QR Code + Logo Generator

QRLogo.php

<?php
/**
 * QR Code + Logo Generator
 *
 * http://labs.nticompassinc.com
 */
$data = isset($_GET['data']) ? $_GET['data'] : 'http://labs.nticompassinc.com';
$size = isset($_GET['size']) ? $_GET['size'] : '200x200';
$logo = isset($_GET['logo']) ? $_GET['logo'] : FALSE;

header('Content-type: image/png');
// Get QR Code image from Google Chart API
// http://code.google.com/apis/chart/infographics/docs/qr_codes.html
$QR = imagecreatefrompng('https://chart.googleapis.com/chart?cht=qr&chld=H|1&chs='.$size.'&chl='.urlencode($data));
if($logo !== FALSE){
	$logo = imagecreatefromstring(file_get_contents($logo));

	$QR_width = imagesx($QR);
	$QR_height = imagesy($QR);
	
	$logo_width = imagesx($logo);
	$logo_height = imagesy($logo);
	
	// Scale logo to fit in the QR Code
	$logo_qr_width = $QR_width/3;
	$scale = $logo_width/$logo_qr_width;
	$logo_qr_height = $logo_height/$scale;
	
	imagecopyresampled($QR, $logo, $QR_width/3, $QR_height/3, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
}
imagepng($QR);
imagedestroy($QR);
?>

@nichtsooft The GD extension doesn't have built-in SVG export support, but there are probably external libraries that support this.

Though, since this code uses chart.googleapis.com to get QR images, converting to an SVG won't really give you what you expect.

I'd suggest finding an API/library that can generate QR code SVGs directly.

Thank you for the clarification!!! 👍🏻