创建 xml 文件 [英] creating xml file

问题描述

我正在创建如下的 xml 文件，有人可以帮助如何使用 php 获取它吗?

I am creating xml file as below, can anybody help how to get that using php?

xml 文件:

<products>
<product id="123" />
</products>

php 文件:

我正在使用以下代码但没有得到如上的结果

i am using following code but not getting result as above

$xml = new DomDocument('1.0', 'utf-8');
$xml->formatOutput = true;
$products= $xml->createElement('products');
$product = $xml->createElement('product');
$id = $xml->createElement('id');
$xml->appendChild($products);
$products->appendChild($product);
$product->appendChild($id);
$id->nodeValue = 123; 
$xml->save("data.xml");

检索xml数据:

         $xml = new DomDocument();
         $xmlFile = "data.xml";
         $xml= DOMDocument::load($xmlFile);
         $product = $xml->getElementsByTagName("product");             
         foreach($product as $node) 
            { 
        $address = $node->getElementsByAttributeName("address");
        $address = $address->item(0)->nodeValue;
          echo"$address";
            }

推荐答案

您没有得到想要的结果，因为您将 id 添加为标签而不是属性.我只是稍微重构了您的代码并将 id 设为一个属性.我测试了下面的代码，它产生了你想要的结果.

You are not getting the results you want because you're adding id as a tag rather than an attribute. I just refactored your code a little and made id an attribute. I tested the code below and it produces your desired result.

<?php
$xml = new DomDocument('1.0', 'utf-8');
$xml->formatOutput = true;
$products= $xml->createElement('products');
$product = $xml->createElement('product');
$xml->appendChild($products);
$products->appendChild($product);
$product->appendChild(new DomAttr('id', '123'));
$xml->save("data.xml");
?>

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