How can insert formula in excel sheet using phpexcel

Question

I have checked many sites for solution of my problem but not found proper solution. I want to insert formula which will calculate the total of marks obtained by students. Ma

Answer 1

@Mark Baker Thank you for show the way I tried and done like this -

$calculatRow='';
    for($ctr=0;$ctr < count($marksColumnArr);$ctr++)
    {
    $calculatRow.='(($'.$marksColumnArr[$ctr].'##/$'.$maXmarksColumnArr[$ctr].'$##)*'.$divisionVal[$ctr].')+';      
}
$calculateArrbyRow=substr($calculatRow,0,-1);    
// Replicate formula by row

 for($j=5;$j<count($totalStudents)+5;$j++){
   $formula=str_replace('##',$j,$calculateArrbyRow);
   $cell=PHPExcel_Cell::stringFromColumnIndex($coumnStart+12);
  $objPHPExcel->getActiveSheet()->setCellValue($cell.$j, '='.$formula);
 }    
$coumnStart=($coumnStart-1)+13; $subjectCtr++;
}

Answer 2

Read section 4.6.4 of the developer documentation, and examples like 03formulas.php.

You can write a formula as you'd write it in Excel itself, simply store the formula prefixed with = in the cell

e.g.

$objPHPExcel->getActiveSheet()
    ->setCellValue(
        'E10',
        '=SUM(A10:E9)'
    );

Will write the formula =SUM(A10:E9) in cell E10

When writing a formula to a cell, remember that:

• Decimal separator is . (period)
• Function argument separator is , (comma)
• Matrix row separator is ; (semicolon)
• English function names must be used

EDIT

for ($row = 1; $row <= 10; $row++) {
    $objPHPExcel->getActiveSheet()
        ->setCellValue(
            'J' . $row,
            '=SUM(A'.$row.':C'.$row.')/10 + SUM(D'.$row.':F'.$row.')/20 + SUM(G'.$row.':I'.$row.')/60'
        );
}