PHPExcel download as zip file - php

Question

I have this code and works fine downloading with excel file with PHPExcel and CI but I want to download it as zip file and inside of it is the excel file.
$header = array(
'foodgroup','energy','protein','fat','cho','calcium','iron','thiamin','niacin','vitamin_c'
,'vitamin_a',
);
require_once APPPATH."/third_party/PHPExcel.php";
$sheet = new PHPExcel();
$file = $this->dietary_model->getById($subject_id,'dietary_subject');
$filename = $file->name;
$this->load->helper('date');
$date = date('Y-m-d');
//1st Sheet
$users = $this->dietary_model->getdata($subject_id,'1');
$sheet->setActiveSheetIndex(0);
$activeSheet = $sheet->getActiveSheet();
$activeSheet->setTitle('Day 1');
$activeSheet->getStyle('A1:T1')->getFont()->setBold(true);
$activeSheet->fromArray($header, null, 'A1');
$activeSheet->fromArray($users,null, 'A2');
//2nd Sheet
$users2 = $this->dietary_model->getdata($subject_id,'2');
$sheet->createSheet();
$sheet->setActiveSheetIndex(1);
$activeSheet2 = $sheet->getActiveSheet(1);
$activeSheet2->setTitle('Day 2');
$activeSheet2->getStyle('A1:T1')->getFont()->setBold(true);
$activeSheet2->fromArray($header, null, 'A1');
$activeSheet2->fromArray($users2,null, 'A2');
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename='.$filename.' '.$date.'.xlsx');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($sheet, 'Excel2007');
echo '<script>console.log('.$objWriter.')</script>';
exit;

Answer 1

Try this:
$header = array(
'foodgroup','energy','protein','fat','cho','calcium','iron','thiamin','niacin','vitamin_c'
,'vitamin_a',
);
require_once APPPATH."/third_party/PHPExcel.php";
$sheet = new PHPExcel();
$file = $this->dietary_model->getById($subject_id,'dietary_subject');
$filename = $file->name;
$this->load->helper('date');
$date = date('Y-m-d');
//1st Sheet
$users = $this->dietary_model->getdata($subject_id,'1');
$sheet->setActiveSheetIndex(0);
$activeSheet = $sheet->getActiveSheet();
$activeSheet->setTitle('Day 1');
$activeSheet->getStyle('A1:T1')->getFont()->setBold(true);
$activeSheet->fromArray($header, null, 'A1');
$activeSheet->fromArray($users,null, 'A2');
//2nd Sheet
$users2 = $this->dietary_model->getdata($subject_id,'2');
$sheet->createSheet();
$sheet->setActiveSheetIndex(1);
$activeSheet2 = $sheet->getActiveSheet(1);
$activeSheet2->setTitle('Day 2');
$activeSheet2->getStyle('A1:T1')->getFont()->setBold(true);
$activeSheet2->fromArray($header, null, 'A1');
$activeSheet2->fromArray($users2,null, 'A2');
$objWriter = PHPExcel_IOFactory::createWriter($sheet, 'Excel2007');
$excel_file_tmp = tempnam("/tmp", 'your_prefix');
$objWriter->save($excel_file_tmp);
//zip
$zip_file_tmp = tempnam("/tmp", 'your_prefix');
$zip = new ZipArchive();
$zip->open($zip_file_tmp, ZipArchive::OVERWRITE);
$zip->addFile($excel_file_tmp, 'your_name.xlsx');
$zip->close();
//download
$download_filename = 'your_name.zip';
header("Content-Type: application/zip");
header("Content-Length: " . filesize($zip_file_tmp));
header("Content-Disposition: attachment; filename=\"" . $download_filename . "\"");
readfile($zip_file_tmp);
unlink($excel_file_tmp);
unlink($zip_file_tmp);