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# PHPExcel - OpenXML - Read, Write and Create spreadsheet documents in PHP - Spreadsheet engine
PHPExcel is a library written in pure PHP and providing a set of classes that allow you to write to and read from different spreadsheet file formats, like Excel (BIFF) .xls, Excel 2007 (OfficeOpenXML) .xlsx, CSV, Libre/OpenOffice Calc .ods, Gnumeric, PDF, HTML, ... This project is built around Microsoft's OpenXML standard and PHP.
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Master: [](http://travis-ci.org/PHPOffice/PHPExcel)
Develop: [](http://travis-ci.org/PHPOffice/PHPExcel)
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## File Formats supported
### Reading
* BIFF 5-8 (.xls) Excel 95 and above
* Office Open XML (.xlsx) Excel 2007 and above
* SpreadsheetML (.xml) Excel 2003
* Open Document Format/OASIS (.ods)
* Gnumeric
* HTML
* SYLK
* CSV
### Writing
* BIFF 8 (.xls) Excel 95 and above
* Office Open XML (.xlsx) Excel 2007 and above
* HTML
* CSV
* PDF (using either the tcPDF, DomPDF or mPDF libraries, which need to be installed separately)
## Requirements
* PHP version 5.2.0 or higher
* PHP extension php_zip enabled (required if you need PHPExcel to handle .xlsx .ods or .gnumeric files)
* PHP extension php_xml enabled
* PHP extension php_gd2 enabled (optional, but required for exact column width autocalculation)
## Want to contribute?
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If you would like to contribute, here are some notes and guidlines:
- All development happens on the develop branch, so it is always the most up-to-date
- The master branch only contains tagged releases
- If you are going to be submitting a pull request, please branch from develop, and submit your pull request back to the develop branch
- [Helpful article about forking ](https://help.github.com/articles/fork-a-repo/ "" )
- [Helpful article about pull requests ](https://help.github.com/articles/using-pull-requests/ "" )
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## License
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PHPExcel is licensed under [LGPL (GNU LESSER GENERAL PUBLIC LICENSE) ](https://github.com/PHPOffice/PHPExcel/blob/master/license.md )
