QR-code printing

gistfile1.txt

function printSticker($game, $url) {
    global $StickersDir, $PrinterName;
    
    $qrUrl =  "https://chart.googleapis.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl=".
        urlencode($url);
        
    system("curl '$qrUrl' > $StickersDir/qr.png");
    
    $filename = $StickersDir . '/sticker_' . $game->game_id . '-' . $game->player . '.png';
    
    system("composite ../assets/sticker_blank.png $StickersDir/qr.png $filename");
    system("lpr -P $PrinterName $filename");
}