set_feed_url()

class SimplePie {
	set_feed_url ( mixed $feed_url )
}

This sets the URL (or an array of URLs) that you want to parse. If there is not a feed at this location, auto-discovery is used unless it is disabled.

There are differences between handling a single feed and merging feeds together with Multifeeds. Read Typical Multifeed Gotchas for notes on common issues.

• Available since SimplePie 1.0.
• Previously existed as feed_url() since SimplePie Preview Release.

Set the feed URL(s).

$feed = new SimplePie();
$feed->set_feed_url('http://simplepie.org/blog/feed/');
$feed->init();
$feed->handle_content_type();
echo $feed->get_title();

$feed = new SimplePie();
$feed->set_feed_url(array(
	'http://newsrss.bbc.co.uk/rss/newsonline_world_edition/front_page/rss.xml',
	'http://rss.news.yahoo.com/rss/topstories',
	'http://news.google.com/?output=atom',
	'http://rss.slashdot.org/Slashdot/slashdot',
	'http://rss.cnn.com/rss/cnn_topstories.rss',
	'http://www.newsvine.com/_feeds/rss2/index'
));
$feed->init();
$feed->handle_content_type();
echo $feed->get_title();

There is also an alternate syntax discussed in SimplePie.