从rss feed获取随机帖子

Question

我有一个由Yahoo Pipes创建的RSS源，我需要从中获取随机帖子。怎么可能在php上实现这个呢？

Answer 1

使用XML Parser阅读Feed并将其放入数组中。然后，使用array_rand从数组中选择一个随机项。

Answer 2

<?
function load_xml_feed($feed)
{
global $RanVal;
$i= 1;
$FeedXml = simplexml_load_file($feed);
foreach ($FeedXml->channel->item as $topic) {
$title[$i] = (string)$topic->title;
$link[$i] = (string)$topic->link;
$description[$i] = (string)$topic->description;
$i++;
}
$randtopic = rand(2, $i);
$link = trim($link[$randtopic]);
$title = trim($title[$randtopic]);
$description = trim($description[$randtopic]);
$RanVal = array($title,$link,$description);
return $RanVal;
}
$rss = "http://www.sabaharabi.com/rss/rss.xml";
load_xml_feed($rss);
$link = $RanVal[1];
$title = $RanVal[0];
$description = $RanVal[2];
echo "<h1>".$title."</h1><h2>".$link."</h2><p>".$description."</p>";