php XMLWriter类的简单示例

<?php
include &#39;mysql.php&#39;;
$mysql = mysql::getObject();
$mysql->query("SELECT * FROM post");
$xml = new XMLWriter();
$xml->openUri(&#39;hello.xml&#39;); //  or &#39;php://output&#39;
$xml->setIndentString(&#39;   &#39;);
$xml->setIndent(true);
// start
$xml->startDocument(&#39;1.0&#39;, &#39;UTF-8&#39;);
// <rss version="2.0">
$xml->startElement(&#39;rss&#39;);
$xml->writeAttribute(&#39;version&#39;, &#39;2.0&#39;);
// <channel>
$xml->startElement(&#39;channel&#39;);
// title
$xml->startElement(&#39;title&#39;);
$xml->text(&#39;title&#39;);
$xml->endElement();
// link
$xml->startElement(&#39;link&#39;);
$xml->text(&#39;http://foodstory.me/post/&#39;);
$xml->endElement();
// description
$xml->startElement(&#39;description&#39;);
$xml->text(&#39;&#39;);
$xml->endElement();
// language
$xml->startElement(&#39;language&#39;);
$xml->text(&#39;zh-cn&#39;);
$xml->endElement();
// category
$xml->startElement(&#39;category&#39;);
$xml->text(&#39;IT&#39;);
$xml->endElement();
// copyright
$xml->startElement(&#39;copyright&#39;);
$xml->text(&#39;copyright 2011 foodstory.me&#39;);
$xml->endElement();
// for item
while ($row = $mysql->fetch()) {
    $xml->startElement(&#39;item&#39;);
    // title
    $xml->startElement(&#39;title&#39;);
    $xml->text($row[&#39;title&#39;]);
    $xml->endElement();
    // link
    $xml->startElement(&#39;link&#39;);
    $xml->text(&#39;http://foodstory.me/post/&#39; . $row[&#39;id&#39;] . &#39;.html&#39;);
    $xml->endElement();
    // description
    $xml->startElement(&#39;description&#39;);
    $xml->text($row[&#39;text&#39;]);
    $xml->endElement();
    // pubDate
    $xml->startElement(&#39;pubDate&#39;);
    $xml->text(date(&#39;D, d M Y H:i:s T&#39;, $row[&#39;time&#39;]));
    $xml->endElement();
    // category tag author need to write .over
    $xml->endElement(); // item
    
}
$xml->endElement(); // channel
$xml->endElement(); // rss
$xml->endDocument();
// $xml->flush();
?>