<PixiGetOrderTotalsPost200TextXmlResponse>
  <OrderNr>0</OrderNr>
  <EanUpc>string</EanUpc>
  <ItemNrSuppl>string</ItemNrSuppl>
  <ArtName>string</ArtName>
  <Qty>0</Qty>
  <Price>0</Price>
  <Subtotal>0</Subtotal>
  <OrderNrExternal>string</OrderNrExternal>
  <ItemNote>string</ItemNote>
  <ItemPriceNoVat>0</ItemPriceNoVat>
  <ItemAmountNoVat>0</ItemAmountNoVat>
  <OrderTotal>0</OrderTotal>
  <Discount>0</Discount>
  <VATTotal>0</VATTotal>
  <VATHigh>0</VATHigh>
  <VATLow>0</VATLow>
  <NettoTotal>0</NettoTotal>
  <ShipCost>0</ShipCost>
  <ShipCostNoVAT>0</ShipCostNoVAT>
  <TaxRateHigh>0</TaxRateHigh>
  <TaxRateLow>0</TaxRateLow>
  <OrderCurrencyCode>string</OrderCurrencyCode>
</PixiGetOrderTotalsPost200TextXmlResponse>

POST https://apigateway.descartes.com/tms/pixi/
Content-Type: text/xml; charset=utf-8
# echo -n '{{username}}:{{password}}' | base64 | pbcopy
Authorization: Basic {{token}}

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:ns1="https://apigateway.descartes.com/tms/pixi/"
                   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Body>
        <ns1:pixiGetOrderTotals>
            <CustKey xsi:type="xsd:integer">123</CustKey>
            <OrderNr xsi:type="xsd:integer">123</OrderNr>
            <OrderNrExternal xsi:type="xsd:string">abcdefg</OrderNrExternal>
        </ns1:pixiGetOrderTotals>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

<?php

getPixiSoapClientResponse('pixiGetOrderTotals', [
    'CustKey' => '123', // integer
    'OrderNr' => '123', // integer
    'OrderNrExternal' => 'abcdefg', // string
]);

function getPixiSoapClientResponse(string $method, array $arguments = [])
{
    $soapArguments = [];
    foreach ($arguments as $key => $value) {
        $soapArguments[] = new SoapVar($value, null, '', '', $key);
    }

    $soapClient = new SoapClient(null, [
        'login' => '...',
        'password' => '...',
        'uri' => 'https://apigateway.descartes.com/tms/pixi/',
        'location' => 'https://apigateway.descartes.com/tms/pixi/',
    ]);

    return $soapClient->__call($method, $soapArguments);
}