QRspec

Complexity

Total Complexity

69

Size/Duplication

Total Lines	551
Duplicated Lines	6.35 %

Coupling/Cohesion

Components	3
Dependencies	1

Importance

Changes

0

27 Methods

Rating	Name	Duplication	Size	Complexity
A	getDataLength()	0	4	1
A	getECCLength()	0	4	1
A	getWidth()	0	4	1
A	getRemainder()	0	4	1
A	getMinimumVersion()	0	11	3
A	lengthIndicator()	7	15	4
A	maximumWords()	7	22	5
A	getEccSpec()	0	25	3
A	putAlignmentMarker()	0	17	2
B	putAlignmentPattern()	9	36	7
A	getVersionPattern()	0	7	3
A	getFormatInfo()	0	10	5
A	putFinderPattern()	0	16	2
C	createFrame()	12	76	9
A	debug()	0	52	4
A	serial()	0	4	1
A	unserial()	0	4	1
B	newFrame()	0	26	7
A	rsBlockNum()	0	1	1
A	rsBlockNum1()	0	1	1
A	rsDataCodes1()	0	1	1
A	rsEccCodes1()	0	1	1
A	rsBlockNum2()	0	1	1
A	rsDataCodes2()	0	1	1
A	rsEccCodes2()	0	1	1
A	rsDataLength()	0	1	1
A	rsEccLength()	0	1	1

<?php

/*
 * PHP QR Code encoder
 *
 * This file contains MERGED version of PHP QR Code library.
 * It was auto-generated from full version for your convenience.
 *
 * This merged version was configured to not requre any external files,
 * with disabled cache, error loging and weker but faster mask matching.
 * If you need tune it up please use non-merged version.
 *
 * For full version, documentation, examples of use please visit:
 *
 *    http://phpqrcode.sourceforge.net/
 *    https://sourceforge.net/projects/phpqrcode/
 *
 * 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
 */
 
 

/*
 * Version: 1.1.4
 * Build: 2010100721
 */



//---- qrconst.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));
		}
	}	



//---- merged_config.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Config file, tuned-up for merged verion
 */
     
	define('QR_CACHEABLE', false);       // use cache - more disk reads but less CPU power, masks and format templates are stored there
	define('QR_CACHE_DIR', false);       // used when QR_CACHEABLE === true
	define('QR_LOG_DIR', false);         // default error logs dir   
    
	define('QR_FIND_BEST_MASK', true);                                                          // 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_FROM_RANDOM', 2);                                                       // if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
	define('QR_DEFAULT_MASK', 2);                                                               // when QR_FIND_BEST_MASK === false
                                                  
	define('QR_PNG_MAXIMUM_SIZE',  1024);                                                       // maximum allowed png image width (in pixels), tune to make sure GD and PHP can handle such big images
                                                  



//---- qrtools.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Toolset, handy and debug utilites.
 *
 * 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
 */

	class QRtools {
    
		//----------------------------------------------------------------------
		public static function binarize($frame)
		{
			$len = count($frame);
			foreach ($frame as &$frameLine) {
                
				for($i=0; $i<$len; $i++) {
					$frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
				}
			}
            
			return $frame;
		}
        
		//----------------------------------------------------------------------
		public static function tcpdfBarcodeArray($code, $mode = 'QR,L', $tcPdfVersion = '4.5.037')

The parameter $tcPdfVersion is not used and could be removed.

		{
			$barcode_array = array();
            
			if (!is_array($mode))
				$mode = explode(',', $mode);
                
			$eccLevel = 'L';
                
			if (count($mode) > 1) {
				$eccLevel = $mode[1];
			}
                
			$qrTab = QRcode::text($code, false, $eccLevel);
			$size = count($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;
			}
                    
			return $barcode_array;
		}
        
		//----------------------------------------------------------------------
		public static function clearCache()
		{
			self::$frames = array();
		}
        
		//----------------------------------------------------------------------
		public static function buildCache()
		{
			QRtools::markTime('before_build_cache');
			
			$mask = new QRmask();
			for ($a=1; $a <= QRSPEC_VERSION_MAX; $a++) {
				$frame = QRspec::newFrame($a);
				if (QR_IMAGE) {
					$fileName = QR_CACHE_DIR.'frame_'.$a.'.png';
					QRimage::png(self::binarize($frame), $fileName, 1, 0);

$fileName is of type string, but the function expects a boolean.

				}
				
				$width = count($frame);
				$bitMask = array_fill(0, $width, array_fill(0, $width, 0));
				for ($maskNo = 0; $maskNo < 8; $maskNo++)
					$mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);
			}
			
			QRtools::markTime('after_build_cache');
		}

		//----------------------------------------------------------------------
		public static function log($outfile, $err)
		{
			if (QR_LOG_DIR !== false) {
				if ($err != '') {
					if ($outfile !== false) {
						file_put_contents(QR_LOG_DIR.basename($outfile).'-errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
					} else {
						file_put_contents(QR_LOG_DIR.'errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
					}
				}    
			}
		}
        
		//----------------------------------------------------------------------
		public static function dumpMask($frame) 
		{
			$width = count($frame);
			for($y=0;$y<$width;$y++) {
				for($x=0;$x<$width;$x++) {
					echo ord($frame[$y][$x]).',';
				}
			}
		}
        
		//----------------------------------------------------------------------
		public static function markTime($markerId)
		{
			list($usec, $sec) = explode(" ", microtime());
			$time = ((float)$usec + (float)$sec);
            
			if (!isset($GLOBALS['qr_time_bench']))
				$GLOBALS['qr_time_bench'] = array();
            
			$GLOBALS['qr_time_bench'][$markerId] = $time;
		}
        
		//----------------------------------------------------------------------
		public static function timeBenchmark()
		{
			self::markTime('finish');
        
			$lastTime = 0;
			$startTime = 0;
			$p = 0;

			echo '<table cellpadding="3" cellspacing="1">
                    <thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>
                    <tbody>';

			foreach($GLOBALS['qr_time_bench'] as $markerId=>$thisTime) {
				if ($p > 0) {
					echo '<tr><th style="text-align:right">till '.$markerId.': </th><td>'.number_format($thisTime-$lastTime, 6).'s</td></tr>';
				} else {
					$startTime = $thisTime;
				}
                
				$p++;
				$lastTime = $thisTime;
			}
            
			echo '</tbody><tfoot>
                <tr style="border-top:2px solid black"><th style="text-align:right">TOTAL: </th><td>'.number_format($lastTime-$startTime, 6).'s</td></tr>
            </tfoot>
            </table>';
		}
        
	}
    
	//##########################################################################
    
	QRtools::markTime('start');
    



//---- qrspec.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * QR Code specifications
 *
 * 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>
 *
 * The following data / specifications are taken from
 * "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)
 *  or
 * "Automatic identification and data capture techniques -- 
 *  QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)
 *
 * 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
 */
 
	define('QRSPEC_VERSION_MAX', 40);
	define('QRSPEC_WIDTH_MAX',   177);

	define('QRCAP_WIDTH',        0);
	define('QRCAP_WORDS',        1);
	define('QRCAP_REMINDER',     2);
	define('QRCAP_EC',           3);

	class QRspec {
    
		public static $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
		);
        
		//----------------------------------------------------------------------
		public static function getDataLength($version, $level)
		{
			return self::$capacity[$version][QRCAP_WORDS] - self::$capacity[$version][QRCAP_EC][$level];
		}
        
		//----------------------------------------------------------------------
		public static function getECCLength($version, $level)
		{
			return self::$capacity[$version][QRCAP_EC][$level];
		}
        
		//----------------------------------------------------------------------
		public static function getWidth($version)
		{
			return self::$capacity[$version][QRCAP_WIDTH];
		}
        
		//----------------------------------------------------------------------
		public static function getRemainder($version)
		{
			return self::$capacity[$version][QRCAP_REMINDER];
		}
        
		//----------------------------------------------------------------------
		public static function getMinimumVersion($size, $level)
		{

			for($i=1; $i<= QRSPEC_VERSION_MAX; $i++) {
				$words  = self::$capacity[$i][QRCAP_WORDS] - self::$capacity[$i][QRCAP_EC][$level];
				if($words >= $size) 
					return $i;
			}

			return -1;
		}
    
		//######################################################################
        
		public static $lengthTableBits = array(
			array(10, 12, 14),
			array( 9, 11, 13),
			array( 8, 16, 16),
			array( 8, 10, 12)
		);
        
		//----------------------------------------------------------------------
		public static function lengthIndicator($mode, $version)
		{
			if ($mode == QR_MODE_STRUCTURE)
				return 0;
                
			if ($version <= 9) {

This code seems to be duplicated across your project.

