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DedeV6/src/include/qrcode/qrspec.php

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  1. <?php

  2. /*

  3.  * PHP QR Code encoder

  4.  *

  5.  * QR Code specifications

  6.  *

  7.  * Based on libqrencode C library distributed under LGPL 2.1

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

  9.  *

  10.  * PHP QR Code is distributed under LGPL 3

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

  12.  *

  13.  * The following data / specifications are taken from

  14.  * "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)

  15.  *  or

  16.  * "Automatic identification and data capture techniques -- 

  17.  *  QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)

  18.  *

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

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

  21.  * License as published by the Free Software Foundation; either

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

  23.  *

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

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

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

  27.  * Lesser General Public License for more details.

  28.  *

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

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

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

  32.  */

  33.  

  34.     define('QRSPEC_VERSION_MAX', 40);

  35.     define('QRSPEC_WIDTH_MAX',   177);

  36. 

  37.     define('QRCAP_WIDTH',        0);

  38.     define('QRCAP_WORDS',        1);

  39.     define('QRCAP_REMINDER',     2);

  40.     define('QRCAP_EC',           3);

  41. 

  42.     class QRspec {

  43.     

  44.         public static $capacity = array(

  45.             array(  0,    0, 0, array(   0,    0,    0,    0)),

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

  47.             array( 25,   44, 7, array(  10,   16,   22,   28)),

  48.             array( 29,   70, 7, array(  15,   26,   36,   44)),

  49.             array( 33,  100, 7, array(  20,   36,   52,   64)),

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

  51.             array( 41,  172, 7, array(  36,   64,   96,  112)),

  52.             array( 45,  196, 0, array(  40,   72,  108,  130)),

  53.             array( 49,  242, 0, array(  48,   88,  132,  156)),

  54.             array( 53,  292, 0, array(  60,  110,  160,  192)),

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

  56.             array( 61,  404, 0, array(  80,  150,  224,  264)),

  57.             array( 65,  466, 0, array(  96,  176,  260,  308)),

  58.             array( 69,  532, 0, array( 104,  198,  288,  352)),

  59.             array( 73,  581, 3, array( 120,  216,  320,  384)),

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

  61.             array( 81,  733, 3, array( 144,  280,  408,  480)),

  62.             array( 85,  815, 3, array( 168,  308,  448,  532)),

  63.             array( 89,  901, 3, array( 180,  338,  504,  588)),

  64.             array( 93,  991, 3, array( 196,  364,  546,  650)),

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

  66.             array(101, 1156, 4, array( 224,  442,  644,  750)),

  67.             array(105, 1258, 4, array( 252,  476,  690,  816)),

  68.             array(109, 1364, 4, array( 270,  504,  750,  900)),

  69.             array(113, 1474, 4, array( 300,  560,  810,  960)),

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

  71.             array(121, 1706, 4, array( 336,  644,  952, 1110)),

  72.             array(125, 1828, 4, array( 360,  700, 1020, 1200)),

  73.             array(129, 1921, 3, array( 390,  728, 1050, 1260)),

  74.             array(133, 2051, 3, array( 420,  784, 1140, 1350)),

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

  76.             array(141, 2323, 3, array( 480,  868, 1290, 1530)),

  77.             array(145, 2465, 3, array( 510,  924, 1350, 1620)),

  78.             array(149, 2611, 3, array( 540,  980, 1440, 1710)),

  79.             array(153, 2761, 3, array( 570, 1036, 1530, 1800)),

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

  81.             array(161, 3034, 0, array( 600, 1120, 1680, 1980)),

  82.             array(165, 3196, 0, array( 630, 1204, 1770, 2100)),

  83.             array(169, 3362, 0, array( 660, 1260, 1860, 2220)),

  84.             array(173, 3532, 0, array( 720, 1316, 1950, 2310)),

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

  86.         );

  87.         

  88.         //----------------------------------------------------------------------

  89.         public static function getDataLength($version, $level)

  90.         {

  91.             return self::$capacity[$version][QRCAP_WORDS] - self::$capacity[$version][QRCAP_EC][$level];

  92.         }

  93.         

