Add a new Child (from a XML string)

[Utherr12]

I have this piece of code:

	$plugin_tag = $xxml->children();	$xml->addChild($plugin_tag->asXML());

both of $xml and $xxml are retrieved from an URL.The structure of both in my particular case is

xml: <repository></repository>xxml: <repository>   <plugin>		  ... something here...   </plugin></repository>

What I want to do is to insert the plugin child of xxml to the repository parent of xml. The above code doesn't work unfortunately. I also need all the "plugin" elements if repository has more then 1 plugin node child of repository, is it different from my particular case?