Creating webservice server and client using NuSOAP

require_once('lib/nusoap.php'); 
 
$server = new nusoap_server;
 
$server->configureWSDL('server', 'urn:server');
 
$server->wsdl->schemaTargetNamespace = 'urn:server';
 
//SOAP complex type return type (an array/struct)
$server->wsdl->addComplexType(
    'Person',
    'complexType',
    'struct',
    'all',
    '',
    array(
        'id_user' => array('name' => 'id_user', 'type' => 'xsd:int'),
        'fullname' => array('name' => 'fullname', 'type' => 'xsd:string'),
        'email' => array('name' => 'email', 'type' => 'xsd:string'),
        'level' => array('name' => 'level', 'type' => 'xsd:int')
    )
);
 
//first simple function
$server->register('hello',
			array('username' => 'xsd:string'),  //parameter
			array('return' => 'xsd:string'),  //output
			'urn:server',   //namespace
			'urn:server#helloServer',  //soapaction
			'rpc', // style
			'encoded', // use
			'Just say hello');  //description
 
//this is the second webservice entry point/function 
$server->register('login',
			array('username' => 'xsd:string', 'password'=>'xsd:string'),  //parameters
			array('return' => 'tns:Person'),  //output
			'urn:server',   //namespace
			'urn:server#loginServer',  //soapaction
			'rpc', // style
			'encoded', // use
			'Check user login');  //description
 
//first function implementation
function hello($username) {
        return 'Howdy, '.$username.'!';
}
 
//second function implementation 
function login($username, $password) {
        //should do some database query here
        // .... ..... ..... .....
        //just some dummy result
        return array(
		'id_user'=>1,
		'fullname'=>'John Reese',
		'email'=>john@reese.com,
		'level'=>99
	);
}
 
$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ? $HTTP_RAW_POST_DATA : '';
 
$server->service($HTTP_RAW_POST_DATA);

require_once('lib/nusoap.php');
 
//This is your webservice server WSDL URL address
$wsdl = "http://localhost/nusoap_test/ws.php?wsdl";
 
//create client object
$client = new nusoap_client($wsdl, 'wsdl');
 
$err = $client->getError();
if ($err) {
	// Display the error
	echo '<h2>Constructor error</h2>' . $err;
	// At this point, you know the call that follows will fail
        exit();
}
 
//calling our first simple entry point
$result1=$client->call('hello', array('username'=>'achmad'));
print_r($result1); 
 
//call second function which return complex type
$result2 = $client->call('login', array('username'=>'john', 'password'=>'doe') );
//$result2 would be an array/struct
print_r($result2);