My PHP script have to create a multi-tabs Excel file with a report in each tab, but those reports already exists as HTML pages, so I don't want to duplicate code and work. I know I can rename a HTML file to .xls, and Excel/OpenOffice Calc will open it as a spreadsheet, but I don't know how to have severals tabs.
I do not even know if it is possible.
I already know Biffwriter and others PHP libs to create Excel file, but I am looking for a smarter solution.
Thanks, Cédric