<?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')
    {
        $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);
            }

            $width = count($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) {
            $l = 0;
        } else if ($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) {
            $l = 0;
        } else if ($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; $x++) {
            self::putAlignmentMarker($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; $x++) {
                self::putAlignmentMarker($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);

        $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; $x++) {
                for ($y = 0; $y < 3; $y++) {
                    $frame[($width - 11) + $y][$x] = chr(0x88 | ($v & 1));
                    $v = $v >> 1;
                }
            }

            $v = $vinf;
            for ($y = 0; $y < 6; $y++) {
                for ($x = 0; $x < 3; $x++) {
                    $frame[$y][$x + ($width - 11)] = chr(0x88 | ($v & 1));
                    $v = $v >> 1;
                }
            }
        }

        // and a little bit...  
        $frame[$width - 8][8] = "\x81";

        return $frame;
    }

    //----------------------------------------------------------------------
    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);
        $col[1] = ImageColorAllocate($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;
        }

        $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;

        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;
        }

        $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;
        }

        $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;
        }

        $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);

        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, $data);
                break;
            case QR_MODE_AN:
                return self::checkModeAn($size, $data);
                break;
            case QR_MODE_KANJI:
                return self::checkModeKanji($size, $data);
                break;
            case QR_MODE_8:
                return true;
                break;
            case QR_MODE_STRUCTURE:
                return true;
                break;

            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;
        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;
            } 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; $i++) {
            if ($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; $j++) {
                if ($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, $num)
    {
        if ($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, $data)
    {
        if ($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++) {
                $v = $v << 1;
                $v |= $this->data[$p];
                $p++;
            }
            $data[$i] = $v;
        }

        if ($size & 7) {
            $v = 0;
            for ($j = 0; $j < ($size & 7); $j++) {
                $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) {
            $dif = QRinput::estimateBitsModeNum($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) {
            $dif = QRinput::estimateBitsModeNum($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)) {
                $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)) {
            $dif = QRinput::estimateBitsModeAn($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;
    }

    //----------------------------------------------------------------------
    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) {
                $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)
                        $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), $this->modeHint);
            if ($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; $i++) {
            if ($format & 1) {
                $blacks += 2;
                $v = 0x85;
            } else {
                $v = 0x84;
            }

            $frame[8][$width - 1 - $i] = chr($v);
            if ($i < 6) {
                $frame[$i][8] = chr($v);
            } else {
                $frame[$i + 1][8] = chr($v);
            }
            $format = $format >> 1;
        }

        for ($i = 0; $i < 7; $i++) {
            if ($format & 1) {
                $blacks += 2;
                $v = 0x85;
            } else {
                $v = 0x84;
            }

            $frame[$width - 7 + $i][8] = chr($v);
            if ($i == 0) {
                $frame[8][7] = chr($v);
            } else {
                $frame[8][6 - $i] = chr($v);
            }

            $format = $format >> 1;
        }

        return $blacks;
    }

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

    public function mask1($x, $y)
    {
        return ($y & 1);
    }

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

    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();

        $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);
                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);
        }

        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;
        $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]);
                    $w22 = ord($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 ($x > 0) {
                    if ((ord($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 ($y > 0) {
                    if ((ord($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;
        $bestMask = array();

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

        if (QR_FIND_FROM_RANDOM !== false) {

            $howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);
            for ($i = 0; $i < $howManuOut; $i++) {
                $remPos = rand(0, count($checked_masks) - 1);
                unset($checked_masks[$remPos]);
                $checked_masks = array_values($checked_masks);
            }

        }

        $bestMask = $frame;

        foreach ($checked_masks as $i) {
            $mask = array_fill(0, $width, str_repeat("\0", $width));

            $demerit = 0;
            $blacks = 0;
            $blacks = $this->makeMaskNo($i, $width, $frame, $mask);
            $blacks += $this->writeFormatInformation($width, $mask, $i, $level);
            $blacks = (int)(100 * $blacks / ($width * $width));
            $demerit = (int)((int)(abs($blacks - 50) / 5) * N4);
            $demerit += $this->evaluateSymbol($width, $mask);

            if ($demerit < $minDemerit) {
                $minDemerit = $demerit;
                $bestMask = $mask;
                $bestMaskNum = $i;
            }
        }

        return $bestMask;
    }

    //----------------------------------------------------------------------
}


//---- 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;
        }

        $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++) {
            $ecc = array_slice($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++) {
            $ecc = array_slice($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;

        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;
        }

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

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

        $input = new QRinput($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)
    {
        $enc = QRencode::factory($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)
    {
        $code = new QRcode();

        if ($this->eightbit) {
            $code->encodeString8bit($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) {
            $code->encodeString8bit($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());

        }
    }
}


