> For the complete documentation index, see [llms.txt](https://apphp.gitbook.io/build-your-own-llm-in-php/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apphp.gitbook.io/build-your-own-llm-in-php/getting-started/license-and-copyright.md).

# License and Copyright

© 2026, **Samuel Akopyan**\
Email: **<admin@apphp.com>**\
Website: [**https://apphp.com**](https://apphp.com)

This book is distributed under the\
**Creative Commons Attribution 4.0 International (CC-BY-4.0)** license.

Any contribution (pull request) accepted into the book’s repository is considered to be provided under the terms of the **CC-BY-4.0** license, unless explicitly stated otherwise.

You are free to use, copy, distribute, and modify this book, including for commercial purposes, provided that proper attribution is given and a link to the license is included.\
If you make changes, you must indicate that the original material has been modified.

The full license text is available at:\
<https://creativecommons.org/licenses/by/4.0/>