PHP在同一页面上显示两个QR码

Question

I am using this library to generate http://phpqrcode.sourceforge.net/ QR codes.

I am trying to display two barcodes on the same page using following linesl

    QRcode::png('My Name');
    QRcode::png($codeText);

My questions:

• Only one barcode is shown which is second one. No any error messages shown.
• Is it possible and normal to display the text under the QR code like I have seen in barcodes in case of it is not read by a reader for some reason, so the user still can read the text below the QR code?

Full code;

include('phpqrcode/qrlib.php');

//output image directly into browser, as PNG stream
QRcode::png('My Name');


//******************************************************************************************
$param = $_GET['id'];
//make sure script does not output anything!!! Otherwise it will break up PNG binary
ob_start("callback");

$codeText = 'New Fashion Shop '. $param;

$debugLog = ob_get_contents();
ob_end_clean();

QRcode::png($codeText);
//******************************************************************************************