if(isset(_GET['file']))
  {
  if(preg_match("/^http:\/\/static\.flickr\.com\/[0-9]+\/[0-9a-z_]+\.jpg$/",$_GET['file'])) {
      $url\; =$PHProxy->encode_url($\_GET[\text{'}file\text{'}]);$PHProxy->start_transfer($url);\; echo$PHProxy->return_response();
  }
      exit();
  }
  ?>