Library Mpdf (php): Set utf-8 and use WriteHTML with utf-8 - php

Question

I need help with the php Mpdf library. I am generating content for a pdf, it is in a div tag, and sent by jquery to the php server, where Mpdf is used to generate the final file.
In the generated pdf file the utf-8 characters go wrong, for example "generación" instead of "generación".
I detail how they are implemented:
HTML
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
Sending content for pdf (jquery)
$('#pdf').click(function() {
$.post(
base_url,
{
contenido_pdf: $("#div").html(),
},
function(datos) {
}
);
});
Reception content (PHP)
$this->pdf = new mPDF();
$this->pdf->allow_charset_conversion = true;
$this->pdf->charset_in = 'iso-8859-1';
$contenido_pdf = this->input->post('contenido_pdf');
$contenido_pdf_formateado = mb_convert_encoding($contenido_pdf, 'UTF-8', 'windows-1252');
$this->m_pdf->pdf->WriteHTML($contenido_pdf_formateado);
Other tested options:
1.
$this->pdf->charset_in = 'UTF-8';
Get error:
Severity: Notice --> iconv(): Detected an illegal character in input string
2.
$contenido_pdf_formateado = mb_convert_encoding($contenido_pdf, 'UTF-8', 'UTF-8');
or
3.
$contenido_pdf_formateado = utf8_encode($contenido_pdf);
Get incorrect characters, like the original case.
What is wrong or what is missing to see the text well? Thanks

Answer 1

Solution
$contenido_pdf_formateado = utf8_decode($contenido_pdf);
$this->m_pdf->pdf->WriteHTML($contenido_pdf_formateado);

Answer 2

I had used the mode on object creation
$mpdf = new Mpdf(['mode' => 'UTF-8']);
Use this if you are sure that your html is utf-8

Answer 3

A combination of this
$mpdf = new Mpdf(['mode' => 'UTF-8']);
and the below worked for me.
$mpdf->autoScriptToLang = true;
$mpdf->autoLangToFont = true;

Answer 4

the only thing you have to do to active utf-8 is to add a defult font :
i did this and worket very well so try it and let the others knows if it's a good solotion or not.
just add a defult font and see..
$mpdf = new \Mpdf\Mpdf([
'default_font_size' => 9,
'default_font' => 'Aegean.otf' ]);