How to create docx file and download it using PhpWord - codeigniter-3

Question

Hi I always got error when trying to create docx file and I want to download it directly. My browser is stuck on ERR_INVALID_RESPONSE. I'm using CodeIgniter framework by the way. Here is the code.
<?php
use PhpOffice\PhpWord\PhpWord;
use PhpOffice\PhpWord\Writer\Word2007;
class Test extends MY_Controller{
public function create()
{
$phpWord = new PhpWord();
$section = $phpWord->addSection();
$section->addText('Hello World!');
$file = 'HelloWorld.docx';
header("Content-Description: File Transfer");
header('Content-Disposition: attachment; filename="' . $file . '"');
header('Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document');
header('Content-Transfer-Encoding: binary');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Expires: 0');
$xmlWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord, 'Word2007');
$xmlWriter->save("php://output");
}
}
This code is just taken from the example in the PhpWord docs, but somehow it doesn't work. No error just ERR_INVALID_RESPONSE on the browser. What did I miss?

Answer 1

After a couple hours digging, I finally found the solution for my problem. The problem exists because it relates to temporary folder. So what I have to do is 1. setting the path where the file temporarily saved and 2. I have to tell Phpword that it should use that path to store generated file.
$path = './uploads/tmp'; // Set the temporary path
\PhpOffice\PhpWord\Settings::setTempDir($path); // Tell Phpword where the temporary path is
So this is the complete code
<?php
use PhpOffice\PhpWord\PhpWord;
use PhpOffice\PhpWord\Writer\Word2007;
class Test extends MY_Controller{
public function create()
{
$phpWord = new PhpWord();
$section = $phpWord->addSection();
$section->addText('Hello World!');
$path = './uploads/tmp'; // Set the temporary path
\PhpOffice\PhpWord\Settings::setTempDir($path); // Tell Phpword where the temporary path is
$file = 'HelloWorld.docx';
header("Content-Description: File Transfer");
header('Content-Disposition: attachment; filename="' . $file . '"');
header('Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document');
header('Content-Transfer-Encoding: binary');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Expires: 0');
$xmlWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord, 'Word2007');
$xmlWriter->save("php://output");
}
}
Hope it can help those who get the same problem