				$l = 0;
			} else if ($version <= 26) {
				$l = 1;
			} else {
				$l = 2;
			}

			return self::$lengthTableBits[$mode][$l];
		}
        
		//----------------------------------------------------------------------
		public static function maximumWords($mode, $version)
		{
			if($mode == QR_MODE_STRUCTURE) 
				return 3;
                
			if($version <= 9) {

This code seems to be duplicated across your project.

				$l = 0;
			} else if($version <= 26) {
				$l = 1;
			} else {
				$l = 2;
			}

			$bits = self::$lengthTableBits[$mode][$l];
			$words = (1 << $bits) - 1;
            
			if($mode == QR_MODE_KANJI) {
				$words *= 2; // the number of bytes is required
			}

			return $words;
		}

		// Error correction code -----------------------------------------------
		// Table of the error correction code (Reed-Solomon block)
		// See Table 12-16 (pp.30-36), JIS X0510:2004.

		public static $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
		);                                                                       

		//----------------------------------------------------------------------
		// CACHEABLE!!!
        
		public static function getEccSpec($version, $level, array &$spec)
		{
			if (count($spec) < 5) {
				$spec = array(0,0,0,0,0);
			}

			$b1   = self::$eccTable[$version][$level][0];
			$b2   = self::$eccTable[$version][$level][1];
			$data = self::getDataLength($version, $level);
			$ecc  = self::getECCLength($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;
			}
		}

		// Alignment pattern ---------------------------------------------------

		// 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.
         
		public static $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
		);                                                                                  

        
		/** --------------------------------------------------------------------
		 * Put an alignment marker.
		 * @param frame
		 * @param width
		 * @param ox,oy center coordinate of the pattern
		 */
		public static function putAlignmentMarker(array &$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; $y++) {
				QRstr::set($frame, $xStart, $yStart+$y, $finder[$y]);
			}
		}

		//----------------------------------------------------------------------
		public static function putAlignmentPattern($version, &$frame, $width)
		{
			if($version < 2)
				return;

			$d = self::$alignmentPattern[$version][1] - self::$alignmentPattern[$version][0];
			if($d < 0) {
				$w = 2;
			} else {
				$w = (int)(($width - self::$alignmentPattern[$version][0]) / $d + 2);
			}

			if($w * $w - 3 == 1) {
				$x = self::$alignmentPattern[$version][0];
				$y = self::$alignmentPattern[$version][0];
				self::putAlignmentMarker($frame, $x, $y);
				return;
			}

			$cx = self::$alignmentPattern[$version][0];
			for($x=1; $x<$w - 1; $x++) {

This code seems to be duplicated across your project.

				self::putAlignmentMarker($frame, 6, $cx);
				self::putAlignmentMarker($frame, $cx,  6);
				$cx += $d;
			}

			$cy = self::$alignmentPattern[$version][0];
			for($y=0; $y<$w-1; $y++) {
				$cx = self::$alignmentPattern[$version][0];
				for($x=0; $x<$w-1; $x++) {

This code seems to be duplicated across your project.

					self::putAlignmentMarker($frame, $cx, $cy);
					$cx += $d;
				}
				$cy += $d;
			}
		}

		// Version information pattern -----------------------------------------

		// Version information pattern (BCH coded).
		// See Table 1 in Appendix D (pp.68) of JIS X0510:2004.
        
		// size: [QRSPEC_VERSION_MAX - 6]
		
		public static $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
		);

		//----------------------------------------------------------------------
		public static function getVersionPattern($version)
		{
			if($version < 7 || $version > QRSPEC_VERSION_MAX)
				return 0;

			return self::$versionPattern[$version -7];
		}

		// Format information --------------------------------------------------
		// See calcFormatInfo in tests/test_qrspec.c (orginal qrencode c lib)
        
		public static $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)
		);

		public static function getFormatInfo($mask, $level)
		{
			if($mask < 0 || $mask > 7)
				return 0;
                
			if($level < 0 || $level > 3)
				return 0;                

			return self::$formatInfo[$level][$mask];
		}

		// Frame ---------------------------------------------------------------
		// Cache of initial frames.
         
		public static $frames = array();

		/** --------------------------------------------------------------------
		 * Put a finder pattern.
		 * @param frame
		 * @param width
		 * @param ox,oy upper-left coordinate of the pattern
		 */
		public static 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; $y++) {
				QRstr::set($frame, $ox, $oy+$y, $finder[$y]);
			}
		}

		//----------------------------------------------------------------------
		public static function createFrame($version)
		{
			$width = self::$capacity[$version][QRCAP_WIDTH];
			$frameLine = str_repeat ("\0", $width);
			$frame = array_fill(0, $width, $frameLine);

			// Finder pattern
			self::putFinderPattern($frame, 0, 0);
			self::putFinderPattern($frame, $width - 7, 0);
			self::putFinderPattern($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);
            
			QRstr::set($frame, 0, 7, $setPattern);
			QRstr::set($frame, $width-8, 7, $setPattern);
			QRstr::set($frame, 0, $width - 8, $setPattern);
        
			// Format info
			$setPattern = str_repeat("\x84", 9);
			QRstr::set($frame, 0, 8, $setPattern);
			QRstr::set($frame, $width - 8, 8, $setPattern, 8);

8 is of type integer, but the function expects a boolean.

            
			$yOffset = $width - 8;

			for($y=0; $y<8; $y++,$yOffset++) {
				$frame[$y][8] = "\x84";
				$frame[$yOffset][8] = "\x84";
			}

			// Timing pattern  
            
			for($i=1; $i<$width-15; $i++) {
				$frame[6][7+$i] = chr(0x90 | ($i & 1));
				$frame[7+$i][6] = chr(0x90 | ($i & 1));
			}
            
			// Alignment pattern  
			self::putAlignmentPattern($version, $frame, $width);
            
			// Version information 
			if($version >= 7) {
				$vinf = self::getVersionPattern($version);

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

This code seems to be duplicated across your project.

					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++) {

This code seems to be duplicated across your project.

					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;
		}

		//----------------------------------------------------------------------
		public static function debug($frame, $binary_mode = false)
		{
			if ($binary_mode) {
            
					foreach ($frame as &$frameLine) {
						$frameLine = join('<span class="m">&nbsp;&nbsp;</span>', explode('0', $frameLine));
						$frameLine = join('&#9608;&#9608;', explode('1', $frameLine));
					}
                    
					?>
                <style>
                    .m { background-color: white; }
                </style>
                <?php
					echo '<pre><tt><br/ ><br/ ><br/ >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
					echo join("<br/ >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;", $frame);
					echo '</tt></pre><br/ ><br/ ><br/ ><br/ ><br/ ><br/ >';
            
			} else {
            
				foreach ($frame as &$frameLine) {
					$frameLine = join('<span class="m">&nbsp;</span>',  explode("\xc0", $frameLine));
					$frameLine = join('<span class="m">&#9618;</span>', explode("\xc1", $frameLine));
					$frameLine = join('<span class="p">&nbsp;</span>',  explode("\xa0", $frameLine));
					$frameLine = join('<span class="p">&#9618;</span>', explode("\xa1", $frameLine));
					$frameLine = join('<span class="s">&#9671;</span>', explode("\x84", $frameLine)); //format 0
					$frameLine = join('<span class="s">&#9670;</span>', explode("\x85", $frameLine)); //format 1
					$frameLine = join('<span class="x">&#9762;</span>', explode("\x81", $frameLine)); //special bit
					$frameLine = join('<span class="c">&nbsp;</span>',  explode("\x90", $frameLine)); //clock 0
					$frameLine = join('<span class="c">&#9719;</span>', explode("\x91", $frameLine)); //clock 1
					$frameLine = join('<span class="f">&nbsp;</span>',  explode("\x88", $frameLine)); //version
					$frameLine = join('<span class="f">&#9618;</span>', explode("\x89", $frameLine)); //version
					$frameLine = join('&#9830;', explode("\x01", $frameLine));
					$frameLine = join('&#8901;', explode("\0", $frameLine));
				}
                
				?>
                <style>
                    .p { background-color: yellow; }
                    .m { background-color: #00FF00; }
                    .s { background-color: #FF0000; }
                    .c { background-color: aqua; }
                    .x { background-color: pink; }
                    .f { background-color: gold; }
                </style>
                <?php
				echo "<pre><tt>";
				echo join("<br/ >", $frame);
				echo "</tt></pre>";
            
			}
		}

		//----------------------------------------------------------------------
		public static function serial($frame)
		{
			return gzcompress(join("\n", $frame), 9);
		}
        
