<PixiGetOrderHeadersByOrderDatePost200TextXmlResponse>
  <OrderHeaderKey>0</OrderHeaderKey>
  <OrderNr>0</OrderNr>
  <CreateDate>string</CreateDate>
  <OrderNrExternal>string</OrderNrExternal>
  <OrderTotal>string</OrderTotal>
  <OrderlinesTotal>string</OrderlinesTotal>
  <WholeOrderState>string</WholeOrderState>
  <Shipdate>string</Shipdate>
  <LastShipdate>string</LastShipdate>
  <TrackingID>string</TrackingID>
  <ShipVendor>string</ShipVendor>
  <ShopID>string</ShopID>
  <OrderDate>string</OrderDate>
  <ShipCost>string</ShipCost>
  <PaymentAddressId>0</PaymentAddressId>
  <ShipmentAddressId>0</ShipmentAddressId>
  <ShopNote>0</ShopNote>
  <PaymentType>string</PaymentType>
  <VoucherID>string</VoucherID>
  <VoucherAmount>string</VoucherAmount>
  <CcCardType>string</CcCardType>
  <CcCardNr>string</CcCardNr>
  <CcCardName>string</CcCardName>
  <CcCardExp>string</CcCardExp>
  <Account>string</Account>
  <Blz>string</Blz>
  <BankName>string</BankName>
  <AccountName>string</AccountName>
  <AddressRemarks>string</AddressRemarks>
  <AddrRef>0</AddrRef>
  <ZIP>string</ZIP>
  <CustKey>0</CustKey>
  <OrderLocked>string</OrderLocked>
  <CurrencyCode>string</CurrencyCode>
</PixiGetOrderHeadersByOrderDatePost200TextXmlResponse>

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:pixiGetOrderHeadersByOrderDate>
            <ShopID xsi:type="xsd:string"></ShopID>
            <ToDate xsi:type="xsd:string"></ToDate> <!-- required -->
            <FromDate xsi:type="xsd:string"></FromDate> <!-- required -->
        </ns1:pixiGetOrderHeadersByOrderDate>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

<?php

getPixiSoapClientResponse('pixiGetOrderHeadersByOrderDate', [
    'ShopID' => '', // string
    'ToDate' => '', // string (required)
    'FromDate' => '', // string (required)
]);

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);
}