...To that effect, the server is implemented in PHP with few external dependencies to ensure that this can be run on even the leanest of web hosts.
The project includes the related tools from FreeMarker templates (used to generate RPC glue code) to the PHP "compiler" (static inlining of PHP includes in order to reduce runtime search overhead).
A simple, easy to use RPC alternative to SOAP or XML-RPC with built in code generation. Focussed on ease of use, simplicity, and having a human readable protocol. Check out the WIKI for documentation and examples.
The PRAjax class can be used to reflect PHP code into JavaScript and Ajax methods and vice-versa. PHP objects can be used in JavaScript trough Ajax calls, both properties and (registered) functions.
PHP-O-Lait is a library that, in 2 boiler-plate lines of code, allows you to call server-side PHP code from client-side JavaScript. It's so easy, in fact, that you don't need to know how it does it (hint, it uses Ajax and JSON).