WSO2's WSF/PHP and Apache Ramaprt/C

Following diagram shows how the WSO2 WSF/PHP is arranged...



Basically the WSO2 WSF/PHP is a PHP extension. It can be seen as the upper layer of a 3-core wire.
And inside it there is another layer wrapping many other products, which we call the WSO2 WSF/C. These products are the implementations of WS-* of specifications including Apache Rampart/C, Apache Sandesha2/C, Apache Savan/C.
A PHP user will basically consume/provide web services by using the upper WSF/PHP layer. The core specifications and implementations are transparent to the PHP user to make the life easier. But sometimes it's worth to know how exactly are the inner components arranged. :)

In order to provide security, WSO2 WSF/PHP uses Apache Rampart/C. Actually via WSO2 WSF/C. Apache Rampart/C is the security module for the Apache Axis2/C engine, which the WSF/PHP depends on. You may refer my this blog entryto see how to write a PHP script to encrypt a SOAP message.