		//----------------------------------------------------------------------
		public static function unserial($code)
		{
			return explode("\n", gzuncompress($code));
		}
        
		//----------------------------------------------------------------------
		public static function newFrame($version)
		{
			if($version < 1 || $version > QRSPEC_VERSION_MAX) 
				return null;

			if(!isset(self::$frames[$version])) {
                
				$fileName = QR_CACHE_DIR.'frame_'.$version.'.dat';
                
				if (QR_CACHEABLE) {
					if (file_exists($fileName)) {
						self::$frames[$version] = self::unserial(file_get_contents($fileName));
					} else {
						self::$frames[$version] = self::createFrame($version);
						file_put_contents($fileName, self::serial(self::$frames[$version]));
					}
				} else {
					self::$frames[$version] = self::createFrame($version);
				}
			}
            
			if(is_null(self::$frames[$version]))
				return null;

			return self::$frames[$version];
		}

		//----------------------------------------------------------------------
		public static function rsBlockNum($spec)     { return $spec[0] + $spec[3]; }
		public static function rsBlockNum1($spec)    { return $spec[0]; }
		public static function rsDataCodes1($spec)   { return $spec[1]; }
		public static function rsEccCodes1($spec)    { return $spec[2]; }
		public static function rsBlockNum2($spec)    { return $spec[3]; }
		public static function rsDataCodes2($spec)   { return $spec[4]; }
		public static function rsEccCodes2($spec)    { return $spec[2]; }
		public static function rsDataLength($spec)   { return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);    }
		public static function rsEccLength($spec)    { return ($spec[0] + $spec[3]) * $spec[2]; }
        
	}



//---- qrimage.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Image output of code using GD2
 *
 * 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
 */
 
	define('QR_IMAGE', true);

	class QRimage {
    
		//----------------------------------------------------------------------
		public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE) 
		{
			$image = self::image($frame, $pixelPerPoint, $outerFrame);
            
			if ($filename === false) {
				Header("Content-type: image/png");
				ImagePng($image);
			} else {
				if($saveandprint===TRUE){
					ImagePng($image, $filename);
					header("Content-type: image/png");
					ImagePng($image);
				}else{
					ImagePng($image, $filename);
				}
			}
            
			ImageDestroy($image);
		}
    
		//----------------------------------------------------------------------
		public static function jpg($frame, $filename = false, $pixelPerPoint = 8, $outerFrame = 4, $q = 85) 
		{
			$image = self::image($frame, $pixelPerPoint, $outerFrame);
            
			if ($filename === false) {
				Header("Content-type: image/jpeg");
				ImageJpeg($image, null, $q);
			} else {
				ImageJpeg($image, $filename, $q);            
			}
            
			ImageDestroy($image);
		}
    
		//----------------------------------------------------------------------
		private static function image($frame, $pixelPerPoint = 4, $outerFrame = 4) 
		{
			$h = count($frame);
			$w = strlen($frame[0]);
            
			$imgW = $w + 2*$outerFrame;
			$imgH = $h + 2*$outerFrame;
            
			$base_image =ImageCreate($imgW, $imgH);
            
			$col[0] = ImageColorAllocate($base_image,255,255,255);

$col was never initialized. Although not strictly required by PHP, it is generally a good practice to add $col = array(); before regardless.

			$col[1] = ImageColorAllocate($base_image,0,0,0);

			imagefill($base_image, 0, 0, $col[0]);

			for($y=0; $y<$h; $y++) {
				for($x=0; $x<$w; $x++) {
					if ($frame[$y][$x] == '1') {
						ImageSetPixel($base_image,$x+$outerFrame,$y+$outerFrame,$col[1]); 
					}
				}
			}
            
			$target_image =ImageCreate($imgW * $pixelPerPoint, $imgH * $pixelPerPoint);
			ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $imgW * $pixelPerPoint, $imgH * $pixelPerPoint, $imgW, $imgH);
			ImageDestroy($base_image);
            
			return $target_image;
		}
	}



//---- qrinput.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Input encoding class
 *
 * 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
 */
 
	define('STRUCTURE_HEADER_BITS',  20);
	define('MAX_STRUCTURED_SYMBOLS', 16);

	class QRinputItem {
    
		public $mode;
		public $size;
		public $data;
		public $bstream;

		public function __construct($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(!QRinput::check($mode, $size, $setData)) {
				throw new Exception('Error m:'.$mode.',s:'.$size.',d:'.join(',',$setData));
				return null;

return null; does not seem to be reachable.

			}
            
			$this->mode = $mode;
			$this->size = $size;
			$this->data = $setData;
			$this->bstream = $bstream;
		}
        
		//----------------------------------------------------------------------
		public function encodeModeNum($version)
		{
			try {
            
				$words = (int)($this->size / 3);
				$bs = new QRbitstream();
                
				$val = 0x1;
				$bs->appendNum(4, $val);
				$bs->appendNum(QRspec::lengthIndicator(QR_MODE_NUM, $version), $this->size);

				for($i=0; $i<$words; $i++) {
					$val  = (ord($this->data[$i*3  ]) - ord('0')) * 100;
					$val += (ord($this->data[$i*3+1]) - ord('0')) * 10;
					$val += (ord($this->data[$i*3+2]) - ord('0'));
					$bs->appendNum(10, $val);
				}

				if($this->size - $words * 3 == 1) {
					$val = ord($this->data[$words*3]) - ord('0');
					$bs->appendNum(4, $val);
				} else if($this->size - $words * 3 == 2) {
					$val  = (ord($this->data[$words*3  ]) - ord('0')) * 10;
					$val += (ord($this->data[$words*3+1]) - ord('0'));
					$bs->appendNum(7, $val);
				}

				$this->bstream = $bs;
				return 0;
                
			} catch (Exception $e) {
				return -1;
			}
		}
        
		//----------------------------------------------------------------------
		public function encodeModeAn($version)
		{
			try {
				$words = (int)($this->size / 2);
				$bs = new QRbitstream();
                
				$bs->appendNum(4, 0x02);
				$bs->appendNum(QRspec::lengthIndicator(QR_MODE_AN, $version), $this->size);

				for($i=0; $i<$words; $i++) {
					$val  = (int)QRinput::lookAnTable(ord($this->data[$i*2  ])) * 45;
					$val += (int)QRinput::lookAnTable(ord($this->data[$i*2+1]));

					$bs->appendNum(11, $val);
				}

				if($this->size & 1) {
					$val = QRinput::lookAnTable(ord($this->data[$words * 2]));
					$bs->appendNum(6, $val);
				}
        
				$this->bstream = $bs;
				return 0;
            
			} catch (Exception $e) {
				return -1;
			}
		}
        
		//----------------------------------------------------------------------
		public function encodeMode8($version)
		{
			try {
				$bs = new QRbitstream();

				$bs->appendNum(4, 0x4);
				$bs->appendNum(QRspec::lengthIndicator(QR_MODE_8, $version), $this->size);

				for($i=0; $i<$this->size; $i++) {
					$bs->appendNum(8, ord($this->data[$i]));
				}

				$this->bstream = $bs;
				return 0;
            
			} catch (Exception $e) {
				return -1;
			}
		}
        
		//----------------------------------------------------------------------
		public function encodeModeKanji($version)
		{
			try {

				$bs = new QRbitrtream();
                
				$bs->appendNum(4, 0x8);
				$bs->appendNum(QRspec::lengthIndicator(QR_MODE_KANJI, $version), (int)($this->size / 2));

				for($i=0; $i<$this->size; $i+=2) {
					$val = (ord($this->data[$i]) << 8) | ord($this->data[$i+1]);
					if($val <= 0x9ffc) {
						$val -= 0x8140;
					} else {
						$val -= 0xc140;
					}
                    
					$h = ($val >> 8) * 0xc0;
					$val = ($val & 0xff) + $h;

					$bs->appendNum(13, $val);
				}

				$this->bstream = $bs;
				return 0;
            
			} catch (Exception $e) {
				return -1;
			}
		}

		//----------------------------------------------------------------------
		public function encodeModeStructure()
		{
			try {
				$bs =  new QRbitstream();
                
				$bs->appendNum(4, 0x03);
				$bs->appendNum(4, ord($this->data[1]) - 1);
				$bs->appendNum(4, ord($this->data[0]) - 1);
				$bs->appendNum(8, ord($this->data[2]));

				$this->bstream = $bs;
				return 0;
            
			} catch (Exception $e) {
				return -1;
			}
		}
        
		//----------------------------------------------------------------------
		public function estimateBitStreamSizeOfEntry($version)
		{
			$bits = 0;

$bits is not used, you could remove the assignment.

