.
// functions for fetching and displaying RSS feeds
require_once("../inc/cache.inc");
// parse an RSS feed into objects
//
function get_rss_feed($url) {
$x = @simplexml_load_file($url);
if (!$x) return null;
$x = $x->channel;
$items = array();
foreach ($x->item as $item) {
$y = new StdClass;
$y->title = (string)$item->title;
$y->link = (string)$item->link;
$y->description = (string)$item->description;
$y->pubDate = (string)$item->pubDate;
$items[] = $y;
}
return $items;
}
// same, but cache the results; $dur is the refresh period
//
function get_rss_feed_cached($url, $dur) {
$d = get_cached_data($dur, $url);
if ($d) {
return unserialize($d);
}
$items = get_rss_feed($url);
if (!$items) return null;
set_cached_data($dur, serialize($items), $url);
return $items;
}
// Show up to $n items.
// You can pass a function $filter;
// if $filter(item) returns true, don't show it.
//
function show_rss_items($items, $n=0, $filter=null) {
$i = 0;
foreach ($items as $item) {
if ($filter && $filter($item)) {
continue;
}
echo sprintf(
'%s
%s
View article · %s
',
$item->title,
$item->description,
$item->link,
$item->pubDate
);
$i++;
if ($i == $n) {
break;
}
}
}
?>