[英]Amend node value in existing XML document and print result with DOM PHP
I am looking for the best method to replace a node value using DOM in PHP.我正在寻找在 PHP 中使用 DOM 替换节点值的最佳方法。
An example XML would be, which is stored as data.xml :一个示例 XML 将是,它存储为data.xml :
<?xml version="1.0" encoding="UTF-8"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
I have been following https://www.w3schools.com/php/php_xml_dom.asp , which works great to print out the XML file without any edits using the following code:我一直在关注https://www.w3schools.com/php/php_xml_dom.asp ,它可以很好地打印出 XML 文件,无需使用以下代码进行任何编辑:
<?php
$xmlDoc = new DOMDocument();
$xmlDoc->load("data.xml");
print $xmlDoc->saveXML();
?>
Now I'm not sure how to go about editing the values of, for example, change Jani to Smith and print the new changed xmlDoc.现在我不确定如何编辑 go 的值,例如将Jani更改为Smith并打印新更改的 xmlDoc。
Try:尝试:
$xpath = new DOMXPath($xmlDoc);
$from = $xpath->query('/note//from')[0];
$from->nodeValue="John";
echo $xmlDoc->saveXML();
Output: Output:
<?xml version="1.0" encoding="UTF-8"?>
<note>
<to>Tove</to>
<from>John</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
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