			if($version == 0) 
				$version = 1;

			switch($this->mode) {
				case QR_MODE_NUM:        $bits = QRinput::estimateBitsModeNum($this->size);    break;
				case QR_MODE_AN:        $bits = QRinput::estimateBitsModeAn($this->size);    break;
				case QR_MODE_8:            $bits = QRinput::estimateBitsMode8($this->size);    break;
				case QR_MODE_KANJI:        $bits = QRinput::estimateBitsModeKanji($this->size);break;
				case QR_MODE_STRUCTURE:    return STRUCTURE_HEADER_BITS;            
				default:
					return 0;
			}

			$l = QRspec::lengthIndicator($this->mode, $version);
			$m = 1 << $l;
			$num = (int)(($this->size + $m - 1) / $m);

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

			return $bits;
		}
        
		//----------------------------------------------------------------------
		public function encodeBitStream($version)
		{
			try {
            
				unset($this->bstream);
				$words = QRspec::maximumWords($this->mode, $version);
                
				if($this->size > $words) {
                
					$st1 = new QRinputItem($this->mode, $words, $this->data);
					$st2 = new QRinputItem($this->mode, $this->size - $words, array_slice($this->data, $words));

					$st1->encodeBitStream($version);
					$st2->encodeBitStream($version);
                    
					$this->bstream = new QRbitstream();
					$this->bstream->append($st1->bstream);
					$this->bstream->append($st2->bstream);
                    
					unset($st1);
					unset($st2);
                    
				} else {
                    
					$ret = 0;
                    
					switch($this->mode) {
						case QR_MODE_NUM:        $ret = $this->encodeModeNum($version);    break;
						case QR_MODE_AN:        $ret = $this->encodeModeAn($version);    break;
						case QR_MODE_8:            $ret = $this->encodeMode8($version);    break;
						case QR_MODE_KANJI:        $ret = $this->encodeModeKanji($version);break;
						case QR_MODE_STRUCTURE:    $ret = $this->encodeModeStructure();    break;
                        
						default:
							break;
					}
                    
					if($ret < 0)
						return -1;
				}

				return $this->bstream->size();
            
			} catch (Exception $e) {
				return -1;
			}
		}
	};
    
	//##########################################################################

	class QRinput {

		public $items;
        
		private $version;
		private $level;
        
		//----------------------------------------------------------------------
		public function __construct($version = 0, $level = QR_ECLEVEL_L)
		{
			if ($version < 0 || $version > QRSPEC_VERSION_MAX || $level > QR_ECLEVEL_H) {
				throw new Exception('Invalid version no');
				return NULL;

return NULL; does not seem to be reachable.

			}
            
			$this->version = $version;
			$this->level = $level;
		}
        
		//----------------------------------------------------------------------
		public function getVersion()
		{
			return $this->version;
		}
        
		//----------------------------------------------------------------------
		public function setVersion($version)
		{
			if($version < 0 || $version > QRSPEC_VERSION_MAX) {
				throw new Exception('Invalid version no');
				return -1;

return -1; does not seem to be reachable.

			}

			$this->version = $version;

			return 0;
		}
        
		//----------------------------------------------------------------------
		public function getErrorCorrectionLevel()
		{
			return $this->level;
		}

		//----------------------------------------------------------------------
		public function setErrorCorrectionLevel($level)
		{
			if($level > QR_ECLEVEL_H) {
				throw new Exception('Invalid ECLEVEL');
				return -1;

return -1; does not seem to be reachable.

			}

			$this->level = $level;

			return 0;
		}
        
		//----------------------------------------------------------------------
		public function appendEntry(QRinputItem $entry)
		{
			$this->items[] = $entry;
		}
        
		//----------------------------------------------------------------------
		public function append($mode, $size, $data)
		{
			try {
				$entry = new QRinputItem($mode, $size, $data);
				$this->items[] = $entry;
				return 0;
			} catch (Exception $e) {
				return -1;
			}
		}
        
		//----------------------------------------------------------------------
        
		public function insertStructuredAppendHeader($size, $index, $parity)
		{
			if( $size > MAX_STRUCTURED_SYMBOLS ) {
				throw new Exception('insertStructuredAppendHeader wrong size');
			}
            
			if( $index <= 0 || $index > MAX_STRUCTURED_SYMBOLS ) {
				throw new Exception('insertStructuredAppendHeader wrong index');
			}

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

$buf is not used, you could remove the assignment.

            
			try {
				$entry = new QRinputItem(QR_MODE_STRUCTURE, 3, buf);
				array_unshift($this->items, $entry);
				return 0;
			} catch (Exception $e) {
				return -1;
			}
		}

		//----------------------------------------------------------------------
		public function calcParity()
		{
			$parity = 0;
            
			foreach($this->items as $item) {
				if($item->mode != QR_MODE_STRUCTURE) {
					for($i=$item->size-1; $i>=0; $i--) {
						$parity ^= $item->data[$i];
					}
				}
			}

			return $parity;
		}
        
		//----------------------------------------------------------------------
		public static function checkModeNum($size, $data)
		{
			for($i=0; $i<$size; $i++) {
				if((ord($data[$i]) < ord('0')) || (ord($data[$i]) > ord('9'))){
					return false;
				}
			}

			return true;
		}

		//----------------------------------------------------------------------
		public static 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;
		}
        
		//----------------------------------------------------------------------
		public static $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
		);
        
		//----------------------------------------------------------------------
		public static function lookAnTable($c)
		{
			return (($c > 127)?-1:self::$anTable[$c]);
		}
        
		//----------------------------------------------------------------------
		public static function checkModeAn($size, $data)
		{
			for($i=0; $i<$size; $i++) {
				if (self::lookAnTable(ord($data[$i])) == -1) {
					return false;
				}
			}

			return true;
		}
        
		//----------------------------------------------------------------------
		public static function estimateBitsModeAn($size)
		{
			$w = (int)($size / 2);
			$bits = $w * 11;
            
			if($size & 1) {
				$bits += 6;
			}

			return $bits;
		}
    
		//----------------------------------------------------------------------
		public static function estimateBitsMode8($size)
		{
			return $size * 8;
		}
        
		//----------------------------------------------------------------------
		public function estimateBitsModeKanji($size)
		{
			return (int)(($size / 2) * 13);
		}
        
		//----------------------------------------------------------------------
		public static 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( $val < 0x8140 
				|| ($val > 0x9ffc && $val < 0xe040) 
				|| $val > 0xebbf) {
					return false;
				}
			}

			return true;
		}

		/***********************************************************************
         * Validation
         **********************************************************************/

		public static function check($mode, $size, $data)
		{
			if($size <= 0) 
				return false;

			switch($mode) {
				case QR_MODE_NUM:       return self::checkModeNum($size, $data);   break;

break is not strictly necessary here and could be removed.

				case QR_MODE_AN:        return self::checkModeAn($size, $data);    break;

break is not strictly necessary here and could be removed.

				case QR_MODE_KANJI:     return self::checkModeKanji($size, $data); break;

break is not strictly necessary here and could be removed.

				case QR_MODE_8:         return true; break;

break is not strictly necessary here and could be removed.

				case QR_MODE_STRUCTURE: return true; break;

break is not strictly necessary here and could be removed.

                
				default:
					break;
			}

			return false;
		}
        
        
		//----------------------------------------------------------------------
		public function estimateBitStreamSize($version)
		{
			$bits = 0;

			foreach($this->items as $item) {
				$bits += $item->estimateBitStreamSizeOfEntry($version);
			}

			return $bits;
		}
        
		//----------------------------------------------------------------------
		public function estimateVersion()
		{
			$version = 0;
			$prev = 0;

$prev is not used, you could remove the assignment.

			do {
				$prev = $version;
				$bits = $this->estimateBitStreamSize($prev);
				$version = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);
				if ($version < 0) {
					return -1;
				}
			} while ($version > $prev);

			return $version;
		}
        
		//----------------------------------------------------------------------
		public static function lengthOfCode($mode, $version, $bits)
		{
			$payload = $bits - 4 - QRspec::lengthIndicator($mode, $version);
			switch($mode) {
				case QR_MODE_NUM:
					$chunks = (int)($payload / 10);
					$remain = $payload - $chunks * 10;
					$size = $chunks * 3;
					if($remain >= 7) {
						$size += 2;
					} else if($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_8:
					$size = (int)($payload / 8);
					break;
				case QR_MODE_KANJI:
					$size = (int)(($payload / 13) * 2);
					break;
				case QR_MODE_STRUCTURE:
					$size = (int)($payload / 8);
					break;
				default:
					$size = 0;
					break;
			}
            
			$maxsize = QRspec::maximumWords($mode, $version);
			if($size < 0) $size = 0;
			if($size > $maxsize) $size = $maxsize;

			return $size;
		}
        
		//----------------------------------------------------------------------
		public function createBitStream()
		{
			$total = 0;

			foreach($this->items as $item) {
				$bits = $item->encodeBitStream($this->version);
                
				if($bits < 0) 
					return -1;
                    
				$total += $bits;
			}

			return $total;
		}
        
		//----------------------------------------------------------------------
		public function convertData()
		{
			$ver = $this->estimateVersion();
			if($ver > $this->getVersion()) {
				$this->setVersion($ver);
			}

			for(;;) {
				$bits = $this->createBitStream();
                
				if($bits < 0) 
					return -1;
                    
				$ver = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);
				if($ver < 0) {
					throw new Exception('WRONG VERSION');
					return -1;

return -1; does not seem to be reachable.

