replaceing value of CDATA node

[remmy]

Hello,

I have an XML file where several nodes are created as CDATA sections.

$catPubName = $doc->createElement("catPubName");
$catPubName->appendChild($doc->createCDATASection($publ));
$baseCat->appendChild($catPubName);

XML is correct:
<catPubName><![CDATA[Ounad.prew]]></catPubName>

Now, when I insert new values to them via HTML form and PHP

$cPub=$cat->getElementsByTagName("catPubName");
$cPub->item(0)->nodeValue=$pubName;

the node data is not CDATA any more:

<catPubName>Neeruti.prew</catPubName>

Is there a way to keep the CDATA while changing the value? Or should I remove the node and create it anew?

Thanks in advance for any clues:-)

[NogDog]

Could you not do the following?

$cPub->item(0)->nodeValue = $doc->createCDATASection($pubName);

[remmy]

Nope, unfortunately this gives an error:

"...Object of class DOMCdataSection could not be converted to string in..."