Forcing PHPExcel download in CodeIgniter doesn't work - php

I'm trying to download a excelsheet that has been generated with PHPExcel, being new to PHPExcel i've been trying to do this with the provided Example in the documentation. However I can't get the script to download for me, the only thing it does is outputting the following;
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mð¥×ÁX¿(ÅÛü)¿òF¹à¡;#1_æ»±Øc)j¢x/%êEày¦
©QÄ¿i!£ÒKµy3ÜJ<§Z1½0?YÙL%zV
cäÖIb7Øûìa/lÙ¥P1:«qáríÍjªÊj0A¯Íuë""íàÙ( ÁWìMä)Tjå({ܲû>óOãÂ,XÙ­ÁÚÆ>Bÿ~×­ÏõÓ¤6ÜJ=¡oBZ¾°¼tìíX4Êú¾Cgñ,QgmrLÙÙ¯cïeëàtø± Zõ?´»hPvÃð±úÿuÕjÀ¼Râæ¸øûî}¬CvÖøPKjG¶78éK_rels/.rels­ÍjÃ0ï{
£{£´1F^Ê ·2²Ðlå$±½-}ûy±ºÒÃ¥OvûyÕ;ØÓ°.JPìØÞµ^ê§Õ¨ÈYű3GØWw»g)åØõ>ªqQCD¦ãb!]þi$Lò3´èÉÔ2nÊòÃoT¦:Z
áh· ê³ç[ØÒ4½á·]ºÐyNì,Û¹>¤>£j
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VÌ)#÷EF^6ÚÜnô÷´8q"KÐHàë>_×Öÿ¹¢eÆÍ<âáUdøvÁÅ
TPKjG$±Vé¹xl/_rels/workbook.xml.rels­ÁjÃ0Dïý
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&$ØÔwë74çr}$M<)pÌñEJ2GMEèóMÒ¨9ËÔɨÍ^w(Weù$ÓÜêO±³
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$¬òMM×2ê!çO®×oðG¬FÍÇF¿$Ï «EÏ°#§äûÎë?PKjGòqå1µ¢docProps/core.xml¥AoÛ Çïûëæ`­,ǺªÚ¡Ñ"5Óreðâ°b#çúÛcÇM×*íÞïýòú©Qè8/^cºÈ1ͺ^ã»»ìF>0-2Ö¸¯«w%·7¶ÎXpAGQ¤}ÁíC°!¡a~ ãâÒÕÄ2þÈj Ë<¿"
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èà ]PòÌp¿¸!UÎÈFÞÂEôTé'/g°ëºE·Jhìýæþ!I=DÅW¥àwÀqÕ1#£¦dmW³â¤b>lbä ⦿À¿fÊiÐÑÅqSåçêëíîWË~Ê(Íh¾£WÅòc±¢ïsZäùÐÇɳµNú?íÉÒ2(¨¾¹}Fûû=ÚèÖðv¸ËÌ[xî¤
ñiVâ[Bÿª> 4¸FëãûEÛo[Äcpü"©ÏþýõxxKW't¸¯Gè;ã¯ÌÙ¾é#{´éÂf(}ØUm\?áÀ·*!$t®«ßªúPKjGs{Y³¦xl/theme/theme1.xmlíYOoÛ6¿ïSº·²lÉu:EìØëÖ¦
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I am using this script;
<?php
class Excel extends MY_Controller {
public function __construct()
{
parent::__construct();
include(APPPATH.'libraries/Classes/PHPExcel.php');
include(APPPATH.'libraries/Classes/PHPExcel/IOFactory.php');
$this->load->helper('download');
}
public function exporteerFactuur()
{
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
->setLastModifiedBy("Maarten Balliauw")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Test result file");
// Add some data
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Hello')
->setCellValue('B2', 'world!')
->setCellValue('C1', 'Hello')
->setCellValue('D2', 'world!');
// Miscellaneous glyphs, UTF-8
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A4', 'aaa')
->setCellValue('A5', 'aaa');
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Simple');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel2007)
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="01simple.xlsx"');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
}
public function exporteer()
{
}
}
The function exporteerFactuur() get called with an AJAX request.


I would try the CodeIgniter Download Helper if the file is not too big, and you don't have memory constraints.
// The Download helper handles most of the HTTP headers but you could still send some if you like
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header('Pragma: public'); // HTTP/1.0
// Load the download helper
$this->load->helper('download');
// Save and capture output (into PHP memory)
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
ob_start();
$objWriter->save('php://output');
$excelFileContents = ob_get_clean();
// Download file contents using CodeIgniter
force_download('01simple.xlsx', $excelFileContents);
If you'd prefer to do it all yourself, I would also add header("Content-Transfer-Encoding: binary"); and check the code for CodeIgniter's force_download to get a clue of which headers are sent by the helper.

Related

PHP excel weird characters

I'm using the basic phpexcel 01simple-download-xlsx.php as Is
Didnt add any code of my own for now ..
And I get unexpected results
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
->setLastModifiedBy("Maarten Balliauw")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Test result file");
// Add some data
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Hello')
->setCellValue('B2', 'world!')
->setCellValue('C1', 'Hello')
->setCellValue('D2', 'world!');
// Miscellaneous glyphs, UTF-8
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A4', 'Miscellaneous glyphs')
->setCellValue('A5', 'hello');
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Simple');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel5)
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="01simple.xls"');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
exit;
And this is what i get
https://i.imgur.com/GKc5xRq.png

The problem was that some other characters were printed before my function

phpexcel insert qrcode into excel and save it to client end

I was trying to export data to excel file with a QRcode within a cell.
I googled up and tried for clue.
Finally thought with adding a sample image file. then after with a phpqrcode image file.
It is still not succeeded can you please help me out.
Code:
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
date_default_timezone_set('Europe/London');
if (PHP_SAPI == 'cli')
die('This example should only be run from a Web Browser');
/** Include PHPExcel */
require_once dirname(__FILE__) . '/Classes/PHPExcel.php';
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
$gdImage = imagecreatefromjpeg('abstract_bg.jpg');
//Add a drawing to the worksheet
echo date('H:i:s') . " Add a drawing to the worksheet\n";
$objDrawing = new PHPExcel_Worksheet_MemoryDrawing();
$objDrawing->setName('Sample image');$objDrawing->setDescription('Sample image');
$objDrawing->setImageResource($gdImage);
$objDrawing->setRenderingFunction(PHPExcel_Worksheet_MemoryDrawing::RENDERING_JPEG);
$objDrawing->setMimeType(PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_DEFAULT);
$objDrawing->setHeight(150);
$objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
//$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
// Set document properties
$objPHPExcel->getProperties()->setCreator("Jimson Jose")
->setLastModifiedBy("Jimson Jose")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("For minimizing work force by jimson, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Rewards");
// Add some data
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Hello')
->setCellValue('B2', 'world!')
->setCellValue('C1', 'Hello')
->setCellValue('D2', 'world!');
// Miscellaneous glyphs, UTF-8
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A4', 'Miscellaneous glyphs')
->setCellValue('A5', 'éàèùâêîôûëïüÿäöüç');
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Simple');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel2007)
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="01simple.xlsx"');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
exit;
?>

When generating a file, you should make no debug output like
echo date('H:i:s') . " Add a drawing to the worksheet\n";
because it corrupts binary output.
If you remove this line, your code will work.
<?php
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
date_default_timezone_set('Europe/London');
if (PHP_SAPI == 'cli')
die('This example should only be run from a Web Browser');
/** Include PHPExcel */
require_once dirname(__FILE__) . '/Classes/PHPExcel.php';
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
$gdImage = imagecreatefromjpeg('abstract_bg.jpg');
//Add a drawing to the worksheet
$objDrawing = new PHPExcel_Worksheet_MemoryDrawing();
$objDrawing->setName('Sample image');$objDrawing->setDescription('Sample image');
$objDrawing->setImageResource($gdImage);
$objDrawing->setRenderingFunction(PHPExcel_Worksheet_MemoryDrawing::RENDERING_JPEG);
$objDrawing->setMimeType(PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_DEFAULT);
$objDrawing->setHeight(150);
$objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
//$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
// Set document properties
$objPHPExcel->getProperties()->setCreator("Jimson Jose")
->setLastModifiedBy("Jimson Jose")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("For minimizing work force by jimson, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Rewards");
// Add some data
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Hello')
->setCellValue('B2', 'world!')
->setCellValue('C1', 'Hello')
->setCellValue('D2', 'world!');
// Miscellaneous glyphs, UTF-8
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A4', 'Miscellaneous glyphs')
->setCellValue('A5', 'éàèùâêîôûëïüÿäöüç');
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Simple');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel2007)
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="01simple.xlsx"');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
exit;
?>
I would also recommend removing error reporting from this script:
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);

PHPExcel download excel file

have a problem to download excel file. When im saving on server its worked ok. But when i try to download things goes wrong
enter code hererequire_once('Classes/PHPExcel.php');
$cacheMethod = PHPExcel_CachedObjectStorageFactory:: cache_to_phpTemp;
$cacheSettings = array( ' memoryCacheSize ' => '1024MB');
ini_set("memory_limit","-1");
ini_set('max_execution_time', 13600);
PHPExcel_Settings::setCacheStorageMethod($cacheMethod, $cacheSettings);
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("Techizer")
->setLastModifiedBy("Techizer")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setCategory("Test result file");
if($file=="employer")
{
// Rename worksheet
$file = 'employer';
$objPHPExcel->getActiveSheet()->setTitle($file);
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1','Employer Name')
->setCellValue('B1','Emp ID')
->setCellValue('C1','Designation')
->setCellValue('D1','Zone')
->setCellValue('E1','Password');
$query = $this->session->userdata('employ');
$query = preg_replace('/LIMIT.*/', '', $query);
$res = $this->common_model->execute_query($query);
$row = 2;
foreach($res as $result)
{
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A'.$row,$result->profile_name)
->setCellValue('B'.$row,$result->profile_empid)
->setCellValue('C'.$row,$result->profile_desig)
->setCellValue('D'.$row,$result->profile_zone)
->setCellValue('E'.$row,$result->profile_pass);
$row++;
}
header('Content-Disposition: attachment;filename=Employer list'.date("Y-m-d").'.xls');
}
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel5)
header('Content-Type: application/vnd.ms-excel');
//header('Content-Disposition: attachment;filename=report.xls');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
exit;
it gives an excel file with this content:
PK–jGG’D²Xð[Content_Types].xml­”MNÃ0…÷œ"ò%nY

