<?php

//============================================================+

// File name   : qrcode.php

// Begin       : 2010-03-22

// Last Update : 2010-03-29

// Version     : 1.0.002

// License     : GNU LGPL v.3 (http://www.gnu.org/copyleft/lesser.html)

// 	----------------------------------------------------------------------------

//

// 	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

//  or browse http://www.gnu.org/copyleft/lesser.html

//

//  ----------------------------------------------------------------------------

//

// DESCRIPTION :

//

// Class to create QR-code arrays for TCPDF class.

// QR Code symbol is a 2D barcode that can be scanned by

// handy terminals such as a mobile phone with CCD.

// The capacity of QR Code is up to 7000 digits or 4000

// characters, and has high robustness.

// This class supports QR Code model 2, described in

// JIS (Japanese Industrial Standards) X0510:2004

// or ISO/IEC 18004.

// Currently the following features are not supported:

// ECI and FNC1 mode, Micro QR Code, QR Code model 1,

// Structured mode.

//

// This class is derived from the following projects:

// ---------------------------------------------------------

// "PHP QR Code encoder"

// License: GNU-LGPLv3

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

// http://phpqrcode.sourceforge.net/

// https://sourceforge.net/projects/phpqrcode/

//

// The "PHP QR Code encoder" is based on

// "C libqrencode library" (ver. 3.1.1)

// License: GNU-LGPL 2.1

// Copyright (C) 2006-2010 by Kentaro Fukuchi

// http://megaui.net/fukuchi/works/qrencode/index.en.html

//

// Reed-Solomon code encoder is written by Phil Karn, KA9Q.

// Copyright (C) 2002-2006 Phil Karn, KA9Q

//

// QR Code is registered trademark of DENSO WAVE INCORPORATED

// http://www.denso-wave.com/qrcode/index-e.html

// ---------------------------------------------------------

//

// Author: Nicola Asuni

//

// (c) Copyright 2010:

//               Nicola Asuni

//               Tecnick.com S.r.l.

//               Via della Pace, 11

//               09044 Quartucciu (CA)

//               ITALY

//               www.tecnick.com

//               info@tecnick.com

//============================================================+



/**

 * Class to create QR-code arrays for TCPDF class.

 * QR Code symbol is a 2D barcode that can be scanned by handy terminals such as a mobile phone with CCD.

 * The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.

 * This class supports QR Code model 2, described in JIS (Japanese Industrial Standards) X0510:2004 or ISO/IEC 18004.

 * Currently the following features are not supported: ECI and FNC1 mode, Micro QR Code, QR Code model 1, Structured mode.

 *

 * This class is derived from "PHP QR Code encoder" by Dominik Dzienia (http://phpqrcode.sourceforge.net/) based on "libqrencode C library 3.1.1." by Kentaro Fukuchi (http://megaui.net/fukuchi/works/qrencode/index.en.html), contains Reed-Solomon code written by Phil Karn, KA9Q. QR Code is registered trademark of DENSO WAVE INCORPORATED (http://www.denso-wave.com/qrcode/index-e.html).

 * Please read comments on this class source file for full copyright and license information.

 *

 * @package com.tecnick.tcpdf

 * @abstract Class for generating QR-code array for TCPDF.

 * @author Nicola Asuni

 * @copyright 2010 Nicola Asuni - Tecnick.com S.r.l (www.tecnick.com) Via Della Pace, 11 - 09044 - Quartucciu (CA) - ITALY - www.tecnick.com - info@tecnick.com

 * @link http://www.tcpdf.org

 * @license http://www.gnu.org/copyleft/lesser.html LGPL

 * @version 1.0.002

 */



// definitions

if (!defined('QRCODEDEFS')) {



	/**

	 * Indicate that definitions for this class are set

	 */

	define('QRCODEDEFS', true);



	// -----------------------------------------------------



	// Encoding modes (characters which can be encoded in QRcode)



	/**

	 * Encoding mode

	 */

	define('QR_MODE_NL', -1);



	/**

	 * Encoding mode numeric (0-9). 3 characters are encoded to 10bit length. In theory, 7089 characters or less can be stored in a QRcode.

	 */

	define('QR_MODE_NM', 0);



	/**

	 * Encoding mode alphanumeric (0-9A-Z $%*+-./:) 45characters. 2 characters are encoded to 11bit length. In theory, 4296 characters or less can be stored in a QRcode.

	 */

	define('QR_MODE_AN', 1);



	/**

	 * Encoding mode 8bit byte data. In theory, 2953 characters or less can be stored in a QRcode.

	 */

	define('QR_MODE_8B', 2);



	/**

	 * Encoding mode KANJI. A KANJI character (multibyte character) is encoded to 13bit length. In theory, 1817 characters or less can be stored in a QRcode.

	 */

	define('QR_MODE_KJ', 3);



	/**

	 * Encoding mode STRUCTURED (currently unsupported)

	 */

	define('QR_MODE_ST', 4);



	// -----------------------------------------------------



	// Levels of error correction.

	// QRcode has a function of an error correcting for miss reading that white is black.

	// Error correcting is defined in 4 level as below.



	/**

	 * Error correction level L : About 7% or less errors can be corrected.

	 */

	define('QR_ECLEVEL_L', 0);



	/**

	 * Error correction level M : About 15% or less errors can be corrected.

	 */

	define('QR_ECLEVEL_M', 1);



	/**

	 * Error correction level Q : About 25% or less errors can be corrected.

	 */

	define('QR_ECLEVEL_Q', 2);



	/**

	 * Error correction level H : About 30% or less errors can be corrected.

	 */

	define('QR_ECLEVEL_H', 3);



	// -----------------------------------------------------



	// Version. Size of QRcode is defined as version.

	// Version is from 1 to 40.

	// Version 1 is 21*21 matrix. And 4 modules increases whenever 1 version increases.

	// So version 40 is 177*177 matrix.



	/**

	 * Maximum QR Code version.

	 */

	define('QRSPEC_VERSION_MAX', 40);



	/**

	 * Maximum matrix size for maximum version (version 40 is 177*177 matrix).

	 */

    define('QRSPEC_WIDTH_MAX', 177);



	// -----------------------------------------------------



	/**

	 * Matrix index to get width from $capacity array.

	 */

    define('QRCAP_WIDTH',    0);



    /**

	 * Matrix index to get number of words from $capacity array.

	 */

    define('QRCAP_WORDS',    1);



    /**

	 * Matrix index to get remainder from $capacity array.

	 */

    define('QRCAP_REMINDER', 2);



    /**

	 * Matrix index to get error correction level from $capacity array.

	 */

    define('QRCAP_EC',       3);



	// -----------------------------------------------------



	// Structure (currently usupported)



	/**

	 * Number of header bits for structured mode

	 */

    define('STRUCTURE_HEADER_BITS',  20);



    /**

	 * Max number of symbols for structured mode

	 */

    define('MAX_STRUCTURED_SYMBOLS', 16);



	// -----------------------------------------------------



    // Masks



    /**

	 * Down point base value for case 1 mask pattern (concatenation of same color in a line or a column)

	 */

    define('N1',  3);



    /**

	 * Down point base value for case 2 mask pattern (module block of same color)

	 */

	define('N2',  3);



    /**

	 * Down point base value for case 3 mask pattern (1:1:3:1:1(dark:bright:dark:bright:dark)pattern in a line or a column)

	 */

	define('N3', 40);



    /**

	 * Down point base value for case 4 mask pattern (ration of dark modules in whole)

	 */

	define('N4', 10);



	// -----------------------------------------------------



	// Optimization settings



	/**

	 * if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code

	 */

	define('QR_FIND_BEST_MASK', true);



	/**

	 * if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly

	 */

	define('QR_FIND_FROM_RANDOM', 2);



	/**

	 * when QR_FIND_BEST_MASK === false

	 */

	define('QR_DEFAULT_MASK', 2);



	// -----------------------------------------------------



} // end of definitions



// #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#



if (!class_exists('QRcode', false)) {



	// for compaibility with PHP4

	if (!function_exists('str_split')) {

    	/**

    	 * Convert a string to an array (needed for PHP4 compatibility)

    	 * @param string $string The input string.

    	 * @param int $split_length Maximum length of the chunk.

    	 * @return  If the optional split_length  parameter is specified, the returned array will be broken down into chunks with each being split_length  in length, otherwise each chunk will be one character in length. FALSE is returned if split_length is less than 1. If the split_length length exceeds the length of string , the entire string is returned as the first (and only) array element.

    	 */

		function str_split($string, $split_length=1) {

			if ((strlen($string) > $split_length) OR (!$split_length)) {

				do {

					$c = strlen($string);

					$parts[] = substr($string, 0, $split_length);

					$string = substr($string, $split_length);

				} while ($string !== false);

			} else {

				$parts = array($string);

			}

			return $parts;

		}

	}



	// #####################################################



	/**

	 * Class to create QR-code arrays for TCPDF class.

	 * QR Code symbol is a 2D barcode that can be scanned by handy terminals such as a mobile phone with CCD.

	 * The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.

	 * This class supports QR Code model 2, described in JIS (Japanese Industrial Standards) X0510:2004 or ISO/IEC 18004.

	 * Currently the following features are not supported: ECI and FNC1 mode, Micro QR Code, QR Code model 1, Structured mode.

	 *

	 * This class is derived from "PHP QR Code encoder" by Dominik Dzienia (http://phpqrcode.sourceforge.net/) based on "libqrencode C library 3.1.1." by Kentaro Fukuchi (http://megaui.net/fukuchi/works/qrencode/index.en.html), contains Reed-Solomon code written by Phil Karn, KA9Q. QR Code is registered trademark of DENSO WAVE INCORPORATED (http://www.denso-wave.com/qrcode/index-e.html).

	 * Please read comments on this class source file for full copyright and license information.

	 *

	 * @name QRcode

	 * @package com.tecnick.tcpdf

	 * @abstract Class for generating QR-code array for TCPDF.

	 * @author Nicola Asuni

	 * @copyright 2010 Nicola Asuni - Tecnick.com S.r.l (www.tecnick.com) Via Della Pace, 11 - 09044 - Quartucciu (CA) - ITALY - www.tecnick.com - info@tecnick.com

	 * @link http://www.tcpdf.org

	 * @license http://www.gnu.org/copyleft/lesser.html LGPL

	 * @version 1.0.002

	 */

	class QRcode {



		/**

		 * @var barcode array to be returned which is readable by TCPDF

		 * @access protected

		 */

		protected $barcode_array = array();



		/**

		 * @var QR code version. Size of QRcode is defined as version. Version is from 1 to 40. Version 1 is 21*21 matrix. And 4 modules increases whenever 1 version increases. So version 40 is 177*177 matrix.

		 * @access protected

		 */

		protected $version = 0;



		/**

		 * @var Levels of error correction. See definitions for possible values.

