Nusoap does not work within function call

Nusoap does not work within function call

PHP : Version 5
Nusoap : Version 1.94

Dear All,

I get followiing error when I perform soap calls within function :

“[B]soap:ServerServer was unable to process request. —> Object reference not set to an instance of an object.”[/B]

Here is the function :

[code=php]
function getdownloadurl()
{
$soapaction=”[URL]https://secure.webaddress.com/V7/webservices/GetDownloadUrl[/URL]”;
$wsdl=”[URL]https://secure.webaddress.com/v3/WebServices/Update1.asmx[/URL]”;

$client=new soapclient($wsdl);

$newcrop=new newCrop();
$newcrop->provofficeCode=$officeid;

$recentdownload=$newcrop->GetDownloadUrl(‘3’);

$response=$client->send($client->serializeEnvelope($recentdownload, ”, array(), ‘document’, ‘literal’),$soapaction,$timeout,$response_timeout);
$newcropResponseXML=$client->response;
}
[/code]

Does any one know why error occurs? Any help would be greatly appreciated.

Thank You,
Santhosh

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