadUrl = $uplj->response->upload_url;
if (!empty($VKuploadUrl)) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $VKuploadUrl);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array('photo' => '@'.$SERVER['document_root'].$imggr));
 
$otvet = curl_exec($ch);
 
curl_close($ch);
 }