Convert HTML to Excel file in C#.NET from ASP.NET web pages or windows application by EasyXLS library! XLS, XLSX, XLSM, XLSB in .NET.
https://www.easyxls.com/manual/tutorials/csharp/convert-html-to-excel.html

Convert HTML to Excel file in PHP by EasyXLS library! XLS, XLSX, XLSM, XLSB in PHP.

https://www.easyxls.com/manual/tutorials/php/convert-html-to-excel.html

Export data to HTML file in PHP using EasyXLS library! Spreadsheets in PHP.
https://www.easyxls.com/manual/tutorials/php/export-data-to-html-file.html

Convert Excel file to HTML in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-excel-to-html.html