How to Access CDATA Content with SimpleXMLElement in PHP?

Handling <![CDATA[ with SimpleXMLElement in PHP

When working with XML documents containing CDATA tags using SimpleXMLElement, accessing their content can sometimes result in a NULL value. Here's how to resolve this issue:

Accessing CDATA Content

To access the content of CDATA tags correctly, you can either echo the SimpleXMLElement object directly or cast it to a string.

$content = simplexml_load_string(
    '<content><![CDATA[Hello, world!]]></content>'
);
echo (string) $content; // Output: Hello, world!<p><strong>Using LIBXML_NOCDATA</strong></p>
<p>Alternatively, you can use the LIBXML_NOCDATA flag when creating the SimpleXMLElement object to suppress the removal of CDATA tags.</p>
<pre class="brush:php;toolbar:false">$content = simplexml_load_string(
    '&lt;content&gt;&lt;![CDATA[Hello, world!]]&gt;&lt;/content&gt;'
    , null
    , LIBXML_NOCDATA
);
echo (string) $content; // Output: &lt;![CDATA[Hello, world!]]&gt;

Example with Parent Element

If the CDATA tag is inside a parent element, you can access it using the -> operator.

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

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