SimplePie::set_autodiscovery_cache_duration PHP Method

    public function set_autodiscovery_cache_duration($seconds = 604800)
    {
        $this->autodiscovery_cache_duration = (int) $seconds;
    }

 public function execute()
 {
     parent::execute();
     if ($this->action == 'NewsreaderCache') {
         $urls = preg_split('/\\r?\\n/', SPNRBOX_FEEDS);
         $cache_location = WBB_DIR . 'lib/data/boxes/SimplePieNewsReader/cache';
         // CHARSET
         if (!defined('CHARSET')) {
             define('CHARSET', 'UTF-8');
         }
         if (!defined('SPNRBOX_CHARSET')) {
             define('SPNRBOX_CHARSET', 'UTF-8');
         }
         if (SPNRBOX_CHARSET == 'default') {
             $charset = CHARSET;
         } else {
             $charset = SPNRBOX_CHARSET;
         }
         // FILTER?
         if (SPNRBOX_FILTER && strlen(SPNRBOX_FILTERWORDS) >= 3) {
             require_once WBB_DIR . 'lib/data/boxes/SimplePieNewsReader/simplepie_filter.php';
             $feed = new SimplePie_Filter();
             if (!defined('SPNRBOX_FILTERCLASS')) {
                 define('SPNRBOX_FILTERCLASS', 'hightlight');
             }
             define('SPNRBOX_FILTERON', 1);
         } else {
             $feed = new SimplePie();
             define('SPNRBOX_FILTERON', 0);
         }
         $feed->set_feed_url($urls);
         $feed->set_cache_location($cache_location);
         $feed->set_autodiscovery_cache_duration(0);
         $feed->set_cache_duration(0);
         $feed->set_favicon_handler(RELATIVE_WBB_DIR . 'lib/data/boxes/SimplePieNewsReader/handler_image.php');
         $feed->set_image_handler(RELATIVE_WBB_DIR . 'lib/data/boxes/SimplePieNewsReader/handler_image.php');
         $feed->set_output_encoding($charset);
         $feed->set_timeout(10);
         $feed->init();
         $feed->handle_content_type();
         if (SPNRBOX_FILTERON) {
             $feed->set_filter(SPNRBOX_FILTERWORDS, SPNRBOX_FILTERMODE);
         }
         header("Content-type: text/plain; charset=UTF-8");
         foreach ($urls as $feeds) {
             $feeds = trim($feeds);
             if (empty($feeds)) {
                 continue;
             }
             $feed->set_feed_url($feeds);
             $feed->init();
             $items = $feed->get_items();
             if (SPNRBOX_FILTERON) {
                 $items = $feed->filter($items);
             }
             echo $feed->get_title() . "\n";
             if (!count($items)) {
                 echo "\tKeine Feeds gefunden.\n";
             } else {
                 $i = 0;
                 foreach ($items as $item) {
                     if ($i >= SPNRBOX_NUMOFFEEDS) {
                         break;
                     }
                     SPNRBOX_FILTERON ? $this->highlight(SPNRBOX_FILTERWORDS, $item->get_content(), SPNRBOX_FILTERCLASS) : $item->get_content();
                     echo "\t\"" . $item->get_title() . "\" -> wurde geladen.\n";
                     $i++;
                 }
             }
         }
     }
 }