		 * @access protected

		 */

		protected $level = QR_ECLEVEL_L;



		/**

		 * @var Encoding mode

		 * @access protected

		 */

		protected $hint = QR_MODE_8B;



		/**

		 * @var if true the input string will be converted to uppercase

		 * @access protected

		 */

		protected $casesensitive = true;



		/**

		 * @var structured QR code (not supported yet)

		 * @access protected

		 */

		protected $structured = 0;



		/**

		 * @var mask data

		 * @access protected

		 */

		protected $data;



		// FrameFiller



		/**

		 * @var width

		 * @access protected

		 */

		protected $width;



		/**

		 * @var frame

		 * @access protected

		 */

		protected $frame;



		/**

		 * @var X position of bit

		 * @access protected

		 */

		protected $x;



		/**

		 * @var Y position of bit

		 * @access protected

		 */

		protected $y;



		/**

		 * @var direction

		 * @access protected

		 */

		protected $dir;



		/**

		 * @var single bit

		 * @access protected

		 */

		protected $bit;



		// ---- QRrawcode ----



		/**

		 * @var data code

		 * @access protected

		 */

		protected $datacode = array();



		/**

		 * @var error correction code

		 * @access protected

		 */

		protected $ecccode = array();



		/**

		 * @var blocks

		 * @access protected

		 */

		protected $blocks;



		/**

		 * @var Reed-Solomon blocks

		 * @access protected

		 */

		protected $rsblocks = array(); //of RSblock



		/**

		 * @var counter

		 * @access protected

		 */

		protected $count;



		/**

		 * @var data length

		 * @access protected

		 */

		protected $dataLength;



		/**

		 * @var error correction length

		 * @access protected

		 */

		protected $eccLength;



		/**

		 * @var b1

		 * @access protected

		 */

		protected $b1;



		// ---- QRmask ----



		/**

		 * @var run length

		 * @access protected

		 */

		protected $runLength = array();



		// ---- QRsplit ----



		/**

		 * @var input data string

		 * @access protected

		 */

		protected $dataStr = '';



		/**

		 * @var input items

		 * @access protected

		 */

		protected $items;



		// Reed-Solomon items



		/**

		 * @var Reed-Solomon items

		 * @access protected

		 */

		protected $rsitems = array();



		/**

		 * @var array of frames

		 * @access protected

		 */

		protected $frames = array();



		/**

		 * @var alphabet-numeric convesion table

		 * @access protected

		 */

		protected $anTable = array(

			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //

			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //

			36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43, //

			 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 44, -1, -1, -1, -1, -1, //

			-1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, //

			25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, //

			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //

			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1  //

			);



		/**

		 * @var array Table of the capacity of symbols

		 * See Table 1 (pp.13) and Table 12-16 (pp.30-36), JIS X0510:2004.

		 * @access protected

		 */

		protected $capacity = array(

			array(  0,    0, 0, array(   0,    0,    0,    0)), //

			array( 21,   26, 0, array(   7,   10,   13,   17)), //  1

			array( 25,   44, 7, array(  10,   16,   22,   28)), //

			array( 29,   70, 7, array(  15,   26,   36,   44)), //

			array( 33,  100, 7, array(  20,   36,   52,   64)), //

			array( 37,  134, 7, array(  26,   48,   72,   88)), //  5

			array( 41,  172, 7, array(  36,   64,   96,  112)), //

			array( 45,  196, 0, array(  40,   72,  108,  130)), //

			array( 49,  242, 0, array(  48,   88,  132,  156)), //

			array( 53,  292, 0, array(  60,  110,  160,  192)), //

			array( 57,  346, 0, array(  72,  130,  192,  224)), // 10

			array( 61,  404, 0, array(  80,  150,  224,  264)), //

			array( 65,  466, 0, array(  96,  176,  260,  308)), //

			array( 69,  532, 0, array( 104,  198,  288,  352)), //

			array( 73,  581, 3, array( 120,  216,  320,  384)), //

			array( 77,  655, 3, array( 132,  240,  360,  432)), // 15

			array( 81,  733, 3, array( 144,  280,  408,  480)), //

			array( 85,  815, 3, array( 168,  308,  448,  532)), //

			array( 89,  901, 3, array( 180,  338,  504,  588)), //

			array( 93,  991, 3, array( 196,  364,  546,  650)), //

			array( 97, 1085, 3, array( 224,  416,  600,  700)), // 20

			array(101, 1156, 4, array( 224,  442,  644,  750)), //

			array(105, 1258, 4, array( 252,  476,  690,  816)), //

			array(109, 1364, 4, array( 270,  504,  750,  900)), //

			array(113, 1474, 4, array( 300,  560,  810,  960)), //

			array(117, 1588, 4, array( 312,  588,  870, 1050)), // 25

			array(121, 1706, 4, array( 336,  644,  952, 1110)), //

			array(125, 1828, 4, array( 360,  700, 1020, 1200)), //

			array(129, 1921, 3, array( 390,  728, 1050, 1260)), //

			array(133, 2051, 3, array( 420,  784, 1140, 1350)), //

			array(137, 2185, 3, array( 450,  812, 1200, 1440)), // 30

			array(141, 2323, 3, array( 480,  868, 1290, 1530)), //

			array(145, 2465, 3, array( 510,  924, 1350, 1620)), //

			array(149, 2611, 3, array( 540,  980, 1440, 1710)), //

			array(153, 2761, 3, array( 570, 1036, 1530, 1800)), //

			array(157, 2876, 0, array( 570, 1064, 1590, 1890)), // 35

			array(161, 3034, 0, array( 600, 1120, 1680, 1980)), //

			array(165, 3196, 0, array( 630, 1204, 1770, 2100)), //

			array(169, 3362, 0, array( 660, 1260, 1860, 2220)), //

			array(173, 3532, 0, array( 720, 1316, 1950, 2310)), //

			array(177, 3706, 0, array( 750, 1372, 2040, 2430))  // 40

		);



		/**

		 * @var array Length indicator

		 * @access protected

		 */

		protected $lengthTableBits = array(

			array(10, 12, 14),

			array( 9, 11, 13),

			array( 8, 16, 16),

			array( 8, 10, 12)

		);



		/**

		 * @var array Table of the error correction code (Reed-Solomon block)

		 * See Table 12-16 (pp.30-36), JIS X0510:2004.

		 * @access protected

		 */

		protected $eccTable = array(

			array(array( 0,  0), array( 0,  0), array( 0,  0), array( 0,  0)), //

			array(array( 1,  0), array( 1,  0), array( 1,  0), array( 1,  0)), //  1

			array(array( 1,  0), array( 1,  0), array( 1,  0), array( 1,  0)), //

			array(array( 1,  0), array( 1,  0), array( 2,  0), array( 2,  0)), //

			array(array( 1,  0), array( 2,  0), array( 2,  0), array( 4,  0)), //

			array(array( 1,  0), array( 2,  0), array( 2,  2), array( 2,  2)), //  5

			array(array( 2,  0), array( 4,  0), array( 4,  0), array( 4,  0)), //

			array(array( 2,  0), array( 4,  0), array( 2,  4), array( 4,  1)), //

			array(array( 2,  0), array( 2,  2), array( 4,  2), array( 4,  2)), //

			array(array( 2,  0), array( 3,  2), array( 4,  4), array( 4,  4)), //

			array(array( 2,  2), array( 4,  1), array( 6,  2), array( 6,  2)), // 10

			array(array( 4,  0), array( 1,  4), array( 4,  4), array( 3,  8)), //

			array(array( 2,  2), array( 6,  2), array( 4,  6), array( 7,  4)), //

			array(array( 4,  0), array( 8,  1), array( 8,  4), array(12,  4)), //

			array(array( 3,  1), array( 4,  5), array(11,  5), array(11,  5)), //

			array(array( 5,  1), array( 5,  5), array( 5,  7), array(11,  7)), // 15

			array(array( 5,  1), array( 7,  3), array(15,  2), array( 3, 13)), //

			array(array( 1,  5), array(10,  1), array( 1, 15), array( 2, 17)), //

			array(array( 5,  1), array( 9,  4), array(17,  1), array( 2, 19)), //

			array(array( 3,  4), array( 3, 11), array(17,  4), array( 9, 16)), //

			array(array( 3,  5), array( 3, 13), array(15,  5), array(15, 10)), // 20

			array(array( 4,  4), array(17,  0), array(17,  6), array(19,  6)), //

			array(array( 2,  7), array(17,  0), array( 7, 16), array(34,  0)), //

			array(array( 4,  5), array( 4, 14), array(11, 14), array(16, 14)), //

			array(array( 6,  4), array( 6, 14), array(11, 16), array(30,  2)), //

			array(array( 8,  4), array( 8, 13), array( 7, 22), array(22, 13)), // 25

			array(array(10,  2), array(19,  4), array(28,  6), array(33,  4)), //

			array(array( 8,  4), array(22,  3), array( 8, 26), array(12, 28)), //

			array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)), //

			array(array( 7,  7), array(21,  7), array( 1, 37), array(19, 26)), //

			array(array( 5, 10), array(19, 10), array(15, 25), array(23, 25)), // 30

			array(array(13,  3), array( 2, 29), array(42,  1), array(23, 28)), //

			array(array(17,  0), array(10, 23), array(10, 35), array(19, 35)), //

			array(array(17,  1), array(14, 21), array(29, 19), array(11, 46)), //

			array(array(13,  6), array(14, 23), array(44,  7), array(59,  1)), //

			array(array(12,  7), array(12, 26), array(39, 14), array(22, 41)), // 35

			array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)), //

			array(array(17,  4), array(29, 14), array(49, 10), array(24, 46)), //

			array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)), //

			array(array(20,  4), array(40,  7), array(43, 22), array(10, 67)), //

			array(array(19,  6), array(18, 31), array(34, 34), array(20, 61))  // 40

		);



		/**

		 * @var array Positions of alignment patterns.

		 * This array includes only the second and the third position of the alignment patterns. Rest of them can be calculated from the distance between them.

		 * See Table 1 in Appendix E (pp.71) of JIS X0510:2004.

		 * @access protected

		 */

		protected $alignmentPattern = array(

			array( 0,  0),

			array( 0,  0), array(18,  0), array(22,  0), array(26,  0), array(30,  0), //  1- 5

			array(34,  0), array(22, 38), array(24, 42), array(26, 46), array(28, 50), //  6-10

			array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48), // 11-15

			array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62), // 16-20

			array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58), // 21-25

			array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52), // 26-30

			array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54), // 31-35

			array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58)  // 35-40

		);



		/**

		 * @var array Version information pattern (BCH coded).

		 * See Table 1 in Appendix D (pp.68) of JIS X0510:2004.

