How do I get an atom enclosure image out using Simple Pie

I am building an RSS aggregator and trying to handle images from a broad range of sources.

The majority of my sources are using images in the content or media:RSS enclosures.

I have managed to get Simple Pie to pick up enclosures for media:RSS

and also to strip images from the content of an RSS post.

But feeds from a CMS called Silver Stripe have an embedded image in each post with an atom style

notation that I cannot get Simple Pie to read and extract images from.

<link rel="enclosure" type="image/JPG" href="http://example.com/image.jpg" />

Do I need to modify the enclosure class to get this to work or am I missing something, is it

something to do with the namespaces I am using?

Here is one of the feeds I am trying to get

I am accessing about 7 other different SilverStipe sites, all of these include the same image links...

Here is my current image script:

if ($enclosures = $prPost->get_enclosures())
    {
        foreach ($enclosures as $enclosure)
        {
            $this->Fields['image'] = $enclosure->get_link();
        }
    }

    if (preg_match('/<img.+?src="(.+?)"/', $this->Fields['desc'], $matches) && strlen($this->Fields['image']) < 5) {
        $this->Fields['image'] = $matches[1];
        $this->Fields['desc'] = preg_replace('/<img(.*)>/i' , "" , $this->Fields['desc'], 1); 
    }

Solution

These link elements are children of the item elements:

<rss>
  <channel>
    ...
    <item>
      ...
      <description>...</description>
      <link rel="enclosure" ... />

You can use get_item_tags to get specific elements from an item.

They should be in the Atom namespace (<atom:link>), but are instead left in the default namespace (<link>), which is a bug in the feed. but one you'll need to work around:

$links = $item->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link');