Use an open source PHP class to fetch articles from RSS, ATOM and OPML feeds

find-feeds.php

<?php
/** 
* Retrieve and parse OPML (Outline Processor Markup Language) Parser Class. 
* Extracts the properties of content from OPML files using a PHP class
*
* @link https://github.com/imelgrat/opml-parser
*
* @link https://imelgrat.me/php/find-atom-opml-rss-feeds/
*/
require_once('opml-parser.php');
use imelgrat\OPML_Parser\OPML_Parser;

$parser = new OPML_Parser();

// Get OPML from URL
$parser->ParseLocation('http://www.bbc.co.uk/podcasts.opml', null);

// Walk through each item in the same way as we would if $parser were a string (thanks to the Iterator interface)
foreach ($parser as $key => $item)
{
	echo "<p> Item: " . $key . '</p><ul>';
	foreach ($item as $attribute => $value)
	{
		echo '<li>' . '<strong>' . $attribute . '</strong>:' . $value . '</li>';
	}
	echo '</ul>';
	echo '<p>&nbsp;</p>';

}
?>