  94.         //----------------------------------------------------------------------

  95.         public static function getECCLength($version, $level)

  96.         {

  97.             return self::$capacity[$version][QRCAP_EC][$level];

  98.         }

  99.         

  100.         //----------------------------------------------------------------------

  101.         public static function getWidth($version)

  102.         {

  103.             return self::$capacity[$version][QRCAP_WIDTH];

  104.         }

  105.         

  106.         //----------------------------------------------------------------------

  107.         public static function getRemainder($version)

  108.         {

  109.             return self::$capacity[$version][QRCAP_REMINDER];

  110.         }

  111.         

  112.         //----------------------------------------------------------------------

  113.         public static function getMinimumVersion($size, $level)

  114.         {

  115. 

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

  117.                 $words  = self::$capacity[$i][QRCAP_WORDS] - self::$capacity[$i][QRCAP_EC][$level];

  118.                 if($words >= $size) 

  119.                     return $i;

  120.             }

  121. 

  122.             return -1;

  123.         }

  124.     

  125.         //######################################################################

  126.         

  127.         public static $lengthTableBits = array(

  128.             array(10, 12, 14),

  129.             array( 9, 11, 13),

  130.             array( 8, 16, 16),

  131.             array( 8, 10, 12)

  132.         );

  133.         

  134.         //----------------------------------------------------------------------

  135.         public static function lengthIndicator($mode, $version)

  136.         {

  137.             if ($mode == QR_MODE_STRUCTURE)

  138.                 return 0;

  139.                 

  140.             if ($version <= 9) {

  141.                 $l = 0;

  142.             } else if ($version <= 26) {

  143.                 $l = 1;

  144.             } else {

  145.                 $l = 2;

  146.             }

  147. 

  148.             return self::$lengthTableBits[$mode][$l];

  149.         }

  150.         

  151.         //----------------------------------------------------------------------

  152.         public static function maximumWords($mode, $version)

  153.         {

  154.             if($mode == QR_MODE_STRUCTURE) 

  155.                 return 3;

  156.                 

  157.             if($version <= 9) {

  158.                 $l = 0;

  159.             } else if($version <= 26) {

  160.                 $l = 1;

  161.             } else {

  162.                 $l = 2;

  163.             }

  164. 

  165.             $bits = self::$lengthTableBits[$mode][$l];

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

  167.             

  168.             if($mode == QR_MODE_KANJI) {

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

  170.             }

  171. 

  172.             return $words;

  173.         }

  174. 

  175.         // Error correction code -----------------------------------------------

  176.         // Table of the error correction code (Reed-Solomon block)

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

  178. 

  179.         public static $eccTable = array(

  180.             array(array( 0,  0), array( 0,  0), array( 0,  0), array( 0,  0)),

  181.             array(array( 1,  0), array( 1,  0), array( 1,  0), array( 1,  0)), // 1

  182.             array(array( 1,  0), array( 1,  0), array( 1,  0), array( 1,  0)),

  183.             array(array( 1,  0), array( 1,  0), array( 2,  0), array( 2,  0)),

  184.             array(array( 1,  0), array( 2,  0), array( 2,  0), array( 4,  0)),

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

  186.             array(array( 2,  0), array( 4,  0), array( 4,  0), array( 4,  0)),

  187.             array(array( 2,  0), array( 4,  0), array( 2,  4), array( 4,  1)),

  188.             array(array( 2,  0), array( 2,  2), array( 4,  2), array( 4,  2)),

  189.             array(array( 2,  0), array( 3,  2), array( 4,  4), array( 4,  4)),

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

  191.             array(array( 4,  0), array( 1,  4), array( 4,  4), array( 3,  8)),

  192.             array(array( 2,  2), array( 6,  2), array( 4,  6), array( 7,  4)),

  193.             array(array( 4,  0), array( 8,  1), array( 8,  4), array(12,  4)),

  194.             array(array( 3,  1), array( 4,  5), array(11,  5), array(11,  5)),

