<PixiGetDatevExportInvoicesPost200TextXmlResponse>
  <Source>string</Source>
  <OrderCurrency>string</OrderCurrency>
  <InvDate>string</InvDate>
  <Country>string</Country>
  <MwstSatz>0</MwstSatz>
  <Sign>string</Sign>
  <Price>0</Price>
  <PriceInCents>string</PriceInCents>
  <VatCode>0</VatCode>
  <BookKeepingAccount>string</BookKeepingAccount>
  <AccountNrItems>string</AccountNrItems>
  <InvoiceNr>string</InvoiceNr>
  <Empty1>string</Empty1>
  <InvoiceDate>string</InvoiceDate>
  <CustomerNr>string</CustomerNr>
  <Empty2>string</Empty2>
  <Empty3>string</Empty3>
  <Empty4>string</Empty4>
  <Skonto>0</Skonto>
  <InvText>string</InvText>
  <OrderNrExternal>string</OrderNrExternal>
  <CustomerName>string</CustomerName>
  <Firstname>string</Firstname>
  <Lastname>string</Lastname>
  <VatID>string</VatID>
  <Gegenkonto>string</Gegenkonto>
  <IsEU>true</IsEU>
  <CntCodeISO2>string</CntCodeISO2>
  <ExchRate>string</ExchRate>
  <CostCenter>string</CostCenter>
</PixiGetDatevExportInvoicesPost200TextXmlResponse>

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:pixiGetDatevExportInvoices>
            <DateTo xsi:type="xsd:string"></DateTo> <!-- required -->
            <ShopId xsi:type="xsd:string"></ShopId>
            <Country xsi:type="xsd:string"></Country>
            <DateFrom xsi:type="xsd:string"></DateFrom> <!-- required -->
            <InvoiceNr xsi:type="xsd:string"></InvoiceNr>
            <CostCenter xsi:type="xsd:string"></CostCenter>
            <ShowOnlySums xsi:type="xsd:boolean"></ShowOnlySums> <!-- required -->
            <OrderNrExternal xsi:type="xsd:string"></OrderNrExternal>
            <BookKeepingAccount xsi:type="xsd:string"></BookKeepingAccount>
        </ns1:pixiGetDatevExportInvoices>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

<?php

getPixiSoapClientResponse('pixiGetDatevExportInvoices', [
    'DateTo' => '', // string (required)
    'ShopId' => '', // string
    'Country' => '', // string
    'DateFrom' => '', // string (required)
    'InvoiceNr' => '', // string
    'CostCenter' => '', // string
    'ShowOnlySums' => '', // boolean (required)
    'OrderNrExternal' => '', // string
    'BookKeepingAccount' => '', // 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);
}