PHP：如何处理<！[CDATA [使用SimpleXMLElement？

Question

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

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>

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

Answer 1

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;

---

You might have better luck with LIBXML_NOCDATA:

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