				} else if($ver > $this->getVersion()) {
					$this->setVersion($ver);
				} else {
					break;
				}
			}

			return 0;
		}
        
		//----------------------------------------------------------------------
		public function appendPaddingBit(&$bstream)
		{
			$bits = $bstream->size();
			$maxwords = QRspec::getDataLength($this->version, $this->level);
			$maxbits = $maxwords * 8;

			if ($maxbits == $bits) {
				return 0;
			}

			if ($maxbits - $bits < 5) {
				return $bstream->appendNum($maxbits - $bits, 0);
			}

			$bits += 4;
			$words = (int)(($bits + 7) / 8);

			$padding = new QRbitstream();
			$ret = $padding->appendNum($words * 8 - $bits + 4, 0);
            
			if($ret < 0) 
				return $ret;

			$padlen = $maxwords - $words;
            
			if($padlen > 0) {
                
				$padbuf = array();
				for($i=0; $i<$padlen; $i++) {
					$padbuf[$i] = ($i&1)?0x11:0xec;
				}
                
				$ret = $padding->appendBytes($padlen, $padbuf);
                
				if($ret < 0)
					return $ret;
                
			}

			$ret = $bstream->append($padding);
            
			return $ret;
		}

		//----------------------------------------------------------------------
		public function mergeBitStream()
		{
			if($this->convertData() < 0) {
				return null;
			}

			$bstream = new QRbitstream();
            
			foreach($this->items as $item) {
				$ret = $bstream->append($item->bstream);
				if($ret < 0) {
					return null;
				}
			}

			return $bstream;
		}

		//----------------------------------------------------------------------
		public function getBitStream()
		{

			$bstream = $this->mergeBitStream();
            
			if($bstream == null) {
				return null;
			}
            
			$ret = $this->appendPaddingBit($bstream);
			if($ret < 0) {
				return null;
			}

			return $bstream;
		}
        
		//----------------------------------------------------------------------
		public function getByteStream()
		{
			$bstream = $this->getBitStream();
			if($bstream == null) {
				return null;
			}
            
			return $bstream->toByte();
		}
	}
        
        
    



//---- qrbitstream.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Bitstream class
 *
 * 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
 */
     
	class QRbitstream {
    
		public $data = array();
        
		//----------------------------------------------------------------------
		public function size()
		{
			return count($this->data);
		}
        
		//----------------------------------------------------------------------
		public function allocate($setLength)
		{
			$this->data = array_fill(0, $setLength, 0);
			return 0;
		}
    
		//----------------------------------------------------------------------
		public static function newFromNum($bits, $num)
		{
			$bstream = new QRbitstream();
			$bstream->allocate($bits);
            
			$mask = 1 << ($bits - 1);
			for($i=0; $i<$bits; $i++) {

This code seems to be duplicated across your project.

				if($num & $mask) {
					$bstream->data[$i] = 1;
				} else {
					$bstream->data[$i] = 0;
				}
				$mask = $mask >> 1;
			}

			return $bstream;
		}
        
		//----------------------------------------------------------------------
		public static function newFromBytes($size, $data)
		{
			$bstream = new QRbitstream();
			$bstream->allocate($size * 8);
			$p=0;

			for($i=0; $i<$size; $i++) {
				$mask = 0x80;
				for($j=0; $j<8; $j++) {

This code seems to be duplicated across your project.

					if($data[$i] & $mask) {
						$bstream->data[$p] = 1;
					} else {
						$bstream->data[$p] = 0;
					}
					$p++;
					$mask = $mask >> 1;
				}
			}

			return $bstream;
		}
        
		//----------------------------------------------------------------------
		public function append(QRbitstream $arg)
		{
			if (is_null($arg)) {
				return -1;
			}
            
			if($arg->size() == 0) {
				return 0;
			}
            
			if($this->size() == 0) {
				$this->data = $arg->data;
				return 0;
			}
            
			$this->data = array_values(array_merge($this->data, $arg->data));

			return 0;
		}
        
		//----------------------------------------------------------------------
		public function appendNum($bits, $num)

This method seems to be duplicated in your project.

		{
			if ($bits == 0) 
				return 0;

			$b = QRbitstream::newFromNum($bits, $num);
            
			if(is_null($b))
				return -1;

			$ret = $this->append($b);
			unset($b);

			return $ret;
		}

		//----------------------------------------------------------------------
		public function appendBytes($size, $data)

This method seems to be duplicated in your project.

		{
			if ($size == 0) 
				return 0;

			$b = QRbitstream::newFromBytes($size, $data);
            
			if(is_null($b))
				return -1;

			$ret = $this->append($b);
			unset($b);

			return $ret;
		}
        
		//----------------------------------------------------------------------
		public function toByte()
		{
        
			$size = $this->size();

			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++) {

This code seems to be duplicated across your project.

					$v = $v << 1;
					$v |= $this->data[$p];
					$p++;
				}
				$data[$i] = $v;
			}
            
			if($size & 7) {
				$v = 0;
				for($j=0; $j<($size & 7); $j++) {

This code seems to be duplicated across your project.

					$v = $v << 1;
					$v |= $this->data[$p];
					$p++;
				}
				$data[$bytes] = $v;
			}

			return $data;
		}

	}




//---- qrsplit.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Input splitting classes
 *
 * 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>
 *
 * The following data / specifications are taken from
 * "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)
 *  or
 * "Automatic identification and data capture techniques -- 
 *  QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)
 *
 * 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
 */
	class QRsplit {

		public $dataStr = '';
		public $input;
		public $modeHint;

		//----------------------------------------------------------------------
		public function __construct($dataStr, $input, $modeHint) 
		{
			$this->dataStr  = $dataStr;
			$this->input    = $input;
			$this->modeHint = $modeHint;
		}
        
		//----------------------------------------------------------------------
		public static function isdigitat($str, $pos)
		{    
			if ($pos >= strlen($str))
				return false;
            
			return ((ord($str[$pos]) >= ord('0'))&&(ord($str[$pos]) <= ord('9')));
		}
        
		//----------------------------------------------------------------------
		public static function isalnumat($str, $pos)
		{
			if ($pos >= strlen($str))
				return false;
                
			return (QRinput::lookAnTable(ord($str[$pos])) >= 0);
		}

		//----------------------------------------------------------------------
		public function identifyMode($pos)
		{
			if ($pos >= strlen($this->dataStr)) 
				return QR_MODE_NUL;
                
			$c = $this->dataStr[$pos];
            
			if(self::isdigitat($this->dataStr, $pos)) {
				return QR_MODE_NUM;
			} else if(self::isalnumat($this->dataStr, $pos)) {
				return QR_MODE_AN;
			} else if($this->modeHint == QR_MODE_KANJI) {
            
				if ($pos+1 < strlen($this->dataStr)) 
				{
					$d = $this->dataStr[$pos+1];
					$word = (ord($c) << 8) | ord($d);
					if(($word >= 0x8140 && $word <= 0x9ffc) || ($word >= 0xe040 && $word <= 0xebbf)) {
						return QR_MODE_KANJI;
					}
				}
			}

			return QR_MODE_8;
		} 
        
		//----------------------------------------------------------------------
		public function eatNum()
		{
			$ln = QRspec::lengthIndicator(QR_MODE_NUM, $this->input->getVersion());

			$p = 0;
			while(self::isdigitat($this->dataStr, $p)) {
				$p++;
			}
            
			$run = $p;
			$mode = $this->identifyMode($p);
            
			if($mode == QR_MODE_8) {

This code seems to be duplicated across your project.

				$dif = QRinput::estimateBitsModeNum($run) + 4 + $ln
					 + QRinput::estimateBitsMode8(1)         // + 4 + l8
					 - QRinput::estimateBitsMode8($run + 1); // - 4 - l8
				if($dif > 0) {
					return $this->eat8();
				}
			}
			if($mode == QR_MODE_AN) {

This code seems to be duplicated across your project.

