Stripping Specific HTML & Content from a page with PHP for RSS - php

Question

I am building a mobile version of my company website, and one thing we are in need of is an RSS feed.
I have the RSS pulling in fine with this code:
<?php
$url = 'http://www.someurl.com/rss/articles';
$feed = simplexml_load_file($url, 'SimpleXMLIterator');
$filtered = new LimitIterator($feed->channel->item, 0, 15);
foreach ($filtered as $item) { ?>
<li data-icon="false">
<h2><?php echo $item->title; ?></h2>
<p class="desc"><?php echo $item->description; ?></p>
<br />
<p class="category"><b><?php echo $item->category; ?></b></p>
<a class="link" href="<?php echo $item->link; ?>">Read More</a>
<br />
<p class="pubDate"><?php echo $item->pubDate; ?></p>
<br />
</li>
<?php } ?>
What I would like to do is utilize either the fopen() or file_get_contents() to handle the clicking of the 'Read More' link and strip all of the contents of the incoming page except for the <article> tag.
I have searched Google the past day, and have not been successful in finding any tutorials on this subject.
EDIT:
I would like to load the stripped HTML contents into their own view within my framework.
SECOND EDIT:
I would just like to share how I solved this problem.
I modified my $item->link; to be passed through the URL as a variable:
Read More
On the article.php page, I collect the variable with a if() statement:
if (isset($_GET['rss_url']) && is_string($_GET['rss_url'])) {
$url = $_GET['rss_url'];
}
Then building on the suggestions of the comments below, I built a way to then collect the incoming URL and strip the necessary tags to then format for my mobile view:
<div id="article">
<?php
$link = file_get_contents($url);
$article = strip_tags($link, '<title><div><article><aside><footer><ul><li><img><h1><h2><span><p><a><blockquote><script>');
echo $article;
?>
</div>
Hopefully this helps anyone else who may encounter this problem :)

Answer 1

I'm not sure if I understand it correctly but are you trying to output the contents on the current page whenever someone clicks the more link?
I would probably use Javascipt to do that, maybe jQuery's .load() function which loads html from another page and allows you to load only specific fragments of a page.. but if you need to use php I would look into Simple HTML DOM Parser
$html = file_get_html($yourUrl);
$article = $html->find('article', 0); // Assuming you only have 1 article/page
echo $article;

Answer 2

The only way I can see is to set up your own separate script to route the links through.
So, instead of echo $item->link use
echo 'LinkProcessor.php?link='.$item->link
Then, setup a script called LinkProcessor.php and use file_get_contents on that page. You can then process the XML to only show the article tag and echo the results:
$article = file_get_contents($_GET['link']);
$xml = new SimpleXMLElement($article);
$articleXml = $xml->xpath('//article');
echo articleXml[0];
Note that the code is untested, but it should be OK.