While writing the excel file is fine I see that really long numbers are formulas in excel
Example: 8.71129E+12
instead of: 1234567890
How can I chang
$objPHPExcel->getActiveSheet()->setCellValueExplicit('A1', '1234567890', PHPExcel_Cell_DataType::TYPE_STRING);
Try this code it's works for me :
$objPHPExcel
->getActiveSheet()
->getCellByColumnAndRow($col, $row)
->setValueExplicit($value, PHPExcel_Cell_DataType::TYPE_STRING);
And Good luck !
Either set the value explicitly as a string, or set a number format mask for the cell that forces display of all digits (e.g. '#,##0' 0r '0') rather than default format.