		 * size: [QRSPEC_VERSION_MAX - 6]

		 * @access protected

		 */

		protected $versionPattern = array(

			0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d, //

			0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9, //

			0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75, //

			0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64, //

			0x27541, 0x28c69

		);



		/**

		 * @var array Format information

		 * @access protected

		 */

		protected $formatInfo = array(

			array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976), //

			array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0), //

			array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed), //

			array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b)  //

		);





		// -------------------------------------------------

		// -------------------------------------------------





		/**

		 * This is the class constructor.

		 * Creates a QRcode object

		 * @param string $code code to represent using QRcode

		 * @param string $eclevel error level: <ul><li>L : About 7% or less errors can be corrected.</li><li>M : About 15% or less errors can be corrected.</li><li>Q : About 25% or less errors can be corrected.</li><li>H : About 30% or less errors can be corrected.</li></ul>

		 * @access public

		 * @since 1.0.000

		 */

		public function __construct($code, $eclevel = 'L') {

			$barcode_array = array();

			if ((is_null($code)) OR ($code == '\0') OR ($code == '')) {

				return false;

			}

			// set error correction level

			$this->level = array_search($eclevel, array('L', 'M', 'Q', 'H'));

			if ($this->level === false) {

				$this->level = QR_ECLEVEL_L;

			}

			if (($this->hint != QR_MODE_8B) AND ($this->hint != QR_MODE_KJ)) {

				return false;

			}

			if (($this->version < 0) OR ($this->version > QRSPEC_VERSION_MAX)) {

				return false;

			}

			$this->items = array();

			$this->encodeString($code);

			$qrTab = $this->binarize($this->data);

			$size = count($qrTab);

			$barcode_array['num_rows'] = $size;

			$barcode_array['num_cols'] = $size;

			$barcode_array['bcode'] = array();

			foreach ($qrTab as $line) {

				$arrAdd = array();

				foreach (str_split($line) as $char) {

					$arrAdd[] = ($char=='1')?1:0;

				}

				$barcode_array['bcode'][] = $arrAdd;

			}

			$this->barcode_array = $barcode_array;

		}



		/**

		 * Returns a barcode array which is readable by TCPDF

		 * @return array barcode array readable by TCPDF;

		 * @access public

		 */

		public function getBarcodeArray() {

			return $this->barcode_array;

		}



		/**

		 * Convert the frame in binary form

		 * @param array $frame array to binarize

		 * @return array frame in binary form

		 */

		protected function binarize($frame) {

			$len = count($frame);

			// the frame is square (width = height)

			foreach ($frame as &$frameLine) {

				for ($i=0; $i<$len; $i++) {

					$frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';

				}

			}

			return $frame;

		}



		/**

		 * Encode the input string to QR code

		 * @param string $string input string to encode

		 */

		protected function encodeString($string) {

			$this->dataStr = $string;

			if (!$this->casesensitive) {

				$this->toUpper();

			}

			$ret = $this->splitString();

			if ($ret < 0) {

				return NULL;

			}

			$this->encodeMask(-1);

		}



		/**

		 * Encode mask

		 * @param int $mask masking mode

		 */

		protected function encodeMask($mask) {

			$spec = array(0, 0, 0, 0, 0);

			$this->datacode = $this->getByteStream($this->items);

			if (is_null($this->datacode)) {

				return NULL;

			}

			$spec = $this->getEccSpec($this->version, $this->level, $spec);

			$this->b1 = $this->rsBlockNum1($spec);

			$this->dataLength = $this->rsDataLength($spec);

			$this->eccLength = $this->rsEccLength($spec);

			$this->ecccode = array_fill(0, $this->eccLength, 0);

			$this->blocks = $this->rsBlockNum($spec);

			$ret = $this->init($spec);

			if ($ret < 0) {

				return NULL;

			}

			$this->count = 0;

			$this->width = $this->getWidth($this->version);

			$this->frame = $this->newFrame($this->version);

			$this->x = $this->width - 1;

			$this->y = $this->width - 1;

			$this->dir = -1;

			$this->bit = -1;

			// inteleaved data and ecc codes

			for ($i=0; $i < ($this->dataLength + $this->eccLength); $i++) {

				$code = $this->getCode();

				$bit = 0x80;

				for ($j=0; $j<8; $j++) {

					$addr = $this->getNextPosition();

					$this->setFrameAt($addr, 0x02 | (($bit & $code) != 0));

					$bit = $bit >> 1;

				}

			}

			// remainder bits

			$j = $this->getRemainder($this->version);

			for ($i=0; $i<$j; $i++) {

				$addr = $this->getNextPosition();

				$this->setFrameAt($addr, 0x02);

			}

			// masking

			$this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);

			if ($mask < 0) {

				if (QR_FIND_BEST_MASK) {

					$masked = $this->mask($this->width, $this->frame, $this->level);

				} else {

					$masked = $this->makeMask($this->width, $this->frame, (intval(QR_DEFAULT_MASK) % 8), $this->level);

				}

			} else {

				$masked = $this->makeMask($this->width, $this->frame, $mask, $this->level);

			}

			if ($masked == NULL) {

				return NULL;

			}

			$this->data = $masked;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// FrameFiller



		/**

		 * Set frame value at specified position

		 * @param array $at x,y position

		 * @param int $val value of the character to set

		 */

		protected function setFrameAt($at, $val) {

			$this->frame[$at['y']][$at['x']] = chr($val);

		}



		/**

		 * Get frame value at specified position

		 * @param array $at x,y position

		 * @return value at specified position

		 */

		protected function getFrameAt($at) {

			return ord($this->frame[$at['y']][$at['x']]);

		}



		/**

		 * Return the next frame position

		 * @return array of x,y coordinates

		 */

		protected function getNextPosition() {

			do {

				if ($this->bit == -1) {

					$this->bit = 0;

					return array('x'=>$this->x, 'y'=>$this->y);

				}

				$x = $this->x;

				$y = $this->y;

				$w = $this->width;

				if ($this->bit == 0) {

					$x--;

					$this->bit++;

				} else {

					$x++;

					$y += $this->dir;

					$this->bit--;

				}

				if ($this->dir < 0) {

					if ($y < 0) {

						$y = 0;

						$x -= 2;

						$this->dir = 1;

						if ($x == 6) {

							$x--;

							$y = 9;

						}

					}

				} else {

					if ($y == $w) {

						$y = $w - 1;

						$x -= 2;

						$this->dir = -1;

						if ($x == 6) {

							$x--;

							$y -= 8;

						}

					}

				}

				if (($x < 0) OR ($y < 0)) {

					return NULL;

				}

				$this->x = $x;

				$this->y = $y;

			} while(ord($this->frame[$y][$x]) & 0x80);

			return array('x'=>$x, 'y'=>$y);

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRrawcode



		/**

		 * Initialize code.

		 * @param array $spec array of ECC specification

		 * @return 0 in case of success, -1 in case of error

		 */

		protected function init($spec) {

			$dl = $this->rsDataCodes1($spec);

			$el = $this->rsEccCodes1($spec);

			$rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);

			$blockNo = 0;

			$dataPos = 0;

			$eccPos = 0;

			$endfor = $this->rsBlockNum1($spec);

			for ($i=0; $i < $endfor; ++$i) {

				$ecc = array_slice($this->ecccode, $eccPos);

				$this->rsblocks[$blockNo] = array();

				$this->rsblocks[$blockNo]['dataLength'] = $dl;

				$this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);

				$this->rsblocks[$blockNo]['eccLength'] = $el;

				$ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);

				$this->rsblocks[$blockNo]['ecc'] = $ecc;

				$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);

				$dataPos += $dl;

				$eccPos += $el;

				$blockNo++;

			}

			if ($this->rsBlockNum2($spec) == 0) {

				return 0;

			}

			$dl = $this->rsDataCodes2($spec);

			$el = $this->rsEccCodes2($spec);

			$rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);

			if ($rs == NULL) {

				return -1;

			}

			$endfor = $this->rsBlockNum2($spec);

			for ($i=0; $i < $endfor; ++$i) {

				$ecc = array_slice($this->ecccode, $eccPos);

				$this->rsblocks[$blockNo] = array();

				$this->rsblocks[$blockNo]['dataLength'] = $dl;

				$this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);

				$this->rsblocks[$blockNo]['eccLength'] = $el;

				$ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);

				$this->rsblocks[$blockNo]['ecc'] = $ecc;

				$this->ecccode = array_merge(array_slice($this->ecccode, 0, $eccPos), $ecc);

				$dataPos += $dl;

				$eccPos += $el;

				$blockNo++;

			}

			return 0;

		}



		/**

		 * Return Reed-Solomon block code.

		 * @return array rsblocks

		 */

		protected function getCode() {

			if ($this->count < $this->dataLength) {

				$row = $this->count % $this->blocks;

				$col = $this->count / $this->blocks;

				if ($col >= $this->rsblocks[0]['dataLength']) {

					$row += $this->b1;

				}

				$ret = $this->rsblocks[$row]['data'][$col];

			} elseif ($this->count < $this->dataLength + $this->eccLength) {

				$row = ($this->count - $this->dataLength) % $this->blocks;

				$col = ($this->count - $this->dataLength) / $this->blocks;

				$ret = $this->rsblocks[$row]['ecc'][$col];

			} else {

				return 0;

			}

			$this->count++;

			return $ret;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRmask



		/**

		 * Write Format Information on frame and returns the number of black bits

		 * @param int $width frame width

		 * @param array $frame frame

		 * @param array $mask masking mode

		 * @param int $level error correction level

		 * @return int blacks

		 */

		 protected function writeFormatInformation($width, &$frame, $mask, $level) {

			$blacks = 0;

			$format =  $this->getFormatInfo($mask, $level);

			for ($i=0; $i<8; ++$i) {

				if ($format & 1) {

					$blacks += 2;

					$v = 0x85;

				} else {

					$v = 0x84;

				}

				$frame[8][$width - 1 - $i] = chr($v);

				if ($i < 6) {

					$frame[$i][8] = chr($v);

				} else {

					$frame[$i + 1][8] = chr($v);

				}

				$format = $format >> 1;

			}

			for ($i=0; $i<7; ++$i) {

			if ($format & 1) {

				$blacks += 2;

				$v = 0x85;

			} else {

				$v = 0x84;

			}

			$frame[$width - 7 + $i][8] = chr($v);

			if ($i == 0) {

				$frame[8][7] = chr($v);

			} else {

				$frame[8][6 - $i] = chr($v);

			}

			$format = $format >> 1;

			}

			return $blacks;

		}



		/**

		 * mask0

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask0($x, $y) {

			return ($x + $y) & 1;

		}



		/**

		 * mask1

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask1($x, $y) {

			return ($y & 1);

		}



		/**

		 * mask2

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask2($x, $y) {

			return ($x % 3);

		}



		/**

		 * mask3

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask3($x, $y) {

			return ($x + $y) % 3;

