<pre>
<?php
ini_set("memory_limit", "1024M");
$login = "***";
$password = "***";

 $soapClientParamsCatalog = array('connection_timeout' => 300);
 $soapClientCatalog = new
SoapClient("https://api.treolan.ru/webservices/treolan.wsdl",
$soapClientParamsCatalog);
 try {
 $paramCatalog = array(
 'Login' => $login,
 'password' => $password,
 'category' => '',
 'vendorid' => 0,
 'keywords' => '',
 'criterion' => 0,
 'inArticul' => 0,
 'inName' => 0,
 'inMark' => 0,
 'ShowNc' => 0);
 $infoCatalog = $soapClientCatalog->__call("GenCatalogV2", $paramCatalog);
 $arResult = ($infoCatalog['Result']);

$xmlCatalog = simplexml_load_string($arResult);
$jsonCatalog  = json_encode($xmlCatalog);
$xmlArrCatalog = json_decode($jsonCatalog, true);

function recarray($ar, $searchfor) {
    static $result = array();

    foreach($ar as $k => $v) {
    if ($k === $searchfor) $result[] = $v;
        if (is_array($ar[$k]))  recarray($v, $searchfor);
    }
    return $result;
}

$result = recarray($xmlArrCatalog, 'articul');

}
catch (SoapFault $fault) {
 print("Sorry, WS returned the following ERROR:
".$fault->faultcode."-".$fault->faultstring);
}

$soapClientParamsProducts = array('connection_timeout' => 300);
$soapClientProducts = new
SoapClient("https://api.treolan.ru/webservice2008/Service.asmx?wsdl",
$soapClientParamsProducts);
try {

    foreach ($result as $i => $articuls) {
        $paramProducts = array(
        'Login' => $login,
        'password' => $password,
        'Articul' => $articuls);
        $infoProducts = $soapClientProducts->__call("ProductInfoV2", array($paramProducts));

        $xmlProducts = simplexml_load_string($infoProducts->ProductInfoV2Result->any);
        $jsonProducts  = json_encode($xmlProducts);
        $xmlArrProducts = json_decode($jsonProducts, true);

        $res[] = $xmlArrProducts;
    }

    print_r($res);

}
catch (SoapFault $fault) {
print("Sorry, WS returned the following ERROR:
".$fault->faultcode."-".$fault->faultstring);
}
?>