				$dif = QRinput::estimateBitsModeNum($run) + 4 + $ln
					 + QRinput::estimateBitsModeAn(1)        // + 4 + la
					 - QRinput::estimateBitsModeAn($run + 1);// - 4 - la
				if($dif > 0) {
					return $this->eatAn();
				}
			}
            
			$ret = $this->input->append(QR_MODE_NUM, $run, str_split($this->dataStr));
			if($ret < 0)
				return -1;

			return $run;
		}
        
		//----------------------------------------------------------------------
		public function eatAn()
		{
			$la = QRspec::lengthIndicator(QR_MODE_AN,  $this->input->getVersion());
			$ln = QRspec::lengthIndicator(QR_MODE_NUM, $this->input->getVersion());

			$p = 0;
            
			while(self::isalnumat($this->dataStr, $p)) {
				if(self::isdigitat($this->dataStr, $p)) {

This code seems to be duplicated across your project.

					$q = $p;
					while(self::isdigitat($this->dataStr, $q)) {
						$q++;
					}
                    
					$dif = QRinput::estimateBitsModeAn($p) // + 4 + la
						 + QRinput::estimateBitsModeNum($q - $p) + 4 + $ln
						 - QRinput::estimateBitsModeAn($q); // - 4 - la
                         
					if($dif < 0) {
						break;
					} else {
						$p = $q;
					}
				} else {
					$p++;
				}
			}

			$run = $p;

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

This code seems to be duplicated across your project.

				$dif = QRinput::estimateBitsModeAn($run) + 4 + $la
					 + QRinput::estimateBitsMode8(1) // + 4 + l8
					  - QRinput::estimateBitsMode8($run + 1); // - 4 - l8
				if($dif > 0) {
					return $this->eat8();
				}
			}

			$ret = $this->input->append(QR_MODE_AN, $run, str_split($this->dataStr));
			if($ret < 0)
				return -1;

			return $run;
		}
        
		//----------------------------------------------------------------------
		public function eatKanji()
		{
			$p = 0;
            
			while($this->identifyMode($p) == QR_MODE_KANJI) {
				$p += 2;
			}
            
			$ret = $this->input->append(QR_MODE_KANJI, $p, str_split($this->dataStr));
			if($ret < 0)
				return -1;

			return $run;

The variable $run does not exist. Did you forget to declare it?

		}

		//----------------------------------------------------------------------
		public function eat8()
		{
			$la = QRspec::lengthIndicator(QR_MODE_AN, $this->input->getVersion());
			$ln = QRspec::lengthIndicator(QR_MODE_NUM, $this->input->getVersion());

			$p = 1;
			$dataStrLen = strlen($this->dataStr);
            
			while($p < $dataStrLen) {
                
				$mode = $this->identifyMode($p);
				if($mode == QR_MODE_KANJI) {
					break;
				}
				if($mode == QR_MODE_NUM) {
					$q = $p;
					while(self::isdigitat($this->dataStr, $q)) {
						$q++;
					}
					$dif = QRinput::estimateBitsMode8($p) // + 4 + l8
						 + QRinput::estimateBitsModeNum($q - $p) + 4 + $ln
						 - QRinput::estimateBitsMode8($q); // - 4 - l8
					if($dif < 0) {
						break;
					} else {
						$p = $q;
					}
				} else if($mode == QR_MODE_AN) {

This code seems to be duplicated across your project.

					$q = $p;
					while(self::isalnumat($this->dataStr, $q)) {
						$q++;
					}
					$dif = QRinput::estimateBitsMode8($p)  // + 4 + l8
						 + QRinput::estimateBitsModeAn($q - $p) + 4 + $la
						 - QRinput::estimateBitsMode8($q); // - 4 - l8
					if($dif < 0) {
						break;
					} else {
						$p = $q;
					}
				} else {
					$p++;
				}
			}

			$run = $p;
			$ret = $this->input->append(QR_MODE_8, $run, str_split($this->dataStr));
            
			if($ret < 0)
				return -1;

			return $run;
		}

		//----------------------------------------------------------------------
		public function splitString()
		{
			while (strlen($this->dataStr) > 0)
			{
				if($this->dataStr == '')
					return 0;

				$mode = $this->identifyMode(0);
                
				switch ($mode) {
					case QR_MODE_NUM: $length = $this->eatNum(); break;
					case QR_MODE_AN:  $length = $this->eatAn(); break;
					case QR_MODE_KANJI:
						if ($hint == QR_MODE_KANJI)

The variable $hint does not exist. Did you forget to declare it?

								$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);
			}
		}

		//----------------------------------------------------------------------
		public function toUpper()
		{
			$stringLen = strlen($this->dataStr);
			$p = 0;
            
			while ($p<$stringLen) {
				$mode = self::identifyMode(substr($this->dataStr, $p), $this->modeHint);

The call to QRsplit::identifyMode() has too many arguments starting with $this->modeHint.

				if($mode == QR_MODE_KANJI) {
					$p += 2;
				} else {
					if (ord($this->dataStr[$p]) >= ord('a') && ord($this->dataStr[$p]) <= ord('z')) {
						$this->dataStr[$p] = chr(ord($this->dataStr[$p]) - 32);
					}
					$p++;
				}
			}

			return $this->dataStr;
		}

		//----------------------------------------------------------------------
		public static function splitStringToQRinput($string, QRinput $input, $modeHint, $casesensitive = true)
		{
			if(is_null($string) || $string == '\0' || $string == '') {
				throw new Exception('empty string!!!');
			}

			$split = new QRsplit($string, $input, $modeHint);
            
			if(!$casesensitive)
				$split->toUpper();
                
			return $split->splitString();
		}
	}



//---- qrrscode.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Reed-Solomon error correction support
 * 
 * Copyright (C) 2002, 2003, 2004, 2006 Phil Karn, KA9Q
 * (libfec is released under the GNU Lesser General Public License.)
 *
 * 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
 */
 
	class QRrsItem {
    
		public $mm;                  // Bits per symbol 
		public $nn;                  // Symbols per block (= (1<<mm)-1) 
		public $alpha_to = array();  // log lookup table 
		public $index_of = array();  // Antilog lookup table 
		public $genpoly = array();   // Generator polynomial 
		public $nroots;              // Number of generator roots = number of parity symbols 
		public $fcr;                 // First consecutive root, index form 
		public $prim;                // Primitive element, index form 
		public $iprim;               // prim-th root of 1, index form 
		public $pad;                 // Padding bytes in shortened block 
		public $gfpoly;
    
		//----------------------------------------------------------------------
		public function modnn($x)
		{
			while ($x >= $this->nn) {
				$x -= $this->nn;
				$x = ($x >> $this->mm) + ($x & $this->nn);
			}
            
			return $x;
		}
        
		//----------------------------------------------------------------------
		public static function init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
		{
			// Common code for intializing a Reed-Solomon control block (char or int symbols)
			// Copyright 2004 Phil Karn, KA9Q
			// May be used under the terms of the GNU Lesser General Public License (LGPL)

			$rs = null;
            
			// Check parameter ranges
			if($symsize < 0 || $symsize > 8)                     return $rs;
			if($fcr < 0 || $fcr >= (1<<$symsize))                return $rs;
			if($prim <= 0 || $prim >= (1<<$symsize))             return $rs;
			if($nroots < 0 || $nroots >= (1<<$symsize))          return $rs; // Can't have more roots than symbol values!
			if($pad < 0 || $pad >= ((1<<$symsize) -1 - $nroots)) return $rs; // Too much padding

			$rs = new QRrsItem();
			$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!
				$rs = NULL;
				return $rs;
			}

			/* 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] ^ $rs->alpha_to[$rs->modnn($rs->index_of[$rs->genpoly[$j]] + $root)];
					} else {
						$rs->genpoly[$j] = $rs->genpoly[$j-1];
					}
				}
				// rs->genpoly[0] can never be zero
				$rs->genpoly[0] = $rs->alpha_to[$rs->modnn($rs->index_of[$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;
		}
        
		//----------------------------------------------------------------------
		public function encode_rs_char($data, &$parity)
		{
			$MM       =& $this->mm;
			$NN       =& $this->nn;
			$ALPHA_TO =& $this->alpha_to;
			$INDEX_OF =& $this->index_of;
			$GENPOLY  =& $this->genpoly;
			$NROOTS   =& $this->nroots;
			$FCR      =& $this->fcr;
			$PRIM     =& $this->prim;
			$IPRIM    =& $this->iprim;
			$PAD      =& $this->pad;
			$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 = $this->modnn($NN - $GENPOLY[$NROOTS] + $feedback);
            
					for($j=1;$j<$NROOTS;$j++) {
						$parity[$j] ^= $ALPHA_TO[$this->modnn($feedback + $GENPOLY[$NROOTS-$j])];
					}
				}
                
