how to return a xml from nusoap - nusoap

Question

I have a webservice created with nusoap, actually returns me a string
i want to do send name and lastname to my web service,my webservice must save this information and give me an id( autoincrement) y it does, but I want something like this
send:
nombrepersona ="ozzy"
apellidopersona="osbourne"
I get the id(autoincrement), example
1
but i want a xml something like
<id>1</id>
or
<id>1</id>
<name>ozzy</name>
<lastname>osbourne</lastname>
or
<response>
<id>1</id>
<name>ozzy</name>
<lastname>osbourne</lastname>
</response>
consume from my webservice
<?php
error_reporting(1);
require_once('lib/nusoap.php');
$client = new nusoap_client("http://localhost/nusoap/server3.php?wsdl",'wsdl');
$nombre="ozzy";
$apellido="osbourne";
$params =array(
'nombrepersona'=>$nombre,
'apellidopersona'=>$apellido);
$result = $client->call('insertar',array($params));
?>
definition from my method
<?php
$server->wsdl->addComplexType(
'Persona',
'complexType',
'struct',
'all',
'',
array(
'nombrepersona' => array('name' => 'nombrepersona', 'type' => 'xsd:string'),
'apellidopersona' => array('name' => 'apellidopersona', 'type' => 'xsd:string')
)
);
$server->wsdl->addComplexType(
'ArrayOfPersona',
'complexType',
'array',
'',
'SOAP-ENC:Array',
array(),
array(
array('ref' => 'SOAP-ENC:arrayType', 'wsdl:arrayType' => 'tns:Persona[]')
),
'tns:Persona'
);
$server->register(
'insertar', // Nombre del método
array('datos' =>'tns:Persona'), // Parámetros de entrada
array('return' => 'xsd:string'), // Parámetros de salida
SOAP_SERVER_NAMESPACE, // Nombre del workspace
SOAP_SERVER_NAMESPACE.'#insertar', // Acción soap
'rpc', // Estilo
'encoded', // Uso
'Insertar datos de la persona' // Documentación
);
?>
function
<?php
function insertar($datos)
{
require_once('conectar.php');
mysql_select_db($database,$conexion);
mysql_query("SET NAMES 'utf8'");
$query="INSERT INTO personas (`nombrep`,`apellidop`) VALUES('".$datos['nombrepersona']."','".$datos['apellidopersona']."')";
$record=mysql_query($query,$conexion) or die ((mysql_error()));
$id=mysql_insert_id();
return $id;
}
?>

Answer 1

solution, definition output must be like this:
array('response'=>'XSD:Array')
and return of function like this:
return array('id'=>$id , etc);