access ID/GUID Attribute isPermaLink

Question

I use SimplePie to parse RSS feeds in php. For pre-processing the result of SimplePie, I need to know if the the link is a permalink or not. The info is stored in this XML element:

<guid isPermaLink="false">FileNr123</guid>

If $items is an instance of SimplePie objet that stands for one RSS feed item, I can use $item->get_permalink to get the permalink. Unfortunately this returns the fileName/guid, even if isPermaLink="false"

So how can I access the isPermaLink attribute of every feed item to post-process the SimplePie output?

Answer 1

On option is to use the get_item_tags method in order to walk trough the array and search for the first isPermaLink:

$guid = $item->get_item_tags('','guid');
$arrIt = new RecursiveIteratorIterator(new RecursiveArrayIterator($guid[0]));
foreach ($arrIt as $sub) {
   $subArray = $arrIt->getSubIterator();
   if (isset($subArray['isPermaLink']) && $subArray['isPermaLink'] == "false") 
       {$isPermalink = false ;break;}
}

This works, but it's not satisfying, bacause some RSS provider sets isPermaLink to false even the link works correctly for a long time.