		}



		/**

		 * mask4

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask4($x, $y) {

			return (((int)($y / 2)) + ((int)($x / 3))) & 1;

		}



		/**

		 * mask5

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask5($x, $y) {

			return (($x * $y) & 1) + ($x * $y) % 3;

		}



		/**

		 * mask6

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask6($x, $y) {

			return ((($x * $y) & 1) + ($x * $y) % 3) & 1;

		}



		/**

		 * mask7

		 * @param int $x X position

		 * @param int $y Y position

		 * @return int mask

		 */

		 protected function mask7($x, $y) {

			return ((($x * $y) % 3) + (($x + $y) & 1)) & 1;

		}



		/**

		 * Return bitmask

		 * @param int $maskNo mask number

		 * @param int $width width

		 * @param array $frame frame

		 * @return array bitmask

		 */

		protected function generateMaskNo($maskNo, $width, $frame) {

			$bitMask = array_fill(0, $width, array_fill(0, $width, 0));

			for ($y=0; $y<$width; ++$y) {

				for ($x=0; $x<$width; ++$x) {

					if (ord($frame[$y][$x]) & 0x80) {

						$bitMask[$y][$x] = 0;

					} else {

						$maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y);

						$bitMask[$y][$x] = ($maskFunc == 0)?1:0;

					}

				}

			}

			return $bitMask;

		}



		/**

		 * makeMaskNo

		 * @param int $maskNo

		 * @param int $width

		 * @param int $s

		 * @param int $d

		 * @param boolean $maskGenOnly

		 * @return int b

		 */

		 protected function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly=false) {

			$b = 0;

			$bitMask = array();

			$bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);

			if ($maskGenOnly) {

				return;

			}

			$d = $s;

			for ($y=0; $y<$width; ++$y) {

				for ($x=0; $x<$width; ++$x) {

					if ($bitMask[$y][$x] == 1) {

						$d[$y][$x] = chr(ord($s[$y][$x]) ^ (int)$bitMask[$y][$x]);

					}

					$b += (int)(ord($d[$y][$x]) & 1);

				}

			}

			return $b;

		}



		/**

		 * makeMask

		 * @param int $width

		 * @param array $frame

		 * @param int $maskNo

		 * @param int $level

		 * @return array mask

		 */

		 protected function makeMask($width, $frame, $maskNo, $level) {

			$masked = array_fill(0, $width, str_repeat("\0", $width));

			$this->makeMaskNo($maskNo, $width, $frame, $masked);

			$this->writeFormatInformation($width, $masked, $maskNo, $level);

			return $masked;

		}



		/**

		 * calcN1N3

		 * @param int $length

		 * @return int demerit

		 */

		 protected function calcN1N3($length) {

			$demerit = 0;

			for ($i=0; $i<$length; ++$i) {

				if ($this->runLength[$i] >= 5) {

					$demerit += (N1 + ($this->runLength[$i] - 5));

				}

				if ($i & 1) {

					if (($i >= 3) AND ($i < ($length-2)) AND ($this->runLength[$i] % 3 == 0)) {

						$fact = (int)($this->runLength[$i] / 3);

						if (($this->runLength[$i-2] == $fact)

							AND ($this->runLength[$i-1] == $fact)

							AND ($this->runLength[$i+1] == $fact)

							AND ($this->runLength[$i+2] == $fact)) {

							if (($this->runLength[$i-3] < 0) OR ($this->runLength[$i-3] >= (4 * $fact))) {

								$demerit += N3;

							} elseif ((($i+3) >= $length) OR ($this->runLength[$i+3] >= (4 * $fact))) {

								$demerit += N3;

							}

						}

					}

				}

			}

			return $demerit;

		}



		/**

		 * evaluateSymbol

		 * @param int $width

		 * @param array $frame

		 * @return int demerit

		 */

		 protected function evaluateSymbol($width, $frame) {

			$head = 0;

			$demerit = 0;

			for ($y=0; $y<$width; ++$y) {

				$head = 0;

				$this->runLength[0] = 1;

				$frameY = $frame[$y];

				if ($y > 0) {

					$frameYM = $frame[$y-1];

				}

				for ($x=0; $x<$width; ++$x) {

					if (($x > 0) AND ($y > 0)) {

						$b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);

						$w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);

						if (($b22 | ($w22 ^ 1)) & 1) {

							$demerit += N2;

						}

					}

					if (($x == 0) AND (ord($frameY[$x]) & 1)) {

						$this->runLength[0] = -1;

						$head = 1;

						$this->runLength[$head] = 1;

					} elseif ($x > 0) {

						if ((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) {

							$head++;

							$this->runLength[$head] = 1;

						} else {

							$this->runLength[$head]++;

						}

					}

				}

				$demerit += $this->calcN1N3($head+1);

			}

			for ($x=0; $x<$width; ++$x) {

				$head = 0;

				$this->runLength[0] = 1;

				for ($y=0; $y<$width; ++$y) {

					if (($y == 0) AND (ord($frame[$y][$x]) & 1)) {

						$this->runLength[0] = -1;

						$head = 1;

						$this->runLength[$head] = 1;

					} elseif ($y > 0) {

						if ((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) {

							$head++;

							$this->runLength[$head] = 1;

						} else {

							$this->runLength[$head]++;

						}

					}

				}

				$demerit += $this->calcN1N3($head+1);

			}

			return $demerit;

		}



		/**

		 * mask

		 * @param int $width

		 * @param array $frame

		 * @param int $level

		 * @return array best mask

		 */

		 protected function mask($width, $frame, $level) {

			$minDemerit = PHP_INT_MAX;

			$bestMaskNum = 0;

			$bestMask = array();

			$checked_masks = array(0, 1, 2, 3, 4, 5, 6, 7);

			if (QR_FIND_FROM_RANDOM !== false) {

				$howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);

				for ($i = 0; $i <  $howManuOut; ++$i) {

					$remPos = rand (0, count($checked_masks)-1);

					unset($checked_masks[$remPos]);

					$checked_masks = array_values($checked_masks);

				}

			}

			$bestMask = $frame;

			foreach ($checked_masks as $i) {

				$mask = array_fill(0, $width, str_repeat("\0", $width));

				$demerit = 0;

				$blacks = 0;

				$blacks  = $this->makeMaskNo($i, $width, $frame, $mask);

				$blacks += $this->writeFormatInformation($width, $mask, $i, $level);

				$blacks  = (int)(100 * $blacks / ($width * $width));

				$demerit = (int)((int)(abs($blacks - 50) / 5) * N4);

				$demerit += $this->evaluateSymbol($width, $mask);

				if ($demerit < $minDemerit) {

					$minDemerit = $demerit;

					$bestMask = $mask;

					$bestMaskNum = $i;

				}

			}

			return $bestMask;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRsplit



		/**

		 * Return true if the character at specified position is a number

		 * @param string $str string

		 * @param int $pos characted position

		 * @return boolean true of false

		 */

		 protected function isdigitat($str, $pos) {

			if ($pos >= strlen($str)) {

				return false;

			}

			return ((ord($str[$pos]) >= ord('0'))&&(ord($str[$pos]) <= ord('9')));

		}



		/**

		 * Return true if the character at specified position is an alphanumeric character

		 * @param string $str string

		 * @param int $pos characted position

		 * @return boolean true of false

		 */

		 protected function isalnumat($str, $pos) {

			if ($pos >= strlen($str)) {

				return false;

			}

			return ($this->lookAnTable(ord($str[$pos])) >= 0);

		}



		/**

		 * identifyMode

		 * @param int $pos

		 * @return int mode

		 */

		 protected function identifyMode($pos) {

			if ($pos >= strlen($this->dataStr)) {

				return QR_MODE_NL;

			}

			$c = $this->dataStr[$pos];

			if ($this->isdigitat($this->dataStr, $pos)) {

				return QR_MODE_NM;

			} elseif ($this->isalnumat($this->dataStr, $pos)) {

				return QR_MODE_AN;

			} elseif ($this->hint == QR_MODE_KJ) {

				if ($pos+1 < strlen($this->dataStr)) {

					$d = $this->dataStr[$pos+1];

					$word = (ord($c) << 8) | ord($d);

					if (($word >= 0x8140 && $word <= 0x9ffc) OR ($word >= 0xe040 && $word <= 0xebbf)) {

						return QR_MODE_KJ;

					}

				}

			}

			return QR_MODE_8B;

		}



		/**

		 * eatNum

		 * @return int run

		 */

		 protected function eatNum() {

			$ln = $this->lengthIndicator(QR_MODE_NM, $this->version);

			$p = 0;

			while($this->isdigitat($this->dataStr, $p)) {

				$p++;

			}

			$run = $p;

			$mode = $this->identifyMode($p);

			if ($mode == QR_MODE_8B) {

				$dif = $this->estimateBitsModeNum($run) + 4 + $ln

				+ $this->estimateBitsMode8(1)         // + 4 + l8

				- $this->estimateBitsMode8($run + 1); // - 4 - l8

				if ($dif > 0) {

					return $this->eat8();

				}

			}

			if ($mode == QR_MODE_AN) {

				$dif = $this->estimateBitsModeNum($run) + 4 + $ln

				+ $this->estimateBitsModeAn(1)        // + 4 + la

				- $this->estimateBitsModeAn($run + 1);// - 4 - la

				if ($dif > 0) {

					return $this->eatAn();

				}

			}

			$this->items = $this->appendNewInputItem($this->items, QR_MODE_NM, $run, str_split($this->dataStr));

			return $run;

		}



		/**

		 * eatAn

		 * @return int run

		 */

		 protected function eatAn() {

			$la = $this->lengthIndicator(QR_MODE_AN,  $this->version);

			$ln = $this->lengthIndicator(QR_MODE_NM, $this->version);

			$p = 0;

			while($this->isalnumat($this->dataStr, $p)) {

				if ($this->isdigitat($this->dataStr, $p)) {

					$q = $p;

					while($this->isdigitat($this->dataStr, $q)) {

						$q++;

					}

					$dif = $this->estimateBitsModeAn($p) // + 4 + la

					+ $this->estimateBitsModeNum($q - $p) + 4 + $ln

					- $this->estimateBitsModeAn($q); // - 4 - la

					if ($dif < 0) {

						break;

					} else {

						$p = $q;

					}

				} else {

					$p++;

				}

			}

			$run = $p;

			if (!$this->isalnumat($this->dataStr, $p)) {

				$dif = $this->estimateBitsModeAn($run) + 4 + $la

				+ $this->estimateBitsMode8(1) // + 4 + l8

				- $this->estimateBitsMode8($run + 1); // - 4 - l8

				if ($dif > 0) {

					return $this->eat8();

				}

			}

			$this->items = $this->appendNewInputItem($this->items, QR_MODE_AN, $run, str_split($this->dataStr));

			return $run;