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

  196.             array(array( 5,  1), array( 7,  3), array(15,  2), array( 3, 13)),

  197.             array(array( 1,  5), array(10,  1), array( 1, 15), array( 2, 17)),

  198.             array(array( 5,  1), array( 9,  4), array(17,  1), array( 2, 19)),

  199.             array(array( 3,  4), array( 3, 11), array(17,  4), array( 9, 16)),

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

  201.             array(array( 4,  4), array(17,  0), array(17,  6), array(19,  6)),

  202.             array(array( 2,  7), array(17,  0), array( 7, 16), array(34,  0)),

  203.             array(array( 4,  5), array( 4, 14), array(11, 14), array(16, 14)),

  204.             array(array( 6,  4), array( 6, 14), array(11, 16), array(30,  2)),

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

  206.             array(array(10,  2), array(19,  4), array(28,  6), array(33,  4)),

  207.             array(array( 8,  4), array(22,  3), array( 8, 26), array(12, 28)),

  208.             array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)),

  209.             array(array( 7,  7), array(21,  7), array( 1, 37), array(19, 26)),

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

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

  212.             array(array(17,  0), array(10, 23), array(10, 35), array(19, 35)),

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

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

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

  216.             array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)),

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

  218.             array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)),

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

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

  221.         );                                                                       

  222. 

  223.         //----------------------------------------------------------------------

  224.         // CACHEABLE!!!

  225.         

  226.         public static function getEccSpec($version, $level, array &$spec)

  227.         {

  228.             if (count($spec) < 5) {

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

  230.             }

  231. 

  232.             $b1   = self::$eccTable[$version][$level][0];

  233.             $b2   = self::$eccTable[$version][$level][1];

  234.             $data = self::getDataLength($version, $level);

  235.             $ecc  = self::getECCLength($version, $level);

  236. 

  237.             if($b2 == 0) {

  238.                 $spec[0] = $b1;

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

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

  241.                 $spec[3] = 0; 

  242.                 $spec[4] = 0;

  243.             } else {

  244.                 $spec[0] = $b1;

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

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

  247.                 $spec[3] = $b2;

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

  249.             }

  250.         }

  251. 

  252.         // Alignment pattern ---------------------------------------------------

  253. 

  254.         // Positions of alignment patterns.

  255.         // This array includes only the second and the third position of the 

  256.         // alignment patterns. Rest of them can be calculated from the distance 

  257.         // between them.

  258.          

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

  260.          

  261.         public static $alignmentPattern = array(      

  262.             array( 0,  0),

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

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

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

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

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

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

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

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

  271.         );                                                                                  

  272. 

  273.         

  274.         /** --------------------------------------------------------------------

  275.          * Put an alignment marker.

  276.          * @param frame

  277.          * @param width

  278.          * @param ox,oy center coordinate of the pattern

  279.          */

  280.         public static function putAlignmentMarker(array &$frame, $ox, $oy)

  281.         {

  282.             $finder = array(

  283.                 "\xa1\xa1\xa1\xa1\xa1",

  284.                 "\xa1\xa0\xa0\xa0\xa1",

  285.                 "\xa1\xa0\xa1\xa0\xa1",

  286.                 "\xa1\xa0\xa0\xa0\xa1",

  287.                 "\xa1\xa1\xa1\xa1\xa1"

  288.             );                        

  289.             

  290.             $yStart = $oy-2;         

  291.             $xStart = $ox-2;

  292.             

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

  294.                 QRstr::set($frame, $xStart, $yStart+$y, $finder[$y]);

  295.             }

  296.         }

  297. 

  298.         //----------------------------------------------------------------------

  299.         public static function putAlignmentPattern($version, &$frame, $width)

  300.         {

  301.             if($version < 2)

  302.                 return;

  303. 

  304.             $d = self::$alignmentPattern[$version][1] - self::$alignmentPattern[$version][0];

  305.             if($d < 0) {

  306.                 $w = 2;

  307.             } else {

  308.                 $w = (int)(($width - self::$alignmentPattern[$version][0]) / $d + 2);

  309.             }

  310. 

