Danne Lundqvist has a quick new post with pointers to two articles that're good resources for getting you started with web services and PHP.

So after loads of googling I came to realise that even though 2010 is just around the corner there are still very few quality articles on PHP and web services/SOAP available. Most of the stuff I find is rubbish where people who don’t know nothing explain things they don’t understand.

He links to one article on the IBM developerWorks site looking at the styles of WSDL files and which methods could work best for your problems and information about WS02 and it's SOAP client functionality.