		}



		/**

		 * eatKanji

		 * @return int run

		 */

		 protected function eatKanji() {

			$p = 0;

			while($this->identifyMode($p) == QR_MODE_KJ) {

				$p += 2;

			}

			$this->items = $this->appendNewInputItem($this->items, QR_MODE_KJ, $p, str_split($this->dataStr));

			return $run;

		}



		/**

		 * eat8

		 * @return int run

		 */

		 protected function eat8() {

			$la = $this->lengthIndicator(QR_MODE_AN, $this->version);

			$ln = $this->lengthIndicator(QR_MODE_NM, $this->version);

			$p = 1;

			$dataStrLen = strlen($this->dataStr);

			while($p < $dataStrLen) {

				$mode = $this->identifyMode($p);

				if ($mode == QR_MODE_KJ) {

					break;

				}

				if ($mode == QR_MODE_NM) {

					$q = $p;

					while($this->isdigitat($this->dataStr, $q)) {

						$q++;

					}

					$dif = $this->estimateBitsMode8($p) // + 4 + l8

					+ $this->estimateBitsModeNum($q - $p) + 4 + $ln

					- $this->estimateBitsMode8($q); // - 4 - l8

					if ($dif < 0) {

						break;

					} else {

						$p = $q;

					}

				} elseif ($mode == QR_MODE_AN) {

					$q = $p;

					while($this->isalnumat($this->dataStr, $q)) {

						$q++;

					}

					$dif = $this->estimateBitsMode8($p)  // + 4 + l8

					+ $this->estimateBitsModeAn($q - $p) + 4 + $la

					- $this->estimateBitsMode8($q); // - 4 - l8

					if ($dif < 0) {

						break;

					} else {

						$p = $q;

					}

				} else {

					$p++;

				}

			}

			$run = $p;

			$this->items = $this->appendNewInputItem($this->items, QR_MODE_8B, $run, str_split($this->dataStr));

			return $run;

		}



		/**

		 * splitString

		 */

		 protected function splitString() {

			while (strlen($this->dataStr) > 0) {

				if ($this->dataStr == '') {

					return 0;

				}

				$mode = $this->identifyMode(0);

				switch ($mode) {

					case QR_MODE_NM: {

						$length = $this->eatNum();

						break;

					}

					case QR_MODE_AN: {

						$length = $this->eatAn();

						break;

					}

					case QR_MODE_KJ: {

						if ($hint == QR_MODE_KJ) {

							$length = $this->eatKanji();

						} else {

							$length = $this->eat8();

						}

						break;

					}

					default: {

						$length = $this->eat8();

						break;

					}

				}

				if ($length == 0) {

					return 0;

				}

				if ($length < 0) {

					return -1;

				}

				$this->dataStr = substr($this->dataStr, $length);

			}

		}



		/**

		 * toUpper

		 */

		 protected function toUpper() {

			$stringLen = strlen($this->dataStr);

			$p = 0;

			while ($p < $stringLen) {

				$mode = $this->identifyMode(substr($this->dataStr, $p), $this->hint);

				if ($mode == QR_MODE_KJ) {

					$p += 2;

				} else {

					if ((ord($this->dataStr[$p]) >= ord('a')) AND (ord($this->dataStr[$p]) <= ord('z'))) {

						$this->dataStr[$p] = chr(ord($this->dataStr[$p]) - 32);

					}

					$p++;

				}

			}

			return $this->dataStr;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRinputItem



		/**

		 * newInputItem

		 * @param int $mode

		 * @param int $size

		 * @param array $data

		 * @param array $bstream

		 * @return array input item

		 */

		 protected function newInputItem($mode, $size, $data, $bstream=null) {

			$setData = array_slice($data, 0, $size);

			if (count($setData) < $size) {

				$setData = array_merge($setData, array_fill(0, ($size - count($setData)), 0));

			}

			if (!$this->check($mode, $size, $setData)) {

				return NULL;

			}

			$inputitem = array();

			$inputitem['mode'] = $mode;

			$inputitem['size'] = $size;

			$inputitem['data'] = $setData;

			$inputitem['bstream'] = $bstream;

			return $inputitem;

		}



		/**

		 * encodeModeNum

		 * @param array $inputitem

		 * @param int $version

		 * @return array input item

		 */

		 protected function encodeModeNum($inputitem, $version) {

			$words = (int)($inputitem['size'] / 3);

			$inputitem['bstream'] = array();

			$val = 0x1;

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_NM, $version), $inputitem['size']);

			for ($i=0; $i < $words; ++$i) {

				$val  = (ord($inputitem['data'][$i*3  ]) - ord('0')) * 100;

				$val += (ord($inputitem['data'][$i*3+1]) - ord('0')) * 10;

				$val += (ord($inputitem['data'][$i*3+2]) - ord('0'));

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 10, $val);

			}

			if ($inputitem['size'] - $words * 3 == 1) {

				$val = ord($inputitem['data'][$words*3]) - ord('0');

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);

			} elseif (($inputitem['size'] - ($words * 3)) == 2) {

				$val  = (ord($inputitem['data'][$words*3  ]) - ord('0')) * 10;

				$val += (ord($inputitem['data'][$words*3+1]) - ord('0'));

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 7, $val);

			}

			return $inputitem;

		}



		/**

		 * encodeModeAn

		 * @param array $inputitem

		 * @param int $version

		 * @return array input item

		 */

		 protected function encodeModeAn($inputitem, $version) {

			$words = (int)($inputitem['size'] / 2);

			$inputitem['bstream'] = array();

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x02);

			$inputitem['bstream'] = $this->appendNum(v, $this->lengthIndicator(QR_MODE_AN, $version), $inputitem['size']);

			for ($i=0; $i < $words; ++$i) {

				$val  = (int)$this->lookAnTable(ord($inputitem['data'][$i*2  ])) * 45;

				$val += (int)$this->lookAnTable(ord($inputitem['data'][$i*2+1]));

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 11, $val);

			}

			if ($inputitem['size'] & 1) {

				$val = $this->lookAnTable(ord($inputitem['data'][($words * 2)]));

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 6, $val);

			}

			return $inputitem;

		}



		/**

		 * encodeMode8

		 * @param array $inputitem

		 * @param int $version

		 * @return array input item

		 */

		 protected function encodeMode8($inputitem, $version) {

			$inputitem['bstream'] = array();

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x4);

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_8B, $version), $inputitem['size']);

			for ($i=0; $i < $inputitem['size']; ++$i) {

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][$i]));

			}

			return $inputitem;

		}



		/**

		 * encodeModeKanji

		 * @param array $inputitem

		 * @param int $version

		 * @return array input item

		 */

		 protected function encodeModeKanji($inputitem, $version) {

			$inputitem['bstream'] = array();

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x8);

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_KJ, $version), (int)($inputitem['size'] / 2));

			for ($i=0; $i<$inputitem['size']; $i+=2) {

				$val = (ord($inputitem['data'][$i]) << 8) | ord($inputitem['data'][$i+1]);

				if ($val <= 0x9ffc) {

					$val -= 0x8140;

				} else {

					$val -= 0xc140;

				}

				$h = ($val >> 8) * 0xc0;

				$val = ($val & 0xff) + $h;

				$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 13, $val);

			}

			return $inputitem;

		}



		/**

		 * encodeModeStructure

		 * @param array $inputitem

		 * @return array input item

		 */

		 protected function encodeModeStructure($inputitem) {

			$inputitem['bstream'] = array();

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x03);

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][1]) - 1);

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][0]) - 1);

			$inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][2]));

			return $inputitem;

		}



		/**

		 * encodeBitStream

		 * @param array $inputitem

		 * @param int $version

		 * @return array input item

		 */

		 protected function encodeBitStream($inputitem, $version) {

			$inputitem['bstream'] = array();

			$words = $this->maximumWords($inputitem['mode'], $version);

			if ($inputitem['size'] > $words) {

				$st1 = $this->newInputItem($inputitem['mode'], $words, $inputitem['data']);

				$st2 = $this->newInputItem($inputitem['mode'], $inputitem['size'] - $words, array_slice($inputitem['data'], $words));

				$st1 = $this->encodeBitStream($st1, $version);

				$st2 = $this->encodeBitStream($st2, $version);

				$inputitem['bstream'] = array();

				$inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st1['bstream']);

				$inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st2['bstream']);

			} else {

				switch($inputitem['mode']) {

					case QR_MODE_NM: {

						$inputitem = $this->encodeModeNum($inputitem, $version);

						break;

					}

					case QR_MODE_AN: {

						$inputitem = $this->encodeModeAn($inputitem, $version);

						break;

					}

					case QR_MODE_8B: {

						$inputitem = $this->encodeMode8($inputitem, $version);

						break;

					}

					case QR_MODE_KJ: {

						$inputitem = $this->encodeModeKanji($inputitem, $version);

						break;

					}

					case QR_MODE_ST: {

						$inputitem = $this->encodeModeStructure($inputitem);

						break;

					}

					default: {

						break;

					}

				}

			}

			return $inputitem;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRinput



		/**

		 * Append data to an input object.

		 * The data is copied and appended to the input object.

		 * @param array items input items

		 * @param int $mode encoding mode.

		 * @param int $size size of data (byte).

		 * @param array $data array of input data.

		 * @return items

		 *

		 */

		protected function appendNewInputItem($items, $mode, $size, $data) {

			$items[] = $this->newInputItem($mode, $size, $data);

			return $items;

		}



		/**

		 * insertStructuredAppendHeader

		 * @param array $items

		 * @param int $size

		 * @param int $index

		 * @param int $parity

		 * @return array items

		 */

		 protected function insertStructuredAppendHeader($items, $size, $index, $parity) {

			if ($size > MAX_STRUCTURED_SYMBOLS) {

				return -1;

			}

			if (($index <= 0) OR ($index > MAX_STRUCTURED_SYMBOLS)) {

				return -1;

			}

			$buf = array($size, $index, $parity);

			$entry = $this->newInputItem(QR_MODE_ST, 3, buf);

			array_unshift($items, $entry);

			return $items;

		}



		/**

		 * calcParity

		 * @param array $items

		 * @return int parity

		 */

		 protected function calcParity($items) {

			$parity = 0;

			foreach ($items as $item) {

				if ($item['mode'] != QR_MODE_ST) {

					for ($i=$item['size']-1; $i>=0; --$i) {

						$parity ^= $item['data'][$i];

					}

				}

			}

			return $parity;

		}



		/**

		 * checkModeNum

		 * @param int $size

		 * @param array $data

		 * @return boolean true or false

		 */

		 protected function checkModeNum($size, $data) {

			for ($i=0; $i<$size; ++$i) {

				if ((ord($data[$i]) < ord('0')) OR (ord($data[$i]) > ord('9'))){

					return false;

				}

			}

			return true;

		}



		/**

		 * estimateBitsModeNum

		 * @param int $size

		 * @return int number of bits

		 */

		 protected function estimateBitsModeNum($size) {

			$w = (int)$size / 3;

			$bits = $w * 10;

			switch($size - $w * 3) {

				case 1: {

					$bits += 4;

					break;

				}

				case 2: {

					$bits += 7;

					break;

				}

				default: {

					break;

				}

			}

			return $bits;

		}



		/**

		 * Look up the alphabet-numeric convesion table (see JIS X0510:2004, pp.19).

