Nevypisuje se exif

$exif = exif_read_data("obrazek.jpg", 0, true);

$encoding = $exif["COMPUTED"]["UserCommentEncoding"];
$comment = $exif["EXIF"]["UserComment"];
$comment = substr($comment, strlen($encoding));

if($encoding == "ASCII") {
  $comment = mb_convert_encoding($comment, "UTF-8", $encoding);
}
echo $comment;

$exif = exif_read_data("obrazek.jpg", 0, true);
echo $exif["COMPUTED"]["UserCommentEncoding"];