如何使用php脚本解析xml文件[重复]

Question

这是可能的xml文件

<?xml version="1.0" encoding="utf-8"?>
<rss xmlns:g="http://base.google.com/ns/1.0" version="2.0">
<channel>
<title>werwer</title>
<link>werwerwe</link>

<item>
<g:id>704667</g:id>
<title>Nike</title>
<description>erterterter</description>
</item>

<item>
<g:id>4456456</g:id>
<title>Nike</title>
<description>erterterter</description>
</item>

</channel></rss>

如何解析那个 xml 文件，我有脚本但是它不起作用

if (file_exists('products.xml')) {
    $xml = simplexml_load_file('products.xml');

    print_r($xml);
} else {
    exit('Failed to open products.xml.');
}

知道如何在 g:id 之间获取信息吗？

Answer 1

您需要将命名空间应用到孩子。 http://php.net/manual/en/simplexmlelement.getnamespaces.php

<?php
$xml = '<?xml version="1.0" encoding="utf-8"?>
<rss xmlns:g="http://base.google.com/ns/1.0" version="2.0">
    <channel>
        <title>werwer</title>
        <link>werwerwe</link>

        <item>
            <g:id>704667</g:id>
            <title>Nike</title>
            <description>erterterter</description>
        </item>

        <item>
            <g:id>4456456</g:id>
            <title>Nike</title>
            <description>erterterter</description>
        </item>

    </channel>
</rss>';

$xml = simplexml_load_string($xml);
$ns = $xml->getNamespaces(true);

foreach ($xml->channel->item as $item) {
    echo $item->children($ns['g'])->id.PHP_EOL;
}
/*
704667
4456456
*/

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