Error on create a product from php webservice

[Paulo Binatto]

Hi, i'm a brazilian, my english isn't good, but i need help to create a product from webservice php. I try but the response is a error.

<?xml version="1.0" encoding="UTF-8"?>
<prestashop xmlns:xlink="http://www.w3.org/1999/xlink">
<errors>
<error>
<code><![CDATA[3]]></code>
<message><![CDATA[[PHP Warning #2] Invalid argument supplied for foreach() (/home/vipsyste/public_html/prestashop.vipsystem.com.br/classes/Product.php, line 6054)]]></message>
</error>
</errors>
</prestashop>

XML send

<?xml version="1.0" encoding="UTF-8"?>
<prestashop xmlns:xlink="http://www.w3.org/1999/xlink">
<product>
	<id/>
	<id_manufacturer/>
	<id_supplier/>
	<id_category_default>32</id_category_default>
	<new/>
	<cache_default_attribute/>
	<id_default_image/>
	<id_default_combination/>
	<id_tax_rules_group/>
	
	<type/>
	<id_shop_default/>
	<reference/>
	<supplier_reference/>
	<location/>
	<width/>
	<height/>
	<depth/>
	<weight/>
	<quantity_discount/>
	<ean13/>
	<upc/>
	<cache_is_pack/>
	<cache_has_attachments/>
	<is_virtual/>
	<on_sale/>
	<online_only/>
	<ecotax/>
	<minimal_quantity/>
	<price>1000</price>
	<wholesale_price/>
	<unity/>
	<unit_price_ratio/>
	<additional_shipping_cost/>
	<customizable/>
	<text_fields/>
	<uploadable_files/>
	<active>1</active>
	<redirect_type/>
	<id_product_redirected/>
	<available_for_order/>
	<available_date/>
	<condition/>
	<show_price/>
	<indexed/>
	<visibility/>
	<advanced_stock_management/>
	<date_add/>
	<date_upd/>
	<pack_stock_type/>
	<meta_description><language id="3"/></meta_description>
	<meta_keywords><language id="3"/></meta_keywords>
	<meta_title><language id="3"/></meta_title>
	<link_rewrite>nome</link_rewrite>
	<name>nome</name>
	<description>descricao</description>
	<description_short>descricao pequena</description_short>
	<available_now><language id="3"/></available_now>
	<available_later><language id="3"/></available_later>
<associations>
<categories>
	<category>
	<id/>
	</category>
</categories>
<images>
	<image>
	<id/>
	</image>
</images>
<combinations>
	<combination>
	<id/>
	</combination>
</combinations>
<product_option_values>
	<product_option_value>
	<id/>
	</product_option_value>
</product_option_values>
<product_features>
	<product_feature>
	<id/>
	<id_feature_value/>
	</product_feature>
</product_features>
<tags>
	<tag>
	<id/>
	</tag>
</tags>
<stock_availables>
	<stock_available>
	<id/>
	<id_product_attribute/>
	</stock_available>
</stock_availables>
<accessories>
	<product>
	<id/>
	</product>
</accessories>
<product_bundle>
	<product>
	<id/>
	<quantity/>
	</product>
</product_bundle>
</associations>
</product>
</prestashop>

PHP critéria

$webService = new PrestaShopWebservice(PS_SHOP_PATH, PS_WS_AUTH_KEY, DEBUG);
    $xml = $webService->get(array('url' => PS_SHOP_PATH . '/api/products?schema=blank'));
    $resources = $xml->children()->children();

    unset($resources->position_in_category);
    unset($resources->manufacturer_name);
    unset($resources->quantity);

    unset($resources->position_in_category);
    unset($resources->manufacturer_name);

    $resources->price = '1000';
    $resources->active = '1';
    $resources->link_rewrite = 'nome';
    $resources->name = 'nome';
    $resources->description = 'descricao';
    $resources->description_short = 'descricao pequena';
    $resources->id_category_default = '32';

    $opt = array('resource' => 'products');
    $opt['postXml'] = $xml->asXML();
    $xml = $webService->add($opt);

Thank's for help me

[BGUEVARA]

Saludos, amigo, yo tengo el mismo error, pudiste corregirlo.? Gracias