Add a BSD licensed QR code library

resources/qr_code/QRMode.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * This file is part of the phpQr package
+ *
+ * See @see QRCode class for description of package and license.
+ */
+
+/**
+ * QRCode mode enumeration
+ * 
+ * @author Maik Greubel <greubel@nkey.de>
+ * @package phpQr
+ */
+abstract class QRMode
+{
+  const MODE_NUMBER = 1;
+  const MODE_ALPHA_NUM = 2;
+  const MODE_8BIT_BYTE = 4;
+  const MODE_KANJI = 8;
+}