如何使用phpexcel在excel表中插入公式

我已经检查了很多网站以解决我的问题,但找不到合适的解决方案.我想插入一个公式来计算学生获得的商标总数.标记将由教师输入.我写了从数据库和maxmarks插入学生姓名后下载excel文件的php代码.我的excel文件看起来像这样看到图像因为我没有10个声誉我不允许在帖子中插入图片,请点击此链接http://cbsecsnip.in/Capture.JPG 标记栏是空白的,老师将在标记其他数据从数据库中获取,百分比列需要一个公式,当教师输入标记时,该公式将自动计算标记.填充列和百分比列受到保护.我使用PHPExcel.这是生成此excel文件的php代码

='2014-04-01' AND `pre_todate`<='2015-03-31'";
$rs=mysqli_query($Link, $SQL);//get the result (ressource)
$SQL1="SELECT a.`total_marks`,a.`pass_marks`,b.es_subjectname FROM `es_exam_details` as a JOIN `es_subject` as b ON a.`subject_id`=b.`es_subjectid` JOIN es_exam_academic as c ON c.es_exam_academicid=a.academicexam_id WHERE es_subjectshortname=25";
$rs1=mysqli_query($Link, $SQL1);//get the result (ressource)
$SQL2="SELECT distinct(b.es_subjectname) as subjects FROM `es_exam_details` as a JOIN `es_subject` as b ON a.`subject_id`=b.`es_subjectid` JOIN es_exam_academic as c ON c.es_exam_academicid=a.academicexam_id WHERE es_subjectshortname=25";

$rs2=mysqli_query($Link, $SQL2);//get the result (ressource)
while($objResult1 =mysqli_fetch_assoc($rs2)){
    $subjects[] = $objResult1["subjects"];
} 
while($objResult =mysqli_fetch_assoc($rs1)){
    $totalmarks[] = $objResult["total_marks"];
    $term[] = $objResult["aca_term_name"]; 
}

$totalStudents=array();
while($objResult =mysqli_fetch_assoc($rs)){
$totalStudents[] = $objResult;
}

$Sa1Sa2marks=60;
require_once 'Classes/PHPExcel.php';
require_once 'Classes/PHPExcel/IOFactory.php';

// read in the existing file
$objPHPExcel = PHPExcel_IOFactory::load("blank.xls");

// modify/insert data in worksheet cells
$styleArray = array(
  'borders' => array(
     'outline' => array(
        'style' => PHPExcel_Style_Border::BORDER_THIN,
           'color' => array('argb' => '000000'),
             ),
       ),
       'fill' => array(
          'type' => PHPExcel_Style_Fill::FILL_SOLID,
          'color' => array('rgb' => '686868')
        )
);

$F=$objPHPExcel->getActiveSheet();
$G=$objPHPExcel->setActiveSheetIndex(0);
$G->getProtection()->setSheet(true);

// for 1st row heading subject heading setting 
$objPHPExcel->getActiveSheet()->mergeCells("A1:B1")->setCellValueByColumnAndRow(0,1, "Subject");
$objPHPExcel->getActiveSheet()->getStyle('A1')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle('A1:B1')->applyFromArray($styleArray);
$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(40);

// for 2nd row heading subject heading setting 

$objPHPExcel->getActiveSheet()->mergeCells("A2:B2")->setCellValueByColumnAndRow(0,2, "Term");
$objPHPExcel->getActiveSheet()->getStyle('A2')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle('A2:B2')->applyFromArray($styleArray);
$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(40);

// for 3rd row heading subject heading setting 
$objPHPExcel->getActiveSheet()->mergeCells("A3:B3")->setCellValueByColumnAndRow(0,3, "Exam");
$objPHPExcel->getActiveSheet()->getStyle('A3')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle('A3:B3')->applyFromArray($styleArray);
$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(40);

// for 4th row heading subject heading setting 
$objPHPExcel->getActiveSheet()->setCellValue('A4', "ROLL");
$objPHPExcel->getActiveSheet()->getStyle('A4')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle('A4')->applyFromArray($styleArray);
$objPHPExcel->getActiveSheet()->setCellValue('B4', "NAME");
$objPHPExcel->getActiveSheet()->getStyle('B4')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle('B4')->applyFromArray($styleArray);

//subject list setting
$row=1;
$coumnStart=1;
$subjectCtr=0;
foreach($subjects as $subject)
{   
$coumnStart++;
$StartcolumnIndex=PHPExcel_Cell::stringFromColumnIndex($coumnStart);
$EndcolumnIndex = PHPExcel_Cell::stringFromColumnIndex(($coumnStart-1) + 13);

// 1st row
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.$row.':'.$EndcolumnIndex.$row)->setCellValueByColumnAndRow($coumnStart,1, $subject);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.$row)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.$row.':'.$EndcolumnIndex.$row)->applyFromArray($styleArray);

// 2nd  row for Term1
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($coumnStart-1) + 6);

$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+1).':'.$EndcolumnIndex2.($row+1))->setCellValueByColumnAndRow($coumnStart,2, 'TERM 1');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+1))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+1).':'.$EndcolumnIndex2.($row+1))->applyFromArray($styleArray);

