[英]Modify XML via PHP and output xml (almost like a filter a feed)
在PHP中,我必须过滤此rss提要并输出新的rss提要。 阅读提要,查看dc:creator == badcreatorname的位置,然后删除该项目并将提要以相同的顺序放置。
我怎么做? 请帮忙。
<?xml version="1.0"?>
<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel>
<title>LInk.com title</title>
<link>http://link.com</link>
<description>Link.com</description>
<image>
<url>http://www.link.com/media/feedlogo.gif</url>
<title>link.com</title>
<link>http://link.com</link>
</image>
<language>en-us</language>
<copyright>Copyright 2012 </copyright>
<generator>Generator</generator>
<item>
<title><![CDATA[Title goes here]]></title>
<link><![CDATA[http://link.com/]]></link>
<guid isPermaLink="true"><![CDATA[http://link.com/]]></guid>
<description><![CDATA[ Desc]]></description>
<dc:creator><![CDATA[badcreatorname]]></dc:creator>
<pubDate>Mon, 17 Sep 2012 15:16:00 EST</pubDate>
<dc:identifier>898980</dc:identifier>
<category domain="category"><![CDATA[cat]]></category>
<category domain="blogger:name"><![CDATA[cat]]></category>
<enclosure url="pic" length="" type="image/jpeg"/>
</item>
<item>
<title><![CDATA[Title1 goes here]]></title>
<link><![CDATA[http://link1.com/]]></link>
<guid isPermaLink="true"><![CDATA[http://link1.com/]]></guid>
<description><![CDATA[ Desc1]]></description>
<dc:creator><![CDATA[goodcreatorname]]></dc:creator>
<pubDate>Mon, 17 Sep 2012 15:16:00 EST</pubDate>
<dc:identifier>8989801</dc:identifier>
<category domain="category"><![CDATA[cat]]></category>
<category domain="blogger:name"><![CDATA[cat]]></category>
<enclosure url="pic" length="" type="image/jpeg"/>
</item>
</channel>
</rss>
<?php
// Load our XML document
$doc = new DOMDocument();
$doc->load('feed.xml');
// Create an XPath object and register our namespaces so we can
// find the nodes that we want
$xpath = new DOMXPath($doc);
$xpath->registerNamespace('p', 'http://purl.org/dc/elements/1.1/');
// Find the <item> nodes that have a badcreatorname in there
$nodes = $xpath->query("/rss/channel/item[p:creator/text()[ . = 'badcreatorname' ]]");
// Remove the offending nodes from the DOM
for ($i = 0; $i < $nodes->length; $i++) {
$node = $nodes->item($i);
$node->parentNode->removeChild($node);
}
// Write our updated XML back to a new file
$doc->save('feedout.xml');
// Or if you want to send the XML content to stdout:
echo $doc->saveXML();
?>
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