PHP include triggers HTTP cascade

I don't know why I've seen people in the habit of manually capturing an external PHP output rather than just putting the PHP code in the hook:

1.) Adapt and add the following code to Hook: parse_templates

PHP Code:

require_once('SimplePie/simplepie.inc');
$feed = new SimplePie();
$feed->set_feed_url('https://vborg.vbsupport.ru/external.php?type=RSS2');
$feed->init();

$feed->handle_content_type();

$feed_html = '';

foreach($feed->get_items() AS $item)
{
   $feed_html .= '<p><a href="' . $item->get_permalink() .'">' . $item->get_title() . '</a></p>';

} 


2.) Place variable $feed_html into the footer variable where you wish.

and voila! None of this nasty ob_start() and ob_end() stuff, it's unnecessary!

Adapt the code to your liking, I even used SimplePie for you. You'll want to edit the include director, the feed url, and probably make the formatting of $feed_html a little nicer.