//for FA1 Sem setting param
$semIndex=$coumnStart;
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($semIndex-1) + 2);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->setCellValueByColumnAndRow($semIndex,3, 'FA1');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->applyFromArray($styleArray);
$semIndex=$semIndex+2;

//for FA2
$StartcolumnIndex = PHPExcel_Cell::stringFromColumnIndex($semIndex);
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($semIndex-1) + 2);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->setCellValueByColumnAndRow($semIndex,3, 'FA2');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->applyFromArray($styleArray);
$semIndex=$semIndex+2;

//for SA1
$StartcolumnIndex = PHPExcel_Cell::stringFromColumnIndex($semIndex);
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($semIndex-1) + 2);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->setCellValueByColumnAndRow($semIndex,3, 'SA1');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->applyFromArray($styleArray);
$semIndex=$semIndex+2;

// for Term2
$StartcolumnIndex2=PHPExcel_Cell::stringFromColumnIndex(($coumnStart) + 6);
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex($coumnStart + 12);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex2.($row+1).':'.$EndcolumnIndex2.($row+1))->setCellValueByColumnAndRow($coumnStart+6,2, 'TERM 2');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex2.($row+1))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex2.($row+1).':'.$EndcolumnIndex2.($row+1))->applyFromArray($styleArray);

//FA3
$StartcolumnIndex = PHPExcel_Cell::stringFromColumnIndex($semIndex);
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($semIndex-1) + 2);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->setCellValueByColumnAndRow($semIndex,3, 'FA3');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->applyFromArray($styleArray);
$semIndex=$semIndex+2;

//FA4
$StartcolumnIndex = PHPExcel_Cell::stringFromColumnIndex($semIndex);
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($semIndex-1) + 2);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->setCellValueByColumnAndRow($semIndex,3, 'FA4');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->applyFromArray($styleArray);
$semIndex=$semIndex+2;

//SA2
$StartcolumnIndex = PHPExcel_Cell::stringFromColumnIndex($semIndex);
$EndcolumnIndex2 = PHPExcel_Cell::stringFromColumnIndex(($semIndex-1) + 2);
$objPHPExcel->getActiveSheet()->mergeCells($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->setCellValueByColumnAndRow($semIndex,3, 'SA2');
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($StartcolumnIndex.($row+2).':'.$EndcolumnIndex2.($row+2))->applyFromArray($styleArray);
$semIndex=$semIndex+2;

// every 13th column total marks & precentage
$totalMarksColumIndex=PHPExcel_Cell::stringFromColumnIndex($coumnStart + 12);
$objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($coumnStart+12,3, 'TOTAL MARKS');
$objPHPExcel->getActiveSheet()->getStyle($totalMarksColumIndex.($row+2))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($totalMarksColumIndex.($row+2))->applyFromArray($styleArray);

$objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($coumnStart+12,4, 'PERCENTAGE');
$objPHPExcel->getActiveSheet()->getStyle($totalMarksColumIndex.($row+3))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objPHPExcel->getActiveSheet()->getStyle($totalMarksColumIndex.($row+3))->applyFromArray($styleArray);
$objPHPExcel->getActiveSheet()->getColumnDimension($totalMarksColumIndex)->setWidth(20);

// putting marks column heading
$flag=1;
for($i=$coumnStart;$i<$coumnStart+12;$i=$i+1)
{
$MarksheadingIndex=PHPExcel_Cell::stringFromColumnIndex($i);    
 if($flag%2==1) 
  {
   $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($i,4, 'MARKS');
   $objPHPExcel->getActiveSheet()->getStyle($MarksheadingIndex)->getProtection()->setLocked(PHPExcel_Style_Protection::PROTECTION_UNPROTECTED);
  }
 else 
  {
   $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($i,4, 'MAXMARKS');
    // setting the max marks
      for($j=5;$jgetActiveSheet()->setCellValueByColumnAndRow($i,$j, $Sa1Sa2marks);    
        }
        else if($flag==2 || $flag==8)
        {
         $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($i,$j, 40);  
        }
        else
        {
         $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($i,$j, 20);     
        }
      }
  }

 $objPHPExcel->getActiveSheet()->getStyle($MarksheadingIndex.($row+3))->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
 $objPHPExcel->getActiveSheet()->getStyle($MarksheadingIndex.($row+3))->applyFromArray($styleArray); 
 $objPHPExcel->getActiveSheet()->getColumnDimension($MarksheadingIndex)->setWidth(15);
$flag++;    
}

$coumnStart=($coumnStart-1)+13; $subjectCtr++;
}

// putting students name with rollno

$Line=5;
 foreach($totalStudents as $student){//extract each record
        $studentName= $student['pre_name'];
        if($student['pre_fathersoccupation']!=''){$studentName.=' '.$student['pre_fathersoccupation'];}
        if($student['pre_motheroccupation']!=''){$studentName.=' '.$student['pre_motheroccupation'];}
        $objPHPExcel->getActiveSheet()->setCellValue('A'.$Line,  $student['admissionnumber']);
        $objPHPExcel->getActiveSheet()->setCellValue('B'.$Line,  $studentName);
    ++$Line;
       }

header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="newFile.xlsx"');
header('Cache-Control: max-age=0');

$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output'); 

?>

如果有专家指导我怎么能这样做,我将感谢所有人