LibrePages is a free software project to provide a simple set of tools to easily build web applications using PHP. Its focus does not lie on the development of fullstack applications, but on REST API development.
The source code contains most documentation you need to get started. You can also find a couple of examples in the existing project code.
To get a bigger overview of the functionality available to you, you can generate docs via phpDocumentor.
As soon as you installed it, you can use the doc script to generate proper docs.
LibrePages is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
A copy of the license may be found in the file COPYING or online
(version 3 of the GNU Affero General Public License)