kaidoj/PHP-NTLM-Soap
A composer package based on this article https://blogs.msdn.microsoft.com/freddyk/2010/01/19/connecting-to-nav-web-services-from-php/
PHPMIT
A composer package based on this article https://blogs.msdn.microsoft.com/freddyk/2010/01/19/connecting-to-nav-web-services-from-php/
PHPMIT