The following blog entry has an example of how to write a PHP client for a web service exposed using XFire:
http://arsenalist.com/2007/01/19/php-client-for-web-services/
To consume XFire services from PHP requires the document/literal style of SOAP.
The PHP below assumes this entry in your services.xml:
Incidentally, enabling MTOM does not appear to work yet with PHP.
From PHP you'll need to specify this for your SOAP client
document/literal style requires that the argument be a document, with you make by an associative array. The response is also a document, in this case with one field, "out".
XFire does not support RPC/Encoding and PHP does not support wrapped document/literal, but they both do support RPC/Literal.
To use that, make this change to your services.xml:
and this to your PHP constructor:
Then you can make calls like this: