phpexcel not outputing anything - php

Question

Below is my simple test php. When I run this nothing at all happens.
require_once('/var/www/html/Classes/PHPExcel.php');
$excel = new PHPExcel();
$excel->setActiveSheetIndex(0)
->setCellValue('A1','Hello')
->setCellValue('B1','World');
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="/var/www/html/Examples/test.xlsx"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($excel, 'Excel2007');
$objWriter->save('php://output');
exit;
Any ideas of why this does not work. No redirect at all and not file either.

Answer 1

With skimming PHPEXCEL documentation sample something like the following could work :
<?php
date_default_timezone_set('America/Los_Angeles');
require_once('/var/www/html/Classes/PHPExcel.php');
$sheet = array(
array(
'a1 Hello',
'b1 World',
'c1 here',
'd1 test',
)
);
$doc = new PHPExcel();
$doc->setActiveSheetIndex(0);
$doc->getActiveSheet()->fromArray($sheet, null, 'A1');
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="your_name.xls"');
header('Cache-Control: max-age=0');
// Do your stuff here
$writer = PHPExcel_IOFactory::createWriter($doc, 'Excel5');
$writer->save('php://output');
?>
Important Note Dont kill the process by exit();