Rewrite C# code to PHP 8.1

We need a developer who is confident in PHP and has a good understanding of C#. Specifically, we need someone who can rewrite C# .NET 4.5.2 to PHP 8.1. We will give you the code to be rewritten, and at the same time you will get access to our VPN, which is required since the code you send back to us must work behind a firewall that requires you to use the VPN.

We expect you to know well how to establish connections with x509 certificates. In addition, we expect you to understand the principles behind SOAP - both in C# and PHP.