				// Shift 
				array_shift($parity);
				if($feedback != $A0) {
					array_push($parity, $ALPHA_TO[$this->modnn($feedback + $GENPOLY[0])]);
				} else {
					array_push($parity, 0);
				}
			}
		}
	}
    
	//##########################################################################
    
	class QRrs {
    
		public static $items = array();
        
		//----------------------------------------------------------------------
		public static function init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
		{
			foreach(self::$items as $rs) {
				if($rs->pad != $pad)       continue;
				if($rs->nroots != $nroots) continue;
				if($rs->mm != $symsize)    continue;
				if($rs->gfpoly != $gfpoly) continue;
				if($rs->fcr != $fcr)       continue;
				if($rs->prim != $prim)     continue;

				return $rs;
			}

			$rs = QRrsItem::init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad);
			array_unshift(self::$items, $rs);

			return $rs;
		}
	}



//---- qrmask.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Masking
 *
 * 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
 */
 
	define('N1', 3);
	define('N2', 3);
	define('N3', 40);
	define('N4', 10);

	class QRmask {
	
		public $runLength = array();
		
		//----------------------------------------------------------------------
		public function __construct() 
		{
			$this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
		}
        
		//----------------------------------------------------------------------
		public function writeFormatInformation($width, &$frame, $mask, $level)
		{
			$blacks = 0;
			$format =  QRspec::getFormatInfo($mask, $level);

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

This code seems to be duplicated across your project.

				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++) {

This code seems to be duplicated across your project.

				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;
		}
        
		//----------------------------------------------------------------------
		public function mask0($x, $y) { return ($x+$y)&1;                       }
		public function mask1($x, $y) { return ($y&1);                          }

The parameter $x is not used and could be removed.

		public function mask2($x, $y) { return ($x%3);                          }

The parameter $y is not used and could be removed.

		public function mask3($x, $y) { return ($x+$y)%3;                       }
		public function mask4($x, $y) { return (((int)($y/2))+((int)($x/3)))&1; }
		public function mask5($x, $y) { return (($x*$y)&1)+($x*$y)%3;           }
		public function mask6($x, $y) { return ((($x*$y)&1)+($x*$y)%3)&1;       }
		public function mask7($x, $y) { return ((($x*$y)%3)+(($x+$y)&1))&1;     }
        
		//----------------------------------------------------------------------
		private 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;
		}
        
		//----------------------------------------------------------------------
		public static function serial($bitFrame)
		{
			$codeArr = array();
            
			foreach ($bitFrame as $line)
				$codeArr[] = join('', $line);
                
			return gzcompress(join("\n", $codeArr), 9);
		}
        
		//----------------------------------------------------------------------
		public static function unserial($code)
		{
			$codeArr = array();
            
			$codeLines = explode("\n", gzuncompress($code));
			foreach ($codeLines as $line)
				$codeArr[] = str_split($line);
            
			return $codeArr;
		}
        
		//----------------------------------------------------------------------
		public function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly = false) 
		{
			$b = 0;
			$bitMask = array();

$bitMask is not used, you could remove the assignment.

            
			$fileName = QR_CACHE_DIR.'mask_'.$maskNo.DIRECTORY_SEPARATOR.'mask_'.$width.'_'.$maskNo.'.dat';

			if (QR_CACHEABLE) {
				if (file_exists($fileName)) {
					$bitMask = self::unserial(file_get_contents($fileName));
				} else {
					$bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);

The call to QRmask::generateMaskNo() has too many arguments starting with $d.

					if (!file_exists(QR_CACHE_DIR.'mask_'.$maskNo))
						mkdir(QR_CACHE_DIR.'mask_'.$maskNo);
					file_put_contents($fileName, self::serial($bitMask));
				}
			} else {
				$bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);

The call to QRmask::generateMaskNo() has too many arguments starting with $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;
		}
        
		//----------------------------------------------------------------------
		public 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;
		}
        
		//----------------------------------------------------------------------
		public 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(($i >= 3) && ($i < ($length-2)) && ($this->runLength[$i] % 3 == 0)) {
						$fact = (int)($this->runLength[$i] / 3);
						if(($this->runLength[$i-2] == $fact) &&
						   ($this->runLength[$i-1] == $fact) &&
						   ($this->runLength[$i+1] == $fact) &&
						   ($this->runLength[$i+2] == $fact)) {
							if(($this->runLength[$i-3] < 0) || ($this->runLength[$i-3] >= (4 * $fact))) {
								$demerit += N3;
							} else if((($i+3) >= $length) || ($this->runLength[$i+3] >= (4 * $fact))) {
								$demerit += N3;
							}
						}
					}
				}
			}
			return $demerit;
		}
        
		//----------------------------------------------------------------------
		public function evaluateSymbol($width, $frame)
		{
			$head = 0;

$head is not used, you could remove the assignment.

			$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) && ($y > 0)) {
						$b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);

The variable $frameYM does not seem to be defined for all execution paths leading up to this point.

						$w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);
                        
						if(($b22 | ($w22 ^ 1))&1) {                                                                     
							$demerit += N2;
						}
					}
					if(($x == 0) && (ord($frameY[$x]) & 1)) {
						$this->runLength[0] = -1;
						$head = 1;
						$this->runLength[$head] = 1;
					} else if($x > 0) {

This code seems to be duplicated across your project.

						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 && (ord($frame[$y][$x]) & 1)) {
						$this->runLength[0] = -1;
						$head = 1;
						$this->runLength[$head] = 1;
					} else if($y > 0) {

This code seems to be duplicated across your project.

						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;
		}
        
        
		//----------------------------------------------------------------------
		public function mask($width, $frame, $level)
		{
			$minDemerit = PHP_INT_MAX;
			$bestMaskNum = 0;

$bestMaskNum is not used, you could remove the assignment.

			$bestMask = array();

$bestMask is not used, you could remove the assignment.

            
			$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;

$demerit is not used, you could remove the assignment.

				$blacks = 0;

$blacks is not used, you could remove the assignment.

				$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;

$bestMaskNum is not used, you could remove the assignment.

				}
			}
            
			return $bestMask;
		}
        
		//----------------------------------------------------------------------
	}




//---- qrencode.php -----------------------------




/*
 * PHP QR Code encoder
 *
 * Main encoder classes.
 *
 * 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
 */
 
	class QRrsblock {
		public $dataLength;
		public $data = array();
		public $eccLength;
		public $ecc = array();
        
		public function __construct($dl, $data, $el, &$ecc, QRrsItem $rs)
		{
			$rs->encode_rs_char($data, $ecc);
        
			$this->dataLength = $dl;
			$this->data = $data;
			$this->eccLength = $el;
			$this->ecc = $ecc;
		}
	};
    
	//##########################################################################

	class QRrawcode {
		public $version;
		public $datacode = array();
		public $ecccode = array();
		public $blocks;
		public $rsblocks = array(); //of RSblock
		public $count;
		public $dataLength;
		public $eccLength;
		public $b1;
        
		//----------------------------------------------------------------------
		public function __construct(QRinput $input)
		{
			$spec = array(0,0,0,0,0);
            
			$this->datacode = $input->getByteStream();
			if(is_null($this->datacode)) {
				throw new Exception('null imput string');
			}

			QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);

			$this->version = $input->getVersion();
			$this->b1 = QRspec::rsBlockNum1($spec);
			$this->dataLength = QRspec::rsDataLength($spec);
			$this->eccLength = QRspec::rsEccLength($spec);
			$this->ecccode = array_fill(0, $this->eccLength, 0);
			$this->blocks = QRspec::rsBlockNum($spec);
            
			$ret = $this->init($spec);
			if($ret < 0) {
				throw new Exception('block alloc error');
				return null;

return null; does not seem to be reachable.

			}

			$this->count = 0;
		}
        
		//----------------------------------------------------------------------
		public function init(array $spec)
		{
			$dl = QRspec::rsDataCodes1($spec);
			$el = QRspec::rsEccCodes1($spec);
			$rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
            

			$blockNo = 0;
			$dataPos = 0;
			$eccPos = 0;
			for($i=0; $i<QRspec::rsBlockNum1($spec); $i++) {

This code seems to be duplicated across your project.

