php fpdf add qr code
<?php
//include the libraries
require_once("fpdf17/fpdf.php");
require_once("phpqrcode/qrlib.php");
//create a QR Code and save it as a png image file named test.png
QRcode::png("coded number here","test.png");
//pdf stuff
$pdf = new FPDF('P','mm','A4');
$pdf->AddPage();
//this is the first method
$pdf->Image("http://localhost/pdf/qr_generator.php?code=content here", 10, 10, 20, 20, "png");
//this is the second method
$pdf->Image("test.png", 40, 10, 20, 20, "png");
//and absolutely don't forget this one
$pdf->Output();