		 * @param int $c character value

		 * @return value

		 */

		protected function lookAnTable($c) {

			return (($c > 127)?-1:$this->anTable[$c]);

		}



		/**

		 * checkModeAn

		 * @param int $size

		 * @param array $data

		 * @return boolean true or false

		 */

		 protected function checkModeAn($size, $data) {

			for ($i=0; $i<$size; ++$i) {

				if ($this->lookAnTable(ord($data[$i])) == -1) {

					return false;

				}

			}

			return true;

		}



		/**

		 * estimateBitsModeAn

		 * @param int $size

		 * @return int number of bits

		 */

		 protected function estimateBitsModeAn($size) {

			$w = (int)($size / 2);

			$bits = $w * 11;

			if ($size & 1) {

				$bits += 6;

			}

			return $bits;

		}



		/**

		 * estimateBitsMode8

		 * @param int $size

		 * @return int number of bits

		 */

		 protected function estimateBitsMode8($size) {

			return $size * 8;

		}



		/**

		 * estimateBitsModeKanji

		 * @param int $size

		 * @return int number of bits

		 */

		 protected function estimateBitsModeKanji($size) {

			return (int)(($size / 2) * 13);

		}



		/**

		 * checkModeKanji

		 * @param int $size

		 * @param array $data

		 * @return boolean true or false

		 */

		 protected function checkModeKanji($size, $data) {

			if ($size & 1) {

				return false;

			}

			for ($i=0; $i<$size; $i+=2) {

				$val = (ord($data[$i]) << 8) | ord($data[$i+1]);

				if (($val < 0x8140) OR (($val > 0x9ffc) AND ($val < 0xe040)) OR ($val > 0xebbf)) {

					return false;

				}

			}

			return true;

		}



		/**

		 * Validate the input data.

		 * @param int $mode encoding mode.

		 * @param int $size size of data (byte).

		 * @param array data data to validate

		 * @return boolean true in case of valid data, false otherwise

		 */

		protected function check($mode, $size, $data) {

			if ($size <= 0) {

				return false;

			}

			switch($mode) {

				case QR_MODE_NM: {

					return $this->checkModeNum($size, $data);

				}

				case QR_MODE_AN: {

					return $this->checkModeAn($size, $data);

				}

				case QR_MODE_KJ: {

					return $this->checkModeKanji($size, $data);

				}

				case QR_MODE_8B: {

					return true;

				}

				case QR_MODE_ST: {

					return true;

				}

				default: {

					break;

				}

			}

			return false;

		}



		/**

		 * estimateBitStreamSize

		 * @param array $items

		 * @param int $version

		 * @return int bits

		 */

		 protected function estimateBitStreamSize($items, $version) {

			$bits = 0;

			if ($version == 0) {

				$version = 1;

			}

			foreach ($items as $item) {

				switch($item['mode']) {

					case QR_MODE_NM: {

						$bits = $this->estimateBitsModeNum($item['size']);

						break;

					}

					case QR_MODE_AN: {

						$bits = $this->estimateBitsModeAn($item['size']);

						break;

					}

					case QR_MODE_8B: {

						$bits = $this->estimateBitsMode8($item['size']);

						break;

					}

					case QR_MODE_KJ: {

						$bits = $this->estimateBitsModeKanji($item['size']);

						break;

					}

					case QR_MODE_ST: {

						return STRUCTURE_HEADER_BITS;

					}

					default: {

						return 0;

					}

				}

				$l = $this->lengthIndicator($item['mode'], $version);

				$m = 1 << $l;

				$num = (int)(($item['size'] + $m - 1) / $m);

				$bits += $num * (4 + $l);

			}

			return $bits;

		}



		/**

		 * estimateVersion

		 * @param array $items

		 * @return int version

		 */

		 protected function estimateVersion($items) {

			$version = 0;

			$prev = 0;

			do {

				$prev = $version;

				$bits = $this->estimateBitStreamSize($items, $prev);

				$version = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);

				if ($version < 0) {

					return -1;

				}

			} while ($version > $prev);

			return $version;

		}



		/**

		 * lengthOfCode

		 * @param int $mode

		 * @param int $version

		 * @param int $bits

		 * @return int size

		 */

		 protected function lengthOfCode($mode, $version, $bits) {

			$payload = $bits - 4 - $this->lengthIndicator($mode, $version);

			switch($mode) {

				case QR_MODE_NM: {

					$chunks = (int)($payload / 10);

					$remain = $payload - $chunks * 10;

					$size = $chunks * 3;

					if ($remain >= 7) {

						$size += 2;

					} elseif ($remain >= 4) {

						$size += 1;

					}

					break;

				}

				case QR_MODE_AN: {

					$chunks = (int)($payload / 11);

					$remain = $payload - $chunks * 11;

					$size = $chunks * 2;

					if ($remain >= 6) {

						++$size;

					}

					break;

				}

				case QR_MODE_8B: {

					$size = (int)($payload / 8);

					break;

				}

				case QR_MODE_KJ: {

					$size = (int)(($payload / 13) * 2);

					break;

				}

				case QR_MODE_ST: {

					$size = (int)($payload / 8);

					break;

				}

				default: {

					$size = 0;

					break;

				}

			}

			$maxsize = $this->maximumWords($mode, $version);

			if ($size < 0) {

				$size = 0;

			}

			if ($size > $maxsize) {

				$size = $maxsize;

			}

			return $size;

		}



		/**

		 * createBitStream

		 * @param array $items

		 * @return array of items and total bits

		 */

		 protected function createBitStream($items) {

			$total = 0;

			foreach ($items as $key => $item) {

				$items[$key] = $this->encodeBitStream($item, $this->version);

				$bits = count($items[$key]['bstream']);

				$total += $bits;

			}

			return array($items, $total);

		}



		/**

		 * convertData

		 * @param array $items

		 * @return array items

		 */

		 protected function convertData($items) {

			$ver = $this->estimateVersion($items);

			if ($ver > $this->version) {

				$this->version = $ver;

			}

			for (;;) {

				$cbs = $this->createBitStream($items);

				$items = $cbs[0];

				$bits = $cbs[1];

				if ($bits < 0) {

					return -1;

				}

				$ver = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);

				if ($ver < 0) {

					return -1;

				} elseif ($ver > $this->version) {

					$this->version = $ver;

				} else {

					break;

				}

			}

			return $items;

		}



		/**

		 * Append Padding Bit to bitstream

		 * @param array $bstream

		 * @return array bitstream

		 */

		 protected function appendPaddingBit($bstream) {

			$bits = count($bstream);

			$maxwords = $this->getDataLength($this->version, $this->level);

			$maxbits = $maxwords * 8;

			if ($maxbits == $bits) {

				return 0;

			}

			if ($maxbits - $bits < 5) {

				return $this->appendNum($bstream, $maxbits - $bits, 0);

			}

			$bits += 4;

			$words = (int)(($bits + 7) / 8);

			$padding = array();

			$padding = $this->appendNum($padding, $words * 8 - $bits + 4, 0);

			$padlen = $maxwords - $words;

			if ($padlen > 0) {

				$padbuf = array();

				for ($i=0; $i<$padlen; ++$i) {

					$padbuf[$i] = ($i&1)?0x11:0xec;

				}

				$padding = $this->appendBytes($padding, $padlen, $padbuf);

			}

			return $this->appendBitstream($bstream, $padding);

		}



		/**

		 * mergeBitStream

		 * @param array $bstream

		 * @return array bitstream

		 */

		 protected function mergeBitStream($items) {

			$items = $this->convertData($items);

			$bstream = array();

			foreach ($items as $item) {

				$bstream = $this->appendBitstream($bstream, $item['bstream']);

			}

			return $bstream;

		}



		/**

		 * Returns a stream of bits.

		 * @param int $items

		 * @return array padded merged byte stream

		 */

		protected function getBitStream($items) {

			$bstream = $this->mergeBitStream($items);

			return $this->appendPaddingBit($bstream);

		}



		/**

		 * Pack all bit streams padding bits into a byte array.

		 * @param int $items

		 * @return array padded merged byte stream

		 */

		protected function getByteStream($items) {

			$bstream = $this->getBitStream($items);

			return $this->bitstreamToByte($bstream);

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRbitstream



		/**

		 * Return an array with zeros

		 * @param int $setLength array size

		 * @return array

		 */

		 protected function allocate($setLength) {

			return array_fill(0, $setLength, 0);

		}



		/**

		 * Return new bitstream from number

		 * @param int $bits number of bits

		 * @param int $num number

		 * @return array bitstream

		 */

		 protected function newFromNum($bits, $num) {

			$bstream = $this->allocate($bits);

			$mask = 1 << ($bits - 1);

			for ($i=0; $i<$bits; ++$i) {

				if ($num & $mask) {

					$bstream[$i] = 1;

				} else {

					$bstream[$i] = 0;

				}

				$mask = $mask >> 1;

			}

			return $bstream;

		}



		/**

		 * Return new bitstream from bytes

		 * @param int $size size

		 * @param array $data bytes

		 * @return array bitstream

		 */

		 protected function newFromBytes($size, $data) {

			$bstream = $this->allocate($size * 8);

			$p=0;

			for ($i=0; $i<$size; ++$i) {

				$mask = 0x80;

				for ($j=0; $j<8; ++$j) {

					if ($data[$i] & $mask) {

						$bstream[$p] = 1;

					} else {

						$bstream[$p] = 0;

					}

					$p++;

					$mask = $mask >> 1;

				}

			}

			return $bstream;

		}



		/**

		 * Append one bitstream to another

		 * @param array $bitstream original bitstream

		 * @param array $append bitstream to append

		 * @return array bitstream

		 */

		 protected function appendBitstream($bitstream, $append) {

			if ((!is_array($append)) OR (count($append) == 0)) {

				return $bitstream;

			}

			if (count($bitstream) == 0) {

				return $append;

			}

			return array_values(array_merge($bitstream, $append));

		}



		/**

		 * Append one bitstream created from number to another

		 * @param array $bitstream original bitstream

		 * @param int $bits number of bits

		 * @param int $num number

		 * @return array bitstream

		 */

		 protected function appendNum($bitstream, $bits, $num) {

			if ($bits == 0) {

				return 0;

			}

			$b = $this->newFromNum($bits, $num);

			return $this->appendBitstream($bitstream, $b);

