License and Copyright

© 2026, Samuel Akopyan Email: [e-mail] Website: 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/