Remove whitespaces from SoapClient request in PHP - php

Question

I'm creating a SOAP request via PHP native SoapClient class. When I dump the request using SoapClient::__getLastRequest I'll get:
<?xml version="1.0" encoding="UTF-8"?>\n
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:microsoft-dynamics-schemas/page/itemb2cws"><SOAP-ENV:Body><ns1:ReadMultiple><ns1:filter/><ns1:setSize>100</ns1:setSize></ns1:ReadMultiple></SOAP-ENV:Body></SOAP-ENV:Envelope>
Is there any way, how to remove the line feed or any other whitespace between XML elements?
Our client is using some old version of ERP Microsoft Dynamics Nav and the server falls when gets whitespace in request.

Answer 1

Solved
Via https://stackoverflow.com/questions/14363147/php-soapclient-malformed-xml#:~:text=override%20the%20SoapClient::__doRequest
Just extend native PHP SoapClient and override the SoapClient::__doRequest() method.
Example:
<?php
declare(strict_types=1);
namespace App\Soap;
use SoapClient;
class Client extends SoapClient
{
public function __doRequest($request, $location, $action, $version, $one_way = 0)
{
$request = $this->filter($request);
parent::__doRequest($request, $location, $action, $version, $one_way);
}
private function filter(string $request): string
{
return preg_replace( '#\R+#', '', $request);
}
}
And you're done.