		}



		/**

		 * Append one bitstream created from bytes to another

		 * @param array $bitstream original bitstream

		 * @param int $size size

		 * @param array $data bytes

		 * @return array bitstream

		 */

		 protected function appendBytes($bitstream, $size, $data) {

			if ($size == 0) {

				return 0;

			}

			$b = $this->newFromBytes($size, $data);

			return $this->appendBitstream($bitstream, $b);

		}



		/**

		 * Convert bitstream to bytes

		 * @param array $bitstream original bitstream

		 * @return array of bytes

		 */

		 protected function bitstreamToByte($bstream) {

			$size = count($bstream);

			if ($size == 0) {

				return array();

			}

			$data = array_fill(0, (int)(($size + 7) / 8), 0);

			$bytes = (int)($size / 8);

			$p = 0;

			for ($i=0; $i<$bytes; $i++) {

				$v = 0;

				for ($j=0; $j<8; $j++) {

					$v = $v << 1;

					$v |= $bstream[$p];

					$p++;

				}

				$data[$i] = $v;

			}

			if ($size & 7) {

				$v = 0;

				for ($j=0; $j<($size & 7); $j++) {

					$v = $v << 1;

					$v |= $bstream[$p];

					$p++;

				}

				$data[$bytes] = $v;

			}

			return $data;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRspec



		/**

		 * Replace a value on the array at the specified position

		 * @param array $srctab

		 * @param int $x X position

		 * @param int $y Y position

		 * @param string $repl value to replace

		 * @param int $replLen length of the repl string

		 * @return array srctab

		 */

		 protected function qrstrset($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));

			return $srctab;

		}



		/**

		 * Return maximum data code length (bytes) for the version.

		 * @param int $version version

		 * @param int $level error correction level

		 * @return int maximum size (bytes)

		 */

		protected function getDataLength($version, $level) {

			return $this->capacity[$version][QRCAP_WORDS] - $this->capacity[$version][QRCAP_EC][$level];

		}



		/**

		 * Return maximum error correction code length (bytes) for the version.

		 * @param int $version version

		 * @param int $level error correction level

		 * @return int ECC size (bytes)

		 */

		protected function getECCLength($version, $level){

			return $this->capacity[$version][QRCAP_EC][$level];

		}



		/**

		 * Return the width of the symbol for the version.

		 * @param int $version version

		 * @return int width

		 */

		protected function getWidth($version) {

			return $this->capacity[$version][QRCAP_WIDTH];

		}



		/**

		 * Return the numer of remainder bits.

		 * @param int $version version

		 * @return int number of remainder bits

		 */

		protected function getRemainder($version) {

			return $this->capacity[$version][QRCAP_REMINDER];

		}



		/**

		 * Return a version number that satisfies the input code length.

		 * @param int $size input code length (byte)

		 * @param int $level error correction level

		 * @return int version number

		 */

		protected function getMinimumVersion($size, $level) {

			for ($i=1; $i <= QRSPEC_VERSION_MAX; ++$i) {

				$words  = $this->capacity[$i][QRCAP_WORDS] - $this->capacity[$i][QRCAP_EC][$level];

				if ($words >= $size) {

					return $i;

				}

			}

			return -1;

		}



		/**

		 * Return the size of length indicator for the mode and version.

		 * @param int $mode encoding mode

		 * @param int $version version

		 * @return int the size of the appropriate length indicator (bits).

		 */

		protected function lengthIndicator($mode, $version) {

			if ($mode == QR_MODE_ST) {

				return 0;

			}

			if ($version <= 9) {

				$l = 0;

			} elseif ($version <= 26) {

				$l = 1;

			} else {

				$l = 2;

			}

			return $this->lengthTableBits[$mode][$l];

		}



		/**

		 * Return the maximum length for the mode and version.

		 * @param int $mode encoding mode

		 * @param int $version version

		 * @return int the maximum length (bytes)

		 */

		protected function maximumWords($mode, $version) {

			if ($mode == QR_MODE_ST) {

				return 3;

			}

			if ($version <= 9) {

				$l = 0;

			} else if ($version <= 26) {

				$l = 1;

			} else {

				$l = 2;

			}

			$bits = $this->lengthTableBits[$mode][$l];

			$words = (1 << $bits) - 1;

			if ($mode == QR_MODE_KJ) {

				$words *= 2; // the number of bytes is required

			}

			return $words;

		}



		/**

		 * Return an array of ECC specification.

		 * @param int $version version

		 * @param int $level error correction level

		 * @param array $spec an array of ECC specification contains as following: {# of type1 blocks, # of data code, # of ecc code, # of type2 blocks, # of data code}

		 * @return array spec

		 */

		protected function getEccSpec($version, $level, $spec) {

			if (count($spec) < 5) {

				$spec = array(0, 0, 0, 0, 0);

			}

			$b1 = $this->eccTable[$version][$level][0];

			$b2 = $this->eccTable[$version][$level][1];

			$data = $this->getDataLength($version, $level);

			$ecc = $this->getECCLength($version, $level);

			if ($b2 == 0) {

				$spec[0] = $b1;

				$spec[1] = (int)($data / $b1);

				$spec[2] = (int)($ecc / $b1);

				$spec[3] = 0;

				$spec[4] = 0;

			} else {

				$spec[0] = $b1;

				$spec[1] = (int)($data / ($b1 + $b2));

				$spec[2] = (int)($ecc  / ($b1 + $b2));

				$spec[3] = $b2;

				$spec[4] = $spec[1] + 1;

			}

			return $spec;

		}



		/**

		 * Put an alignment marker.

		 * @param array $frame frame

		 * @param int $width width

		 * @param int $ox X center coordinate of the pattern

		 * @param int $oy Y center coordinate of the pattern

		 * @return array frame

		 */

		protected function putAlignmentMarker($frame, $ox, $oy) {

			$finder = array(

				"\xa1\xa1\xa1\xa1\xa1",

				"\xa1\xa0\xa0\xa0\xa1",

				"\xa1\xa0\xa1\xa0\xa1",

				"\xa1\xa0\xa0\xa0\xa1",

				"\xa1\xa1\xa1\xa1\xa1"

				);

			$yStart = $oy - 2;

			$xStart = $ox - 2;

			for ($y=0; $y < 5; $y++) {

				$frame = $this->qrstrset($frame, $xStart, $yStart+$y, $finder[$y]);

			}

			return $frame;

		}



		/**

		 * Put an alignment pattern.

		 * @param int $version version

		 * @param array $fram frame

		 * @param int $width width

		 * @return array frame

		 */

		 protected function putAlignmentPattern($version, $frame, $width) {

			if ($version < 2) {

				return $frame;

			}

			$d = $this->alignmentPattern[$version][1] - $this->alignmentPattern[$version][0];

			if ($d < 0) {

				$w = 2;

			} else {

				$w = (int)(($width - $this->alignmentPattern[$version][0]) / $d + 2);

			}

			if ($w * $w - 3 == 1) {

				$x = $this->alignmentPattern[$version][0];

				$y = $this->alignmentPattern[$version][0];

				$frame = $this->putAlignmentMarker($frame, $x, $y);

				return $frame;

			}

			$cx = $this->alignmentPattern[$version][0];

			$wo = $w - 1;

			for ($x=1; $x < $wo; ++$x) {

				$frame = $this->putAlignmentMarker($frame, 6, $cx);

				$frame = $this->putAlignmentMarker($frame, $cx,  6);

				$cx += $d;

			}

			$cy = $this->alignmentPattern[$version][0];

			for ($y=0; $y < $wo; ++$y) {

				$cx = $this->alignmentPattern[$version][0];

				for ($x=0; $x < $wo; ++$x) {

					$frame = $this->putAlignmentMarker($frame, $cx, $cy);

					$cx += $d;

				}

				$cy += $d;

			}

			return $frame;

		}



		/**

		 * Return BCH encoded version information pattern that is used for the symbol of version 7 or greater. Use lower 18 bits.

		 * @param int $version version

		 * @return BCH encoded version information pattern

		 */

		protected function getVersionPattern($version) {

			if (($version < 7) OR ($version > QRSPEC_VERSION_MAX)) {

				return 0;

			}

			return $this->versionPattern[($version - 7)];

		}



		/**

		 * Return BCH encoded format information pattern.

		 * @param array $mask

		 * @param int $level error correction level

		 * @return BCH encoded format information pattern

		 */

		protected function getFormatInfo($mask, $level) {

			if (($mask < 0) OR ($mask > 7)) {

				return 0;

			}

			if (($level < 0) OR ($level > 3)) {

				return 0;

			}

			return $this->formatInfo[$level][$mask];

		}



		/**

		 * Put a finder pattern.

		 * @param array $frame frame

		 * @param int $width width

		 * @param int $ox X center coordinate of the pattern

		 * @param int $oy Y center coordinate of the pattern

		 * @return array frame

		 */

		protected function putFinderPattern($frame, $ox, $oy) {

			$finder = array(

			"\xc1\xc1\xc1\xc1\xc1\xc1\xc1",

			"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",

			"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

			"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

			"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

			"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",

			"\xc1\xc1\xc1\xc1\xc1\xc1\xc1"

			);

			for ($y=0; $y < 7; $y++) {

				$frame = $this->qrstrset($frame, $ox, ($oy + $y), $finder[$y]);

			}

			return $frame;

		}



		/**

		 * Return a copy of initialized frame.

		 * @param int $version version

		 * @return Array of unsigned char.

		 */

		protected function createFrame($version) {

			$width = $this->capacity[$version][QRCAP_WIDTH];

			$frameLine = str_repeat ("\0", $width);

			$frame = array_fill(0, $width, $frameLine);

			// Finder pattern

			$frame = $this->putFinderPattern($frame, 0, 0);

			$frame = $this->putFinderPattern($frame, $width - 7, 0);

			$frame = $this->putFinderPattern($frame, 0, $width - 7);

			// Separator

			$yOffset = $width - 7;

			for ($y=0; $y < 7; ++$y) {

				$frame[$y][7] = "\xc0";

				$frame[$y][$width - 8] = "\xc0";

				$frame[$yOffset][7] = "\xc0";

				++$yOffset;

			}

			$setPattern = str_repeat("\xc0", 8);

			$frame = $this->qrstrset($frame, 0, 7, $setPattern);

			$frame = $this->qrstrset($frame, $width-8, 7, $setPattern);

			$frame = $this->qrstrset($frame, 0, $width - 8, $setPattern);

			// Format info

			$setPattern = str_repeat("\x84", 9);

			$frame = $this->qrstrset($frame, 0, 8, $setPattern);

			$frame = $this->qrstrset($frame, $width - 8, 8, $setPattern, 8);

			$yOffset = $width - 8;

			for ($y=0; $y < 8; ++$y,++$yOffset) {

				$frame[$y][8] = "\x84";

				$frame[$yOffset][8] = "\x84";

			}

			// Timing pattern

			$wo = $width - 15;

			for ($i=1; $i < $wo; ++$i) {

				$frame[6][7+$i] = chr(0x90 | ($i & 1));

				$frame[7+$i][6] = chr(0x90 | ($i & 1));

			}

			// Alignment pattern

			$frame = $this->putAlignmentPattern($version, $frame, $width);

			// Version information

			if ($version >= 7) {

				$vinf = $this->getVersionPattern($version);

				$v = $vinf;

				for ($x=0; $x<6; ++$x) {

					for ($y=0; $y<3; ++$y) {

						$frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));

						$v = $v >> 1;

					}

				}

				$v = $vinf;

				for ($y=0; $y<6; ++$y) {

					for ($x=0; $x<3; ++$x) {

						$frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));

						$v = $v >> 1;

					}

				}

			}

			// and a little bit...

