PHP 致命错误：未捕获错误：Class 在 C:\xampp\htdocs\server\pdf.php:5 中未找到“Mpdf\Mpdf”

Question

PHP Fatal error: Uncaught Error: Class "Mpdf\Mpdf" not found in C:\xampp\htdocs\server\pdf.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\server\pdf.php on line 5

PHP 8.1.3, PHP Intelephense v1.8.2

compser.json

{
"require": {
    "mpdf/mpdf": "^6.1"
      }
}

composer.lock

{
    "name": "mpdf/mpdf",
    "version": "v6.1.2",
    "source": {
    "type": "git",
    "url": "https://github.com/mpdf/mpdf.git",
    "reference": "da078bc2669d3f98553ac41f920ead4c17c951ad"
        },

pdf.php

<?php

require_once __DIR__ . '/pdf/autoload.php';

$mpdf = new \Mpdf\Mpdf;
$mpdf->WriteHTML('<h1>Hello world!</h1>');
$mpdf->Output();

What I am doing wrong? What I am not understanding?

Thank you for your help!

Answer 1

require path need update to:

require_once __DIR__ . '/vendor/autoload.php';

Make sure that the library exists at vendor if not run composer update

Answer 2

In 6.1, there is no \Mpdf\Mpdf class, that is in v7+. So use here new mPDF() ;

require_once __DIR__ . '/pdf/autoload.php';

$mpdf = new mPDF();
$mpdf->WriteHTML('<h1>Hello world!</h1>');
$mpdf->Output();

Answer 3

Laravel 8, got same error.

Just run the below in cmd then done.

composer require mpdf/mpdf