DefHTMLHeaderByName doesn't seem to work mpdf - php

Question

I am trying to get a document generated on a php site. It is all working well but the last thing is to add a header to the top of every page after the title page. I have tried so many things and the closest I can get to what I want is the following (stripped down) code.
ob_start();
$mpdf = new Mpdf();
$mpdf->SetDisplayMode('fullpage');
$mpdf->bleedMargin = 0;
$mdpf->crossMarkMargin = 0;
$mpdf->cropMarkMargin = 0;
$mpdf->nonPrintMargin = 0;
// Home page and headers...
$html_header = 'Some Code here';
$mpdf->DefHTMLHeaderByName('PgHeader', $html_header);
$mpdf->AddPage();
$mpdf->Image('cover.jpg', 0, 0, 210, 297, 'jpg', '', true, false);
// Get the content of any pages we have
if($pdf_pages) {
foreach($pdf_pages as $key=>$pg) {
$mpdf->AddPageByArray(array(
'mgt' => '40',
'odd-header-name' => 'PgHeader'
));
$html .= 'the content from the loop';
// Write some HTML code:
$custom_sheet = file_get_contents('/custom.css');
$mpdf->WriteHTML($custom_sheet, 1);
$mpdf->WriteHTML($html, 2);
}
}
// Output a PDF file directly to the browser
$mpdf->Output('Name.pdf', 'I');
ob_end_flush();
I have tried changing the odd-header-name to html_PgHeader based on the documentation but in either case, I get the margin, all the content but the header never shows up. Why? Why is it not being assigned so I can call it in the AddPageByArray?

Answer 1

According to the documentation you need to prefix header/footer names with 'html_'
Try changing;
'odd-header-name' => 'PgHeader',
to;
'odd-header-name' => 'html_PgHeader',
reference here

Answer 2

To show header, you need to add odd-header-value option to AddPageByArray method with value 1.
ob_start();
$mpdf = new Mpdf();
$mpdf->SetDisplayMode('fullpage');
$mpdf->bleedMargin = 0;
$mdpf->crossMarkMargin = 0;
$mpdf->cropMarkMargin = 0;
$mpdf->nonPrintMargin = 0;
// Home page and headers...
$html_header = 'Some Code here';
$mpdf->DefHTMLHeaderByName('PgHeader', $html_header);
$mpdf->AddPage();
$mpdf->Image('cover.jpg', 0, 0, 210, 297, 'jpg', '', true, false);
$pdf_pages = array('key' => 'val');
// Get the content of any pages we have
if($pdf_pages) {
foreach($pdf_pages as $key=>$pg) {
$mpdf->AddPageByArray(array(
'mgt' => '40',
'odd-header-name' => 'PgHeader',
'odd-header-value' => 1,
));
$html .= 'the content from the loop';
// Write some HTML code:
$custom_sheet = file_get_contents('/custom.css');
$mpdf->WriteHTML($custom_sheet, 1);
$mpdf->WriteHTML($html, 2);
}
}
// Output a PDF file directly to the browser
$mpdf->Output('Name.pdf', 'I');
ob_end_flush();
Pt.II
If this, don't help, then try this scenario:
Open console and go to site's root path.
Create index.php file
Run composer require mpdf/mpdf (install composer, if you don't have it).
Paste this code to the index.php
<?php
require_once __DIR__ . '/vendor/autoload.php';
ob_start();
$mpdf = new \Mpdf\Mpdf();
/** same code from previous example here, except Mpdf init **/

Answer 3

Try something like this
#page {
header: header_name;
footer: footer_name;
}
It might help you.
Url: https://mpdf.github.io/headers-footers/headers-footers.html