PHP：XML解析问题

发布于 2024-10-04 19:41:21 字数 376 浏览 1 评论 0原文

我正在使用 SimpleXML 来解析 XMl 文档。我需要能够读取/更新节点属性。

在这个 XML 文档中，

<root>
  <node>ABC</node>
  <key>123</key>
  <node2>
     <key>456</key>
  </node2>
  <key>789</key>
</root>

我如何读取/更新所有关键节点？该文档没有特定的结构，因此我需要能够在不知道它们的位置的情况下找到它们。假设我想将关键节点中的数字乘以 2。我该怎么做呢？

谢了。

原文

I'm using SimpleXML for parsing XMl documents.
I need to be able to read/update node attributes.

In this XML document

<root>
  <node>ABC</node>
  <key>123</key>
  <node2>
     <key>456</key>
  </node2>
  <key>789</key>
</root>

How can I read/update all key nodes? the document doesn't have a specific structure, so I need to be able to find them without knowing their position. Let's say I want to multiply by 2 the numbers in the key nodes. How can I do it?

Tks.

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囚你心 2024-10-11 19:41:21

我发现这个问题非常懒惰，但无论如何，

$sxe = new SimpleXmlElement($xml);
foreach($sxe->xpath('//key') as $key) $key[0] *= 2;
echo $sxe->asXML();

Stack Overflow 上有很多有关 SimpleXml 的问题。请在提出问题之前搜索它们。 PHP 手册还提供了涵盖基本用法的示例。

I find the question extremely lazy, but anyway

$sxe = new SimpleXmlElement($xml);
foreach($sxe->xpath('//key') as $key) $key[0] *= 2;
echo $sxe->asXML();

There is plenty of questions about SimpleXml on Stack Overflow. Please search for them before asking your question. The PHP Manual also has examples covering Basic Usage.

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瀟灑尐姊 2024-10-11 19:41:21

<?php

$xml = '<root>
  <node>ABC</node>
  <key>123</key>
  <node2>
     <key>456</key>
  </node2>
  <key>789</key>
</root>';

$dom = new DOMDocument();
$dom->loadXml($xml);

$xpath = new DOMXPath($dom);
foreach ($xpath->query('//text()') as $node)
{
 $newNode = $dom->createDocumentFragment();
 $newNode->appendXML($node->wholeText . ' replaced');
 $node->parentNode->replaceChild($newNode, $node);
}

echo $dom->saveXML();

<?php

$xml = '<root>
  <node>ABC</node>
  <key>123</key>
  <node2>
     <key>456</key>
  </node2>
  <key>789</key>
</root>';

$dom = new DOMDocument();
$dom->loadXml($xml);

$xpath = new DOMXPath($dom);
foreach ($xpath->query('//text()') as $node)
{
 $newNode = $dom->createDocumentFragment();
 $newNode->appendXML($node->wholeText . ' replaced');
 $node->parentNode->replaceChild($newNode, $node);
}

echo $dom->saveXML();

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终难愈 2024-10-11 19:41:21

最简单的 API 是 QueryPath（或 phpQuery）：

$qp = qp($xml);

foreach ($qp->find("key") as $key) {
     //@todo: add verification that it's indeed numeric text
     $key->text(  $key->text() * 2  );
}

但使用“SimpleXML”也可以实现类似的功能

The simplest possible API is QueryPath (or phpQuery):

$qp = qp($xml);

foreach ($qp->find("key") as $key) {
     //@todo: add verification that it's indeed numeric text
     $key->text(  $key->text() * 2  );
}

But something similar is possible with "SimpleXML"

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