They are not the same. To get rid of the BOGUS node you need to use this:
$strHeaderComponent_Session = "$theVarWithTheIDGoesHere ";
$objVar_Session_Inside = new SoapVar($strHeaderComponent_Session, XSD_ANYXML,
null, null, null);
$objHeader_Session_Outside = new SoapHeader('http//ws.apache.org/namespaces/axis2',
'SessionHeader', $objVar_Session_Inside);
// More than one header can be provided in this array.
$client->__setSoapHeaders(array($objHeader_Session_Outside));