I'm thinking you have error

Correct version of this function:

function image_advance_resize(stdClass $image, $width, $height) {
  $w = $dst_w = $width;
  $h = $dst_h = $height;
  $src_x = $dst_x = 0;
  $src_y = $dst_y = 0;
  $src_w = $image->info['width'];
  $src_h = $image->info['height'];
  $src_image = $image->resource;
  if ($w > $src_w) {
    $dst_w = $src_w;
    $dst_x = ($w - $src_w) / 2;
  }
  if ($h > $src_h) {
    $dst_h = $src_h;
    $dst_y = ($h - $src_h) / 2;
  }
  $dst_image = imagecreatetruecolor($w, $h);
  $backgroundColor = imagecolorallocate($dst_image, 255, 255, 255);
  imagefill($dst_image, 0, 0, $backgroundColor);
  imagecopyresampled($dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
  imagedestroy($src_image);
  $image->resource = $dst_image;
  $image->info['width'] = $w;
  $image->info['height'] = $h;
  return TRUE;
}