I have this as xml:
&
Using registerXPathNamespace
and then calling xpath
didn't actually work for me.
I had to go with the solution provided in this great post : http://blog.preinheimer.com/index.php?/archives/172-SimpleXML,-Namespaces-Hair-loss.html
So in your case, this :
echo $xml->children('http://www.webex.com/schemas/2002/06/service/event')->sessionName;
Will output:
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