README

RestFn ("REST function") is a PHP library for building a single, functional-style endpoint.

Instead of having many REST endpoints, you have one. The client sends a request that is a tree of operations, and the server runs that tree to shape the response. You write actions for the actual work, and the client composes those actions with built-in operations (get, map, sort, run, and so on) to get back the data it needs in one request.

RestFn is the engine for this. It gives you the operation language and a dependency injection container to wire everything together; you provide the endpoint and the actions.

Requires PHP 8.4+.

User guide

User guide is available on https://restfn.readthedocs.io/en/latest

Manual generation

1. Install Python and pip.
2. Install mkdocs with pip install mkdocs
3. From project's directory run mkdocs build
4. Manual will be built in the site folder.

Testing

Testing is done using PHPUnit

• To run all tests run composer test
• To generate test coverage run composer coverage

Code quality

Formatting, linting, and static analysis are handled by Mago, installed as a dev dependency.

• To format the code run composer format
• To lint the code run composer lint
• To run static analysis run composer analyze
• To run everything (format check, lint, analyze, tests) run composer check

CI runs the tests and all three Mago checks on every push and pull request.

License

Copyright 2026 Aleksandar Panic

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0 or in this repository

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.