SitePoint's PHP blog has a new post that walks you through the creation of Excel files with the help of the PHPExcel tool, a part of the overall PHPOffice package.

After my article “How To Make Microsoft Word Documents with PHP” (using Interop capability under Windows), there were quite a few comments urging a pure PHP implementation, i.e., only using a universal PHP library to manipulate Office files. In this article, we will see how to use a PHPExcel library to provide an “Export to Excel” function in a web app so that the user can export the data into an Excel 2007/2013 file for further analysis.

His example spreadsheet shows game information for an NBA team (the LA Lakers) including some charting and analytic data in the exported output. He sets up a simple Silex application and both a base and export endpoints. He also shows you how to create the PHPExcel instance, configure it with properties like creator, title and a set of keywords. With this object in place he moves into setting data for each of the rows/cells, populating it from a database table. He also includes examples of creating more than one sheet of results, inserting formulas and creating the charts mentioned earlier.