Question

Can an excel file be manipulated with PHP? Can I insert certain value in certain cell?

Answer 1

See:
http://phpexcel.codeplex.com/

That has all the functions you could ever need.

Sample:

4.5.1. Setting a cell value by coordinate Setting a cell value by coordinate can be done using the worksheet’s setCellValue method.

$objReader = new PHPExcel_Reader_Excel2007();
$objPHPExcel = $objReader->load("05featuredemo.xlsx");    
$objPHPExcel->getActiveSheet()->setCellValue('B8', 'Some value');