This may be of use to people. This is pulled out of a project I'm working on. It's a PHP library that manages the low-level integration with the Caspio REST API. If I have time I'll pull more classes out of the project that might be helpful and integrate them into this library. But it demonstrates the basics of interacting with the Caspio REST API via PHP. https://github.com/moksamedia/caspio-rest-api-lib