			$frame[$width - 8][8] = "\x81";

			return $frame;

		}



		/**

		 * Set new frame for the specified version.

		 * @param int $version version

		 * @return Array of unsigned char.

		 */

		protected function newFrame($version) {

			if (($version < 1) OR ($version > QRSPEC_VERSION_MAX)) {

				return NULL;

			}

			if (!isset($this->frames[$version])) {

				$this->frames[$version] = $this->createFrame($version);

			}

			if (is_null($this->frames[$version])) {

				return NULL;

			}

			return $this->frames[$version];

		}



		/**

		 * Return block number 0

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsBlockNum($spec) {

			return ($spec[0] + $spec[3]);

		}



		/**

		* Return block number 1

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsBlockNum1($spec) {

			return $spec[0];

		}



		/**

		 * Return data codes 1

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsDataCodes1($spec) {

			return $spec[1];

		}



		/**

		 * Return ecc codes 1

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsEccCodes1($spec) {

			return $spec[2];

		}



		/**

		 * Return block number 2

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsBlockNum2($spec) {

			return $spec[3];

		}



		/**

		 * Return data codes 2

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsDataCodes2($spec) {

			return $spec[4];

		}



		/**

		 * Return ecc codes 2

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsEccCodes2($spec) {

			return $spec[2];

		}



		/**

		 * Return data length

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsDataLength($spec) {

			return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);

		}



		/**

		 * Return ecc length

		 * @param array $spec

		 * @return int value

		 */

		 protected function rsEccLength($spec) {

			return ($spec[0] + $spec[3]) * $spec[2];

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRrs



		/**

		 * Initialize a Reed-Solomon codec and add it to existing rsitems

		 * @param int $symsize symbol size, bits

		 * @param int $gfpoly  Field generator polynomial coefficients

		 * @param int $fcr  first root of RS code generator polynomial, index form

		 * @param int $prim  primitive element to generate polynomial roots

		 * @param int $nroots RS code generator polynomial degree (number of roots)

		 * @param int $pad  padding bytes at front of shortened block

		 * @return array Array of RS values:<ul><li>mm = Bits per symbol;</li><li>nn = Symbols per block;</li><li>alpha_to = log lookup table array;</li><li>index_of = Antilog lookup table array;</li><li>genpoly = Generator polynomial array;</li><li>nroots = Number of generator;</li><li>roots = number of parity symbols;</li><li>fcr = First consecutive root, index form;</li><li>prim = Primitive element, index form;</li><li>iprim = prim-th root of 1, index form;</li><li>pad = Padding bytes in shortened block;</li><li>gfpoly</ul>.

		 */

		 protected function init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad) {

			foreach ($this->rsitems as $rs) {

				if (($rs['pad'] != $pad) OR ($rs['nroots'] != $nroots) OR ($rs['mm'] != $symsize)

					OR ($rs['gfpoly'] != $gfpoly) OR ($rs['fcr'] != $fcr) OR ($rs['prim'] != $prim)) {

					continue;

				}

				return $rs;

			}

			$rs = $this->init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad);

			array_unshift($this->rsitems, $rs);

			return $rs;

		}



		// - - - - - - - - - - - - - - - - - - - - - - - - -



		// QRrsItem



		/**

		 * modnn

		 * @param array RS values

		 * @param int $x X position

		 * @return int X osition

		 */

		 protected function modnn($rs, $x) {

			while ($x >= $rs['nn']) {

				$x -= $rs['nn'];

				$x = ($x >> $rs['mm']) + ($x & $rs['nn']);

			}

			return $x;

		}



		/**

		 * Initialize a Reed-Solomon codec and returns an array of values.

		 * @param int $symsize symbol size, bits

		 * @param int $gfpoly  Field generator polynomial coefficients

		 * @param int $fcr  first root of RS code generator polynomial, index form

		 * @param int $prim  primitive element to generate polynomial roots

		 * @param int $nroots RS code generator polynomial degree (number of roots)

		 * @param int $pad  padding bytes at front of shortened block

		 * @return array Array of RS values:<ul><li>mm = Bits per symbol;</li><li>nn = Symbols per block;</li><li>alpha_to = log lookup table array;</li><li>index_of = Antilog lookup table array;</li><li>genpoly = Generator polynomial array;</li><li>nroots = Number of generator;</li><li>roots = number of parity symbols;</li><li>fcr = First consecutive root, index form;</li><li>prim = Primitive element, index form;</li><li>iprim = prim-th root of 1, index form;</li><li>pad = Padding bytes in shortened block;</li><li>gfpoly</ul>.

		 */

		protected function init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad) {

			// Based on Reed solomon encoder by Phil Karn, KA9Q (GNU-LGPLv2)

			$rs = null;

			// Check parameter ranges

			if (($symsize < 0) OR ($symsize > 8)) {

				return $rs;

			}

			if (($fcr < 0) OR ($fcr >= (1<<$symsize))) {

				return $rs;

			}

			if (($prim <= 0) OR ($prim >= (1<<$symsize))) {

				return $rs;

			}

			if (($nroots < 0) OR ($nroots >= (1<<$symsize))) {

				return $rs;

			}

			if (($pad < 0) OR ($pad >= ((1<<$symsize) -1 - $nroots))) {

				return $rs;

			}

			$rs = array();

			$rs['mm'] = $symsize;

			$rs['nn'] = (1 << $symsize) - 1;

			$rs['pad'] = $pad;

			$rs['alpha_to'] = array_fill(0, ($rs['nn'] + 1), 0);

			$rs['index_of'] = array_fill(0, ($rs['nn'] + 1), 0);

			// PHP style macro replacement ;)

			$NN =& $rs['nn'];

			$A0 =& $NN;

			// Generate Galois field lookup tables

			$rs['index_of'][0] = $A0; // log(zero) = -inf

			$rs['alpha_to'][$A0] = 0; // alpha**-inf = 0

			$sr = 1;

			for ($i=0; $i<$rs['nn']; ++$i) {

				$rs['index_of'][$sr] = $i;

				$rs['alpha_to'][$i] = $sr;

				$sr <<= 1;

				if ($sr & (1 << $symsize)) {

					$sr ^= $gfpoly;

				}

				$sr &= $rs['nn'];

			}

			if ($sr != 1) {

				// field generator polynomial is not primitive!

				return NULL;

			}

			// Form RS code generator polynomial from its roots

			$rs['genpoly'] = array_fill(0, ($nroots + 1), 0);

			$rs['fcr'] = $fcr;

			$rs['prim'] = $prim;

			$rs['nroots'] = $nroots;

			$rs['gfpoly'] = $gfpoly;

			// Find prim-th root of 1, used in decoding

			for ($iprim=1; ($iprim % $prim) != 0; $iprim += $rs['nn']) {

				; // intentional empty-body loop!

			}

			$rs['iprim'] = (int)($iprim / $prim);

			$rs['genpoly'][0] = 1;





			for ($i = 0,$root=$fcr*$prim; $i < $nroots; $i++, $root += $prim) {

				$rs['genpoly'][$i+1] = 1;

				// Multiply rs->genpoly[] by  @**(root + x)

				for ($j = $i; $j > 0; --$j) {

					if ($rs['genpoly'][$j] != 0) {

						$rs['genpoly'][$j] = $rs['genpoly'][$j-1] ^ $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][$j]] + $root)];

					} else {

						$rs['genpoly'][$j] = $rs['genpoly'][$j-1];

					}

				}

				// rs->genpoly[0] can never be zero

				$rs['genpoly'][0] = $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][0]] + $root)];

			}

			// convert rs->genpoly[] to index form for quicker encoding

			for ($i = 0; $i <= $nroots; ++$i) {

				$rs['genpoly'][$i] = $rs['index_of'][$rs['genpoly'][$i]];

			}

			return $rs;

		}



		/**

		 * Encode a Reed-Solomon codec and returns the parity array

		 * @param array $rs RS values

		 * @param array $data data

		 * @param array $parity parity

		 * @return parity array

		 */

		 protected function encode_rs_char($rs, $data, $parity) {

			$MM       =& $rs['mm']; // bits per symbol

			$NN       =& $rs['nn']; // the total number of symbols in a RS block

			$ALPHA_TO =& $rs['alpha_to']; // the address of an array of NN elements to convert Galois field elements in index (log) form to polynomial form

			$INDEX_OF =& $rs['index_of']; // the address of an array of NN elements to convert Galois field elements in polynomial form to index (log) form

			$GENPOLY  =& $rs['genpoly']; // an array of NROOTS+1 elements containing the generator polynomial in index form

			$NROOTS   =& $rs['nroots']; // the number of roots in the RS code generator polynomial, which is the same as the number of parity symbols in a block

			$FCR      =& $rs['fcr']; // first consecutive root, index form

			$PRIM     =& $rs['prim']; // primitive element, index form

			$IPRIM    =& $rs['iprim']; // prim-th root of 1, index form

			$PAD      =& $rs['pad']; // the number of pad symbols in a block

			$A0       =& $NN;

			$parity = array_fill(0, $NROOTS, 0);

			for ($i=0; $i < ($NN - $NROOTS - $PAD); $i++) {

				$feedback = $INDEX_OF[$data[$i] ^ $parity[0]];

				if ($feedback != $A0) {

					// feedback term is non-zero

					// This line is unnecessary when GENPOLY[NROOTS] is unity, as it must

					// always be for the polynomials constructed by init_rs()

					$feedback = $this->modnn($rs, $NN - $GENPOLY[$NROOTS] + $feedback);

					for ($j=1; $j < $NROOTS; ++$j) {

					$parity[$j] ^= $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[($NROOTS - $j)])];

					}

				}

				// Shift

				array_shift($parity);

				if ($feedback != $A0) {

					array_push($parity, $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[0])]);

				} else {

					array_push($parity, 0);

				}

			}

			return $parity;

		}



	} // end QRcode class



} // END OF "class_exists QRcode"

?>