				$ecc = array_slice($this->ecccode,$eccPos);
				$this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el,  $ecc, $rs);
				$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
                
				$dataPos += $dl;
				$eccPos += $el;
				$blockNo++;
			}

			if(QRspec::rsBlockNum2($spec) == 0)
				return 0;

			$dl = QRspec::rsDataCodes2($spec);
			$el = QRspec::rsEccCodes2($spec);
			$rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
            
			if($rs == NULL) return -1;
            
			for($i=0; $i<QRspec::rsBlockNum2($spec); $i++) {

This code seems to be duplicated across your project.

				$ecc = array_slice($this->ecccode,$eccPos);
				$this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
				$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
                
				$dataPos += $dl;
				$eccPos += $el;
				$blockNo++;
			}

			return 0;
		}
        
		//----------------------------------------------------------------------
		public function getCode()
		{
			$ret;

The variable $ret seems only to be defined at a later point. Did you maybe move this code here without moving the variable definition?

			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[$col];
			} else if($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;
		}
	}

	//##########################################################################
    
	class QRcode {
    
		public $version;
		public $width;
		public $data; 
        
		//----------------------------------------------------------------------
		public function encodeMask(QRinput $input, $mask)
		{
			if($input->getVersion() < 0 || $input->getVersion() > QRSPEC_VERSION_MAX) {
				throw new Exception('wrong version');
			}
			if($input->getErrorCorrectionLevel() > QR_ECLEVEL_H) {
				throw new Exception('wrong level');
			}

			$raw = new QRrawcode($input);
            
			QRtools::markTime('after_raw');
            
			$version = $raw->version;
			$width = QRspec::getWidth($version);
			$frame = QRspec::newFrame($version);
            
			$filler = new FrameFiller($width, $frame);
			if(is_null($filler)) {
				return NULL;
			}

			// inteleaved data and ecc codes
			for($i=0; $i<$raw->dataLength + $raw->eccLength; $i++) {
				$code = $raw->getCode();
				$bit = 0x80;
				for($j=0; $j<8; $j++) {
					$addr = $filler->next();
					$filler->setFrameAt($addr, 0x02 | (($bit & $code) != 0));
					$bit = $bit >> 1;
				}
			}
            
			QRtools::markTime('after_filler');
            
			unset($raw);
            
			// remainder bits
			$j = QRspec::getRemainder($version);
			for($i=0; $i<$j; $i++) {
				$addr = $filler->next();
				$filler->setFrameAt($addr, 0x02);
			}
            
			$frame = $filler->frame;
			unset($filler);
            
            
			// masking
			$maskObj = new QRmask();
			if($mask < 0) {
            
				if (QR_FIND_BEST_MASK) {
					$masked = $maskObj->mask($width, $frame, $input->getErrorCorrectionLevel());
				} else {
					$masked = $maskObj->makeMask($width, $frame, (intval(QR_DEFAULT_MASK) % 8), $input->getErrorCorrectionLevel());
				}
			} else {
				$masked = $maskObj->makeMask($width, $frame, $mask, $input->getErrorCorrectionLevel());
			}
            
			if($masked == NULL) {
				return NULL;
			}
            
			QRtools::markTime('after_mask');
            
			$this->version = $version;
			$this->width = $width;
			$this->data = $masked;
            
			return $this;
		}
    
		//----------------------------------------------------------------------
		public function encodeInput(QRinput $input)
		{
			return $this->encodeMask($input, -1);
		}
        
		//----------------------------------------------------------------------
		public function encodeString8bit($string, $version, $level)
		{
			if(string == NULL) {
				throw new Exception('empty string!');
				return NULL;

return NULL; does not seem to be reachable.

			}

			$input = new QRinput($version, $level);
			if($input == NULL) return NULL;

			$ret = $input->append($input, QR_MODE_8, strlen($string), str_split($string));

The call to QRinput::append() has too many arguments starting with str_split($string).

			if($ret < 0) {
				unset($input);
				return NULL;
			}
			return $this->encodeInput($input);
		}

		//----------------------------------------------------------------------
		public function encodeString($string, $version, $level, $hint, $casesensitive)
		{

			if($hint != QR_MODE_8 && $hint != QR_MODE_KANJI) {
				throw new Exception('bad hint');
				return NULL;

return NULL; does not seem to be reachable.

			}

			$input = new QRinput($version, $level);
			if($input == NULL) return NULL;

			$ret = QRsplit::splitStringToQRinput($string, $input, $hint, $casesensitive);
			if($ret < 0) {
				return NULL;
			}

			return $this->encodeInput($input);
		}
        
		//----------------------------------------------------------------------
		public static function png($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false) 

The parameter $saveandprint is not used and could be removed.

		{
			$enc = QRencode::factory($level, $size, $margin);
			return $enc->encodePNG($text, $outfile, $saveandprint=false);
		}

		//----------------------------------------------------------------------
		public static function text($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4) 
		{
			$enc = QRencode::factory($level, $size, $margin);
			return $enc->encode($text, $outfile);
		}

		//----------------------------------------------------------------------
		public static function raw($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4) 
		{
			$enc = QRencode::factory($level, $size, $margin);
			return $enc->encodeRAW($text, $outfile);
		}
	}
    
	//##########################################################################
    
	class FrameFiller {
    
		public $width;
		public $frame;
		public $x;
		public $y;
		public $dir;
		public $bit;
        
		//----------------------------------------------------------------------
		public function __construct($width, &$frame)
		{
			$this->width = $width;
			$this->frame = $frame;
			$this->x = $width - 1;
			$this->y = $width - 1;
			$this->dir = -1;
			$this->bit = -1;
		}
        
		//----------------------------------------------------------------------
		public function setFrameAt($at, $val)
		{
			$this->frame[$at['y']][$at['x']] = chr($val);
		}
        
		//----------------------------------------------------------------------
		public function getFrameAt($at)
		{
			return ord($this->frame[$at['y']][$at['x']]);
		}
        
		//----------------------------------------------------------------------
		public function next()
		{
			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 || $y < 0) return null;

				$this->x = $x;
				$this->y = $y;

			} while(ord($this->frame[$y][$x]) & 0x80);
                        
			return array('x'=>$x, 'y'=>$y);
		}
        
	} ;
    
	//##########################################################################    
    
	class QRencode {
    
		public $casesensitive = true;
		public $eightbit = false;
        
		public $version = 0;
		public $size = 3;
		public $margin = 4;
        
		public $structured = 0; // not supported yet
        
		public $level = QR_ECLEVEL_L;
		public $hint = QR_MODE_8;
        
		//----------------------------------------------------------------------
		public static function factory($level = QR_ECLEVEL_L, $size = 3, $margin = 4)
		{
			$enc = new QRencode();
			$enc->size = $size;
			$enc->margin = $margin;
            
			switch ($level.'') {
				case '0':
				case '1':
				case '2':
				case '3':
						$enc->level = $level;
					break;
				case 'l':
				case 'L':
						$enc->level = QR_ECLEVEL_L;
					break;
				case 'm':
				case 'M':
						$enc->level = QR_ECLEVEL_M;
					break;
				case 'q':
				case 'Q':
						$enc->level = QR_ECLEVEL_Q;
					break;
				case 'h':
				case 'H':
						$enc->level = QR_ECLEVEL_H;
					break;
			}
            
			return $enc;
		}
        
		//----------------------------------------------------------------------
		public function encodeRAW($intext, $outfile = false) 

The parameter $outfile is not used and could be removed.

		{
			$code = new QRcode();

			if($this->eightbit) {

This code seems to be duplicated across your project.

				$code->encodeString8bit($intext, $this->version, $this->level);
			} else {
				$code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
			}
            
			return $code->data;
		}

		//----------------------------------------------------------------------
		public function encode($intext, $outfile = false) 
		{
			$code = new QRcode();

			if($this->eightbit) {

This code seems to be duplicated across your project.

				$code->encodeString8bit($intext, $this->version, $this->level);
			} else {
				$code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
			}
            
			QRtools::markTime('after_encode');
            
			if ($outfile!== false) {
				file_put_contents($outfile, join("\n", QRtools::binarize($code->data)));
			} else {
				return QRtools::binarize($code->data);
			}
		}
        
		//----------------------------------------------------------------------
		public function encodePNG($intext, $outfile = false,$saveandprint=false) 
		{
			try {
            
				ob_start();
				$tab = $this->encode($intext);
				$err = ob_get_contents();
				ob_end_clean();
                
				if ($err != '')
					QRtools::log($outfile, $err);
                
				$maxSize = (int)(QR_PNG_MAXIMUM_SIZE / (count($tab)+2*$this->margin));
                
				QRimage::png($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint);
            
			} catch (Exception $e) {
            
				QRtools::log($outfile, $e->getMessage());
            
			}
		}
	}