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<?php session_start();
include('phpqrcode/qrlib.php');
$param = $_GET['id']; // remember to sanitize that - it is user input!
// we need to be sure ours script does not output anything!!!
// otherwise it will break up PNG binary!
ob_start("callback");
// here DB request or some processing
$codeText = $param;
// end of processing here
$debugLog = ob_get_contents();
ob_end_clean();
// showoutputs image directly into browser, as PNG stream
QRcode::png($codeText, false, 'H', 4, 1);
//save file qrcode .png
$tempDir = '../upload_qrcode/';
$fileName = trim($_SESSION['stu_id']).'.png';
//$fileName = "6031060002".'.png';
$pngFilePath = $tempDir.$fileName;
$del=unlink($tempDir.$fileName);//ลบไฟส์ในโฟเดอร์ก่อน
QRcode::png($codeText,$pngFilePath, 'H', 4, 1); //saveไฟล์
?>