php 使用 simpleXML 编辑 XML
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edit XML with simpleXML
提问by Oliver Bayes-Shelton
How can I edit the value's in a xml file using simpleXML ?
如何使用 simpleXML 编辑 xml 文件中的值？
I know how to create the file, but not how to edit the value in an existing file ?
我知道如何创建文件，但不知道如何编辑现有文件中的值？
回答by cletus
Sure you can edit with SimpleXML:
当然您可以使用SimpleXML进行编辑：
$input = <<<END
<?xml version='1.0' standalone='yes'?>
<documents>
<document>
<name>spec.doc</name>
</document>
</documents>
END;
$xml = new SimpleXMLElement($input);
$xml->document[0]->name = 'spec.pdf';
$output = $xml->asXML();
Take a look at the examples.
查看示例。
回答by Jan Han?i?
Load your XML with SimpleXML and make the changes. Then you can use the asXMLmethod to save the XML to a file (you pass the filename as the argument):
使用 SimpleXML 加载您的 XML 并进行更改。然后您可以使用asXML方法将 XML 保存到文件中（您将文件名作为参数传递）：
$xml = new SimpleXMLElement( $xmlString );
// do the manipulation here
$xml->asXML ( '/path/to/your/file.xml' );
回答by ctrygstad
Keep in mind that although you can edit XML with SimpleXML, there are limitations. For example, you can remove or delete a node or element. You can clear it so that its blank, but you can't eliminate it altogether. For that, you need DOM, or something like that.
请记住，虽然您可以使用 SimpleXML 编辑 XML，但仍有一些限制。例如，您可以移除或删除节点或元素。您可以清除它使其空白，但不能完全消除它。为此，您需要 DOM 或类似的东西。
回答by CSepulveda
I am working like this (it's quite the same but it could help): The file test.xml could be any extension as long as it's a plain xml text.
我是这样工作的（完全一样，但它可以提供帮助）：文件 test.xml 可以是任何扩展名，只要它是纯 xml 文本即可。
test.xml:
测试.xml：
<?xml version="1.0" encoding="utf-8"?>
<sitedata>
<Texts>
<ANode SomeAttr="Green" OtherAttr="Small"/>This is the text I'm changing.</ANode>
</Texts>
</sitedata>
And the PHP code:
和 PHP 代码：
$xml=simplexml_load_file("test.xml") or die("Error: Cannot create object");
$SomeVar="<b>Text. This supports html code.</b><br/>I also work with variables, like GET or POST.";
$xml->Texts[0]->{'ANode'}=$SomeVar;
$xml->asXml('test.xml');
Results test.xml:
结果 test.xml：
<?xml version="1.0" encoding="utf-8"?>
<sitedata>
<Texts>
<ANode SomeAttr="Green" OtherAttr="Small"/><b>Text. This supports html code.</b><br/>I also work with variables, like GET or POST.</ANode>
</Texts>
</sitedata>
Hope it helps!
希望能帮助到你！
