getToken XML WS 2.1

require 'lib/WS.php';

$_ws = new WS();

$_ws->username = 'USERNAME';
$_ws->password = 'PASSWORD';

//get token
$data = [
   'act' => 'GetToken',
   'username' => $_ws->username,
   'password' => $_ws->password
];
$_result = $_ws->execute($data, 'xml');
$_test = simplexml_load_string($_result);
$_token = (string)$_test->data->token;

//get PT
$_pt = [
    'act' => 'GetProfilPT',
    'token' => $_token,
    'filter' => '',
    'order' => '',
    'limit' => '',
    'offset' => ''
];
$_result_pt = $_ws->execute($_pt, 'xml');
$_test_pt = simplexml_load_string($_result_pt);

echo "<pre>";
print_r($_test_pt);
echo "</pre>";