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PhpSpreadsheet is a library written in pure PHP and providing a set of classes that allow you to read from and to write to different spreadsheet file formats, like Excel and LibreOffice Calc.
If you would like to contribute, here are some notes and guidelines:
- All new development happens on feature/fix branches referenced with the GitHub issue number, and are then merged to the develop branch; so the develop branch is always the most up-to-date, working code
- If you are going to be submitting a pull request, please fork from develop, and submit your pull request back as a fix/feature branch referencing the GitHub issue number
PhpSpreadsheet is the next version of PHPExcel. It breaks compatibility to dramatically improve the code base quality (namespaces, PSR compliance, use of latest PHP language features, etc.).
Because all efforts have shifted to PhpSpreadsheet, PHPExcel will no longer be maintained. All contributions for PHPExcel, patches and new features, should target PhpSpreadsheet develop branch.
However PhpSpreadsheet is still unstable and not yet released. So if you need stability stick to PHPExcel until this project is released. If you prefer to live on the edge you can try install to this project [manually via composer](https://getcomposer.org/doc/05-repositories.md#loading-a-package-from-a-vcs-repository), but there is no guarantee and it will likely break again before an official release.