php soap example

Question

hi, am using nusoap-0.9.5 and am trying to run the examples given in samples but am getting errors like

Warning: SoapClient::SoapClient() expects at most 2 parameters,
6 given in C:\wamp\www\trvl\nusoap-php5-0.9\samples\client1.php on line 18

Fatal error: Uncaught SoapFault exception: [Client] SoapClient::SoapClient()
[<a href='soapclient.soapclient'>soapclient.soapclient</a>]:
Invalid parameters in C:\wamp\www\trvl\nusoap-php5-0.9\samples\client1.php:18
Stack trace: #0 C:\wamp\www\trvl\nusoap-php5-0.9\samples\client1.php(18):
SoapClient->SoapClient('http://soap.ama...', false, '', '', '', '') #1 {main}
thrown in C:\wamp\www\trvl\nusoap-php5-0.9\samples\client1.php on line 18

could anyone suggest what is the error and how to solve the issue.

Thanks in advance