SimplePie::strip_attributes PHP Метод

    public function strip_attributes($attribs = '')
    {
        if ($attribs === '') {
            $attribs = $this->strip_attributes;
        }
        $this->sanitize->strip_attributes($attribs);
    }

 /**
  * _displayRSS
  * 
  * @param string $url
  * @param int $num_items
  */
 protected function _displayRSS($url, $num_items = -1)
 {
     $rss = new SimplePie();
     $rss->strip_htmltags(array_diff($rss->strip_htmltags, array('style')));
     $rss->strip_attributes(array_diff($rss->strip_attributes, array('style', 'class', 'id')));
     $rss->set_feed_url($url);
     $rss->set_cache_class('WP_Feed_Cache');
     $rss->set_file_class('WP_SimplePie_File');
     $rss->set_cache_duration(apply_filters('wp_feed_cache_transient_lifetime', 43200, $url));
     do_action_ref_array('wp_feed_options', array(&$rss, $url));
     $rss->init();
     $rss->handle_content_type();
     if (!$rss->error()) {
         $maxitems = $rss->get_item_quantity(25);
         $rss_items = $rss->get_items(0, $maxitems);
         echo '<ul>';
         if ($num_items !== -1) {
             $rss_items = array_slice($rss_items, 0, $num_items);
         }
         if ($rss_items) {
             foreach ((array) $rss_items as $item) {
                 printf('<li><div class="date">%4$s</div><div class="thethefly-news-item">%2$s</div></li>', esc_url($item->get_permalink()), $item->get_description(), esc_html($item->get_title()), $item->get_date('D, d M Y'));
             }
         } else {
             echo "<li>";
             _e('Unfortunately the news channel is temporarily closed', 'thethe-captcha');
             echo "</li>";
         }
         echo '</ul>';
     } else {
         _e('An error has occurred, which probably means the feed is down. Try again later.', 'thethe-captcha');
     }
 }