After the last article where I’ve shown how to consume WSDL Webservices with NTLM authentication, I present a particularity about that method.
The difficulty occurs when there’s more than one WSDL operation with the same name (that is, there are overloaded methods). When you don’t need NTLM authentication, the solution is rather simple, but when you do need NTLM authentication you need to be a little creative.
To be able to consume SOAP web services with PHP you need to install the PHP-SOAP extension. However, the SoapClient class provided by that extension does not allow NTLM authentication.
Before we go into the solution I would like to thank Thomas Rabaix for his blog post on March ‘08 about the subject. Indeed, his post is the real source for all the solutions online. If you hadn’t read the article I suggest you to do so.
