oleibman
08a6e7549f
Fix #4673. Our password hasher can handle different algorithms, but the workbook password (for maintaining the structure of the workbook, not for encrypting the entire workbook) currently supports only the single algorithm that was in place many years ago. Expand it, and Xlsx Reader and Writer, to be able to use, say, SHA-512, which is what Excel itself uses. The revisions password needs to be expanded in the same way as the workbook password. It is used for file sharing, but MS has deprecated it because it feels that modern technologies introduce better ways to accomplish what it was needed for. You'll need to look pretty hard to even find it in Excel - it's not, for example, on any of the ribbons. Nevertheless, the solution here is pretty much identical to the solution for the workbook password, so I am fixing it at the same time.
PhpSpreadsheet
PhpSpreadsheet is a library written in pure PHP and offers a set of classes that allow you to read and write various spreadsheet file formats such as Excel and LibreOffice Calc.
This is the master branch, and is maintained for security and bug fixes.
PHP Version Support
LTS: For maintained branches, support for PHP versions will only be maintained for a period of six months beyond the end of life of that PHP version.
Currently the required PHP minimum version is PHP 8.1, and we will support that version until 30th June 2026.
See the composer.json for other requirements.
Installation
See the install instructions.
Documentation
Read more about it, including install instructions, in the official documentation. Or check out the API documentation.
Please ask your support questions on StackOverflow, or have a quick chat on Gitter.
Patreon
I am now running a Patreon to support the work that I do on PhpSpreadsheet.
Supporters will receive access to articles about working with PhpSpreadsheet, and how to use some of its more advanced features.
Posts already available to Patreon supporters:
- The Dating Game
- A look at how MS Excel (and PhpSpreadsheet) handle date and time values.
- Looping the Loop
- Advice on Iterating through the rows and cells in a worksheet.
And for Patrons at levels actively using PhpSpreadsheet:
- Behind the Mask
- A look at Number Format Masks.
The Next Article (currently Work in Progress):
- Formula for Success
- How to debug formulae that don't produce the expected result.
My aim is to post at least one article each month, taking a detailed look at some feature of MS Excel and how to use that feature in PhpSpreadsheet, or on how to perform different activities in PhpSpreadsheet.
Planned posts for the future include topics like:
- Tables
- Structured References
- AutoFiltering
- Array Formulae
- Conditional Formatting
- Data Validation
- Value Binders
- Images
- Charts
After a period of six months exclusive to Patreon supporters, articles will be incorporated into the public documentation for the library.
PHPExcel vs PhpSpreadsheet ?
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 master branch.
Do you need to migrate? There is an automated tool for that.
License
PhpSpreadsheet is licensed under MIT.