function getPostsFromExternalSource($user, $count)
{
  $params = "user=$user&count=$count";
  $curl = curl_init("http://localhost/zew_serwis/api.php?$params");
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  $data = curl_exec($curl);
  curl_close($curl);
  $data = json_decode($data);
  
  $result = array();
  if($data && isset($data->status) && ($data->status > 0) && 
     isset($data->dane) && is_array($data->dane)){
    foreach($data->dane as $p){
      if(!isset($p->autor) || !isset($p->data) || !isset($p->tresc)){
        continue;
      }
      $result[] = array(
        'autor' => $p->autor,
        'tresc' => $p->tresc,
        'data' => $p->data
      );
      if(--$count <= 0) break;
    }
  }
  return $result;
}