Jak zrozumieć Allegro (klasy etc)?

Chciałbym np. pobrać sobie funkcje MyBilling()

[PHP] pobierz, plaintext 
 
<?php
header('Content-type: text/html; charset=utf-8');
class AllegroWebAPI {
    protected $_instance;
    protected $_config;
    protected $_session;
    protected $_client;
    protected $_local_version;
    /* Określenie kraju (1 = Polska) */
    const COUNTRY_CODE = '1';
 
    public function __construct() {
        $this->_config = array(
            'allegro_id' => '1',
            'allegro_key' => 'key',
            'allegro_login' => 'login',
            'allegro_password' => (base64_encode(hash('sha256', 'haslo', true)))
        );
        $this->_client = new SoapClient('https://webapi.allegro.pl/uploader.php?wsdl');
    }
 
    public function QuerySysStatus($Component) {
        return $this->_client->doQuerySysStatus(
                        $Component, self::COUNTRY_CODE, $this->_config['allegro_key']
        );
    }
 
    public function LoginEnc() {
        $version = $this->QuerySysStatus(1);
        $this->_local_version = $version['ver-key'];
        //do
        $session = $this->_client->doLoginEnc(
                $this->_config['allegro_login'], $this->_config['allegro_password'], self::COUNTRY_CODE, $this->_config['allegro_key'], $version['ver-key']
        );
        $this->_session = $session;
        unset($this->_config['allegro_password']);
    }
 
 
    public function MyBilling() {
        return $this->_client->doMyBilling(
                        self::COUNTRY_CODE
        );
    }   
 
}
 
try {
	$allegro = new AllegroWebAPI();
	$allegro->LoginEnc();
 
 
 
   echo "<pre>";
  print_r($allegro);
   echo "</pre>";
 
}catch(SoapFault $fault) {
	print($fault->faultstring);
}
 
?>
[PHP] pobierz, plaintext 

wyprintowałem sobie narazie $allegro: co daje nam:

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AllegroWebAPI Object
(
    [_instance:protected] => 
    [_config:protected] => Array
        (
            [allegro_id] => 1
            [allegro_key] => XXXX
            [allegro_login] => XXX
        )
 
    [_session:protected] => Array
        (
            [session-handle-part] => XXX
            [user-id] => XXXX
            [server-time] => XXX
        )
 
    [_client:protected] => SoapClient Object
        (
            [_soap_version] => 1
            [sdl] => Resource id #1
            [httpsocket] => Resource id #2
            [_use_proxy] => 0
            [httpurl] => Resource id #4
            [_cookies] => Array
                (
                    [ws2] => Array
                        (
                            [0] => XXX
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [ws3] => Array
                        (
                            [0] => XXX
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [ws4] => Array
                        (
                            [0] => x
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [QXLSESSID] => Array
                        (
                            [0] => XXX
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [qeppo_login2] => Array
                        (
                            [0] => XXX
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [QXLDATA] => Array
                        (
                            [0] =>XXX
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [qeppo_priv_cookie] => Array
                        (
                            [0] => XXX
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                    [_bS] => Array
                        (
                            [0] => 0
                            [1] => /
                            [2] => .allegro.pl
                        )
 
                )
 
        )
 
    [_local_version:protected] => XXX
)
[XML] pobierz, plaintext 

Dokumentacja Allegro pokazuje (http://allegro.pl/webapi/documentation.php/show/id,109):

[PHP] pobierz, plaintext 
$domybilling_request = array(
   'sessionHandle' => '22eb99326c6be29aa16d07d622bcfbcbee94ad54846f2f4e03_1'
);
[PHP] pobierz, plaintext 

Nie rozumiem, też dlaczego tak jest:

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'sessionHandle' => $allegro->sessionHandlePart
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skoro jeśli printuje sobie $allegro to pokazuje session-handle-part

Zrobienie tak:

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$domybilling_request = array('sessionHandle' => $allegro->session-handle-part);
 echo "<pre>";
print_r($domybilling_request);
 echo "</pre>";  
[PHP] pobierz, plaintext 

daje nam:

[XML] pobierz, plaintext 
 
Array
(
    [sessionHandle] => 0
)
[XML] pobierz, plaintext 

nikt nie pomoże ?

czy powodem tego , że $allegro->session-handle-part daje nam 0 , może być to, że protected $_session; ?