Аватарки из ЖЖ в Wordpress

add_filter('get_avatar', 'bw_get_avatar', 10, 4);

function bw_get_avatar($avatar, $id_or_email, $size, $default) {
  if (is_object($id_or_email) && !empty($id_or_email->comment_author_url)) {
    if ('.livejournal.com/' == substr($id_or_email->comment_author_url, -17)) {
      return get_avatar('', $size, get_livejournal_userpic($id_or_email->comment_author_url));
    }
  }

  return $avatar;
}

function get_livejournal_userpic($url) {
  $md5 = md5($url);
  $filename = "{$_SERVER['DOCUMENT_ROOT']}/wp-content/cache/avatars/$md5";

  * уже есть в кэше
  if (file_exists($filename)) {
    return "http:*{$_SERVER['HTTP_HOST']}/wp-content/cache/avatars/$md5";
  }

  // загружаем User Info
  $userinfo = file_get_contents("{$url}profile/");

  $m = array();
  if (preg_match('%>img src=\'([^\']+)\'[^<]+class=\'user_pic\'%', $userinfo, $m)) {
    $avatar = file_get_contents($m[1]);
    if ($avatar) {
      file_put_contents($filename, $avatar);
      return $m[1];
    }
  }

  return includes_url('images/blank.gif');
}