PHP & SOAP problem

Hello,
I have a "Hello World" web service written in C# running on a win2003 server.
From a Linux server I have PHP code which tries to execute the web service.
The problem is that when I print the results of the function I get "Object id #2" instead of "Hello World".

But if I inspect the response with _getLastResponse, the Hello World message is inside the XML.
What Am I missing?

Here is the code and the results afterwards.

<?
$client = new SoapClient("http://10.1.11.84/h2wspublic/test.asmx?WSDL",array("trace"=>1));

$returnStr = $client->HelloWorld();
echo "Response #1:" . $returnStr . "\n";
 
$returnStr = $client->__soapCall("HelloWorld",array());
echo "Response #2:" . $returnStr . "\n";

print($client->HelloWorld()."\n");
echo $client->__getLastResponse() . "\n";

echo "-----------------------\n";

$client = new  SoapClient("http://services.xmethods.net/soap/urn:xmethods-delayed-quotes.wsdl" );
print($client->getQuote("ibm")."\n");
?>

Results from the code:

Response #1:Object id #2

Response #2:Object id #3

Object id #2

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><HelloWorldResponse xmlns="http://tempuri.org/"><HelloWorldResult>Hello World my friend marcelo</HelloWorldResult></HelloWorldResponse></soap:Body></soap:Envelope>

-----------------------

80.7

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