A while back I did a post Consuming the EloquaService WSDL with PHP that later turned out didn't really work too well!
Many developers are running into issues consuming the EloquaService WSDL, which is preventing them from building on the Eloqua Platform.
Well, there is now good news...Eloqua has developed an Eloqua PHP Client, and it is now in Alpha testing.
If you are a developer working with PHP, and are having trouble using the Eloqua API, please go to the link above and check out the great work that Syed has done!