php - xml + xpath，打印元素

Question

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>

Answer 1

首先，id节点不存在...

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

我想你要：

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

然后，您必须执行以下操作：

$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/>';
}

看来您正在混淆 DOM和 SimpleXML语法。