PHP:如何处理 <![CDATA[ 与 SimpleXMLElement?

问题描述：

我注意到在包含这些 CDATA 标签的文档上使用 SimpleXMLElement 时，内容总是 NULL.我该如何解决这个问题?

I noticed that when using SimpleXMLElement on a document that contains those CDATA tags, the content is always NULL. How do I fix this?

另外，很抱歉在这里乱发有关 XML 的信息.我一直试图让基于 XML 的脚本工作几个小时......

Also, sorry for spamming about XML here. I have been trying to get an XML based script to work for several hours now...

<content><![CDATA[Hello, world!]]></content>

如果您搜索SimpleXMLElement cdata"，我在 Google 上尝试了第一次点击，但没有成功.

I tried the first hit on Google if you search for "SimpleXMLElement cdata", but that didn't work.

答

您可能没有正确访问它.您可以直接输出它或将其转换为字符串.(在本例中，强制转换是多余的，因为无论如何 echo 都会自动执行)

You're probably not accessing it correctly. You can output it directly or cast it as a string. (in this example, the casting is superfluous, as echo automatically does it anyway)

$content = simplexml_load_string(
    '<content><![CDATA[Hello, world!]]></content>'
);
echo (string) $content;

// or with parent element:

$foo = simplexml_load_string(
    '<foo><content><![CDATA[Hello, world!]]></content></foo>'
);
echo (string) $foo->content;

使用 LIBXML_NOCDATA 可能会更好:

$content = simplexml_load_string(
    '<content><![CDATA[Hello, world!]]></content>'
    , null
    , LIBXML_NOCDATA
);

PHP:如何处理 <![CDATA[ 与 SimpleXMLElement?

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