<?php



/*

 * PHP QR Code encoder

 *

 * Common constants

 *

 * Based on libqrencode C library distributed under LGPL 2.1

 * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

 *

 * PHP QR Code is distributed under LGPL 3

 * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 3 of the License, or any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

 */

 

	// Encoding modes

	 

	define('QR_MODE_NUL', -1);

	define('QR_MODE_NUM', 0);

	define('QR_MODE_AN', 1);

	define('QR_MODE_8', 2);

	define('QR_MODE_KANJI', 3);

	define('QR_MODE_STRUCTURE', 4);



	// Levels of error correction.



	define('QR_ECLEVEL_L', 0);

	define('QR_ECLEVEL_M', 1);

	define('QR_ECLEVEL_Q', 2);

	define('QR_ECLEVEL_H', 3);

	

	// Supported output formats

	

	define('QR_FORMAT_TEXT', 0);

	define('QR_FORMAT_PNG',  1);

	

	class qrstr {

		public static function set(&$srctab, $x, $y, $repl, $replLen = false) {

			$srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));

		}

	}	