Convert CSV file to Excel 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-csv-to-excel.html

Convert HTML file to Excel 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-html-to-excel.html

Export data to XML Spreadsheet Excel file in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS, ColdFusion, ASP.NET! https://www.easyxls.com/manual/basics/export-to-xml-spreadsheet-file-format.html

Create Excel file with conditional formatting for sheet cells using EasyXLS library! XLS, XLSX, XLSM, XLSB files in PHP. https://www.easyxls.com/manual/tutorials/php/excel-conditional-formatting.html

Excel file with data validation for sheet cells, drop down list and validate whole number, using EasyXLS library! XLS, XLSX, XLSM, XLSB in PHP.
https://www.easyxls.com/manual/tutorials/php/excel-validate-data.html

Create Excel file with name area in sheet using EasyXLS library! XLS, XLSX, XLSM, XLSB files in PHP.
https://www.easyxls.com/manual/tutorials/php/excel-name-area.html

Create Excel file with formula in sheet cells using EasyXLS library! XLS, XLSX, XLSM, XLSB files in PHP.
https://www.easyxls.com/manual/tutorials/php/add-excel-formula.html

Merge cells for Excel file using EasyXLS library! XLS, XLSX, XLSM, XLSB files in PHP.
https://www.easyxls.com/manual/tutorials/php/excel-merge-cells.html

How to set print area, page orientation, paper size or page breaks for Excel file in PHP using EasyXLS Excel library
https://www.easyxls.com/manual/tutorials/php/excel-print-area-page-orientation.html

Create Excel with header & footer in PHP by EasyXLS library! XLS, XLSX, XLSM, XLSB files in PHP.
https://www.easyxls.com/manual/tutorials/php/excel-footer-header.html