PHPExcel
Maarten Balliauw zeigt wie sich die DRY Philosophie mit PHPExcel realisieren lässt.
Embedding business logic in Excel and re-using it in PHP is not that hard. The PHPExcel library helps you simplify development: your application logic and business logic is separated. Business logic can be maintained by a business expert or key user in Excel. As an application developer, you can easily pass data in the sheet and make use of PHPExcel’s calculation engine.