/**
 * @param $limit
 * @return string|string[]
 * обрезает контент до числа слов
 */
function content($limit, $pid = null) {
  $content = explode(' ', get_the_content($pid), $limit);
  if (count($content)>=$limit) {
    array_pop($content);
    $content = implode(" ",$content).'...';
  } else {
    $content = implode(" ",$content);
  }
  $content = preg_replace('/[.+]/','', $content);
  $content = apply_filters('the_content', $content);
  $content = str_replace(']]>', ']]>', $content);
  return $content;
}