xml + xpath，打印元素 [英] xml + xpath, print element

问题描述

Notice: Undefined property: DOMNodeList::$id in D:\wamp\www\xml\index.php on line 15
id:

Notice: Undefined property: DOMNodeList::$name in D:\wamp\www\xml\index.php on line 16
name:

<?php
$xml = new DOMDocument();

$xml->load('test.xml');

$xpath = new DOMXPath($xml);

$query = '/people/person[id="33333"]';

$entries = $xpath->query($query);

echo 'id:'. $entries->id.'<br/>';
echo 'name:'.$entries->name.'<br/>';
?>

xml 文件示例:

<people>
...
    <person>
        <phone>33333</phone>
        <name>Aadgar</name>
        <last_name>Adas</last_name>
    </person>
...
</people>

推荐答案

首先，id 节点不存在...

First, the id node doesn't exists...

$query = '/people/person[id="33333"]';

我想你想要:

$query = '/people/person[phone="33333"]';

那么，你必须这样做:

$entries = $xpath->query($query);

foreach ($entries as $entry) {
   echo 'name:'. $entry->getElementsByTagName('name')->item(0)->nodeValue.'<br/>';
   echo 'last_name:'.$entry->getElementsByTagName('last_name')->item(0)->nodeValue.'<br/>';
}

您似乎混淆了 DOM 和 SimpleXML 语法.

It seems you are mixing up DOM and SimpleXML syntax.

这篇关于xml + xpath，打印元素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！