php RSS 阅读器 - FACESOHO知行者

<?php
// rss 文件
$xml    = "rss_demo.xml";
$xmlDoc = new DOMDocument();
$xmlDoc->load($xml);// 从 "<channel>" 中读取元素
$channel=$xmlDoc->getElementsByTagName('channel')->item(0);
$channel_title = $channel->getElementsByTagName('title')->item(0)->childNodes->item(0)->nodeValue;
$channel_link  = $channel->getElementsByTagName('link')->item(0)->childNodes->item(0)->nodeValue;
$channel_desc  = $channel->getElementsByTagName('description')->item(0)->childNodes->item(0)->nodeValue;// 输出 "<channel>" 中的元素
echo("<p><a href='" . $channel_link. "'>" . $channel_title . "</a>
".$channel_desc . "</p>");// 输出 "<item>" 中的元素
$x=$xmlDoc->getElementsByTagName('item');
for ($i=0; $i<=1; $i++) {
  $item_title=$x->item($i)->getElementsByTagName('title')->item(0)->childNodes->item(0)->nodeValue;
  $item_link=$x->item($i)->getElementsByTagName('link')->item(0)->childNodes->item(0)->nodeValue;
  $item_desc=$x->item($i)->getElementsByTagName('description')->item(0)->childNodes->item(0)->nodeValue;
  echo ("<p><a href='" . $item_link. "'>" . $item_title . "</a>
");
  echo ($item_desc . "</p>");
}
?>