phpspreadsheet setCellValue is not writing - php

Question

I am uploading a excel file, reading the contents and writing to a new excel file using phpspreadsheet.
I am trying to create a excel file.
I am writing into cells using the following code
$writesheet->setActiveSheetIndex(0)->setCellValue('A1','myemail#gmail.com');
these lines
echo 'valid';
echo $cell;
echo $toemail;
print all the values correctly.
But this line of code is not working..
Full code:
<?php
include '../includes/common.php';
include "class.emailvalidator.php";
/////////////////////////////////////EXCEL READER ////////////////////////////////
if(!empty($_FILES)){
require 'spreadsheet/vendor/autoload.php';
$file = $_FILES['files']['tmp_name'];
$file_name = $_FILES['files']['name'];
$upload_path = 'files/'.$file_name;
if(move_uploaded_file($file,$upload_path)){
$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($upload_path);
$worksheet = $spreadsheet->getActiveSheet();
$highestRow = $worksheet->getHighestRow();
for ($row = 1; $row <= $highestRow; ++$row) {
$toemail = $worksheet->getCellByColumnAndRow(1, $row)->getValue();
$fromemail = 'admin#myimsuite.com';
$details = verifyEmail($fromemail,$toemail,true);
$writesheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
$cell = 'A'.$row;
if($details[0]== 'valid'){
echo 'valid';
echo $cell;
echo $toemail;
$writesheet->setActiveSheetIndex(0)->setCellValue($cell, $toemail);
}elseif($details[0]== 'invalid'){
}
}
if(file_exists($upload_path)){
unlink($upload_path);
}
$writer = new \PhpOffice\PhpSpreadsheet\Writer\Xlsx($writesheet);
$fxls ='excel-file_1.xlsx';
$writer->save($fxls);
if(file_exists($fxls)){
//force_download($fxls);
}
}
die();
}
function force_download($filename) {
$filedata = #file_get_contents($filename);
// SUCCESS
if ($filedata)
{
// GET A NAME FOR THE FILE
$basename = basename($filename);
// THESE HEADERS ARE USED ON ALL BROWSERS
header("Content-Type: application-x/force-download");
header("Content-Disposition: attachment; filename=$basename");
header("Content-length: " . (string)(strlen($filedata)));
header("Expires: ".gmdate("D, d M Y H:i:s", mktime(date("H")+2, date("i"), date("s"), date("m"), date("d"), date("Y")))." GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
// THIS HEADER MUST BE OMITTED FOR IE 6+
if (FALSE === strpos($_SERVER["HTTP_USER_AGENT"], 'MSIE '))
{
header("Cache-Control: no-cache, must-revalidate");
}
// THIS IS THE LAST HEADER
header("Pragma: no-cache");
// FLUSH THE HEADERS TO THE BROWSER
flush();
// CAPTURE THE FILE IN THE OUTPUT BUFFERS - WILL BE FLUSHED AT SCRIPT END
ob_start();
echo $filedata;
}
// FAILURE
else
{
die("ERROR: UNABLE TO OPEN $filename");
}
}
/////////////////////////////////////EXCEL READER ////////////////////////////////
////////////////////////Email Related//////////////////////////////
//var_dump($log);
////////////////////////End Email Related//////////////////////////////
$objSmarty->assign("page",'bannerindex');
$objSmarty->setTemplateDir("../templates");
$objSmarty->display("email_validator.tpl");
?>

Answer 1

Try running $writer->setPreCalculateFormulas(false); - fixed it for me