Visual Basic.NET - Matriz en Web Service desde PHP

require_once('lib/nusoap.php');

// Create server object 

$server = new soap_server();

// configure WSDL

$server->configureWSDL('PHP Web Services return array', 'urn:returnArray'); //- See more at: http://my-source-codes.blogspot.com.ar/2011/10/php-web-service-return-array.html#sthash.YIxlfr8x.dpuf

// Complex Type Struct for return array

$server->wsdl->addComplexType('array_php',

'complexType',

'struct',

'all',

 '',

    array(

    'id' => array('id' => 'id', 'type' => 'xsd:string'),

    'firstname' => array('name' => 'firstname', 'type' => 'xsd:string'), 

    'lastname' => array('name' => 'lastname', 'type' => 'xsd:string'), 

    'email' => array('name' => 'email', 'type' => 'xsd:string') 

    )

    );

    $server->wsdl->addComplexType('return_array_php', 

    'complexType', 

    'array', 

    'all',

    'SOAP-ENC:Array', 

    array(),

    array(

    array('ref'=>'SOAP-ENC:arrayType','wsdl:arrayType'=>'tns:array_php[]') 

    ),

    'tns:array_php' ); 

    $server->register('get_data', 

    array('limit_start' => 'xsd:int','limit_end' => 'xsd:int'), 

    array('return' => 'tns:return_array_php'), 

    $ns,

    $ns.'#get_data',

     'rpc', 

     'encoded', 

     'Returns array data in php web service' 

     );

     function get_data($limit_start,$limit_end)

     { /* you can use mysql and your logic here this is sample array */

     $array_rtr=array();

     $array_rtr[0]['id']=0; 

     $array_rtr[0]['firstname']='Nikunj'; 

     $array_rtr[0]['lastname']='Gandhi'; 

     $array_rtr[0]['email']='Nik_gandhi007@yahoo.com'; 

     $array_rtr[1]['id']=1; 

     $array_rtr[1]['firstname']='ABC'; 

     $array_rtr[1]['lastname']='EGF'; 

     $array_rtr[1]['email']='ABC@yahoo.com'; 

     $array_rtr[2]['id']=2; 

     $array_rtr[2]['firstname']='XYZ'; 

     $array_rtr[2]['lastname']='ZYX'; 

     $array_rtr[2]['email']='XYZ@yahoo.com'; 

     $array_rtr[3]['id']=3; 

     $array_rtr[3]['firstname']='zcds'; 

     $array_rtr[3]['lastname']='asdsa'; 

     $array_rtr[3]['email']='dxds@yahoo.com';

 $return=array();

    for($i=$limit_start;$i<=$limit_end;$i++){

        $return[$i]=$array_rtr[$i];

        }

    return $return;

    }

    $server->service($HTTP_RAW_POST_DATA);