PHPExcel will download empty file

I'm trying to download my excel file with PHPExcel and it will download a file..but it's empty..! Basically I tried to modify the 01simple.php example (which works fine when the file is saved into the server) to download the file. But it is an empty file. I read few examples and topics around but still I'm a bit confused. this is my code. thank you
<?php
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
date_default_timezone_set('Europe/London');
/*
if (PHP_SAPI == 'cli')
die('This example should only be run from a Web Browser');*/
/** Include PHPExcel */
require_once dirname(__FILE__) . '/PHPExcel/Classes/PHPExcel.php';
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("at")
->setLastModifiedBy("At")
->setTitle("title")
->setSubject("Libro ")
->setDescription("Libro")
->setKeywords("excel openxml php")
->setCategory("At");
// Add some data
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Hello')
->setCellValue('B2', 'world!')
->setCellValue('C1', 'Hello')
->setCellValue('D2', 'world!');
// Miscellaneous glyphs, UTF-8
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A4', 'Miscellaneous glyphs')
->setCellValue('A5', 'éàèùâêîôûëïüÿäöüç');
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Libro Soci aa. 2015');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel2007)
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="Libro Soci 2015.xlsx"');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
exit;
solved by adding ob_end_clean at the end of the sheet just output

How to make the column number in PHP Excel

As the simple php excel we get the function setCellvalue('A1','product').But i wanted to make this column to change dynamically by placing it in loop.MY code is given below
<?php
/**
* Created by PhpStorm.
* User: Anurag
* Date: 3/9/14
* Time: 6:09 PM
*/
$Selected_data=$_REQUEST['data'];
/*
echo'<pre>';
print_r($Selected_data);
echo'<pre>';
*/
$Parse_Selected_data=json_decode($Selected_data,TRUE);
/*
echo'<pre>';
print_r($Parse_Selected_data);
echo'<pre>';
*/
$row_count=$Parse_Selected_data[0]['row_count'];
//echo($row_count);
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
date_default_timezone_set('Europe/London');
if (PHP_SAPI == 'cli')
die('This example should only be run from a Web Browser');
/** Include PHPExcel */
require('Excel/PHPExcel.php');
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
->setLastModifiedBy("Maarten Balliauw")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Test result file");
/*
* Add the Items to the Excel sheet*/
//**************** SET THE HEADER ***********//
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue(chr(65),'S.NO');
//******************************* SET AUTO COLUMN WIDTH **************//
$objPHPExcel->getActiveSheet(0)->getColumnDimension('A')->setAutoSize(true);
$objPHPExcel->getActiveSheet(0)->getColumnDimension('B')->setAutoSize(true);
$objPHPExcel->getActiveSheet(0)->getColumnDimension('C')->setAutoSize(true);
$objPHPExcel->getActiveSheet(0)->getColumnDimension('D')->setAutoSize(true);
$objPHPExcel->getActiveSheet(0)->getColumnDimension('E')->setAutoSize(true);
$objPHPExcel->getActiveSheet(0)->getColumnDimension('F')->setAutoSize(true);
//**************** SET HE SIZE AND BOLD ****************************//
$objPHPExcel->getActiveSheet(0)->getStyle('A1')->getFont()->setBold(true)->setSize(14);
$objPHPExcel->getActiveSheet(0)->getStyle('B1')->getFont()->setBold(true)->setSize(14);
$objPHPExcel->getActiveSheet(0)->getStyle('C1')->getFont()->setBold(true)->setSize(14);
$objPHPExcel->getActiveSheet(0)->getStyle('D1')->getFont()->setBold(true)->setSize(14);
$objPHPExcel->getActiveSheet(0)->getStyle('E1')->getFont()->setBold(true)->setSize(14);
$objPHPExcel->getActiveSheet(0)->getStyle('F1')->getFont()->setBold(true)->setSize(14);
//***************** Add some data **************//
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A2', 'Hello')
->setCellValue('B2', 'world!')
->setCellValue('C2', 'Hello')
->setCellValue('D2', 'world!');
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Simple');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client’s web browser (Excel5)
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="01simple.xls"');
header('Cache-Control: max-age=0');
// If you're serving to IE 9, then the following may be needed
header('Cache-Control: max-age=1');
// If you're serving to IE over SSL, then the following may be needed
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
exit;
?>
Please let me know how to get it done.

Try this..
//$i = asci value i.e. 65 to any column asci
$cell=chr($i).$num; // u can dynamically change the number also.
$objWorksheet->setCellValue($cell , 'Comments:');

If you have more than A-Z columns you can use this function:
function getCellFromColnum($colNum) {
return ($colNum < 26 ? chr(65+$colNum) : chr(65+floor($colNum/26)-1) . chr(65+ ($colNum % 26)));
}

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