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

  312.                 $x = self::$alignmentPattern[$version][0];

  313.                 $y = self::$alignmentPattern[$version][0];

  314.                 self::putAlignmentMarker($frame, $x, $y);

  315.                 return;

  316.             }

  317. 

  318.             $cx = self::$alignmentPattern[$version][0];

  319.             for($x=1; $x<$w - 1; $x++) {

  320.                 self::putAlignmentMarker($frame, 6, $cx);

  321.                 self::putAlignmentMarker($frame, $cx,  6);

  322.                 $cx += $d;

  323.             }

  324. 

  325.             $cy = self::$alignmentPattern[$version][0];

  326.             for($y=0; $y<$w-1; $y++) {

  327.                 $cx = self::$alignmentPattern[$version][0];

  328.                 for($x=0; $x<$w-1; $x++) {

  329.                     self::putAlignmentMarker($frame, $cx, $cy);

  330.                     $cx += $d;

  331.                 }

  332.                 $cy += $d;

  333.             }

  334.         }

  335. 

  336.         // Version information pattern -----------------------------------------

  337. 

  338. 		// Version information pattern (BCH coded).

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

  340.         

  341. 		// size: [QRSPEC_VERSION_MAX - 6]

  342. 		

  343.         public static $versionPattern = array(

  344.             0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d,

  345.             0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9,

  346.             0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75,

  347.             0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64,

  348.             0x27541, 0x28c69

  349.         );

  350. 

  351.         //----------------------------------------------------------------------

  352.         public static function getVersionPattern($version)

  353.         {

  354.             if($version < 7 || $version > QRSPEC_VERSION_MAX)

  355.                 return 0;

  356. 

  357.             return self::$versionPattern[$version -7];

  358.         }

  359. 

  360.         // Format information --------------------------------------------------

  361.         // See calcFormatInfo in tests/test_qrspec.c (orginal qrencode c lib)

  362.         

  363.         public static $formatInfo = array(

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

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

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

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

  368.         );

  369. 

  370.         public static function getFormatInfo($mask, $level)

  371.         {

  372.             if($mask < 0 || $mask > 7)

  373.                 return 0;

  374.                 

  375.             if($level < 0 || $level > 3)

  376.                 return 0;                

  377. 

  378.             return self::$formatInfo[$level][$mask];

  379.         }

  380. 

  381.         // Frame ---------------------------------------------------------------

  382.         // Cache of initial frames.

  383.          

  384.         public static $frames = array();

  385. 

  386.         /** --------------------------------------------------------------------

  387.          * Put a finder pattern.

  388.          * @param frame

  389.          * @param width

  390.          * @param ox,oy upper-left coordinate of the pattern

  391.          */

  392.         public static function putFinderPattern(&$frame, $ox, $oy)

  393.         {

  394.             $finder = array(

  395.                 "\xc1\xc1\xc1\xc1\xc1\xc1\xc1",

  396.                 "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",

  397.                 "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

  398.                 "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

  399.                 "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

  400.                 "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",

  401.                 "\xc1\xc1\xc1\xc1\xc1\xc1\xc1"

  402.             );                            

  403.             

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

  405.                 QRstr::set($frame, $ox, $oy+$y, $finder[$y]);

  406.             }

  407.         }

  408. 

  409.         //----------------------------------------------------------------------

  410.         public static function createFrame($version)

  411.         {

  412.             $width = self::$capacity[$version][QRCAP_WIDTH];

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

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

  415. 

  416.             // Finder pattern

  417.             self::putFinderPattern($frame, 0, 0);

  418.             self::putFinderPattern($frame, $width - 7, 0);

  419.             self::putFinderPattern($frame, 0, $width - 7);

  420.             

  421.             // Separator

  422.             $yOffset = $width - 7;

  423.             

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

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

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

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

  428.                 $yOffset++;

  429.             }

  430.             

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

  432.             

  433.             QRstr::set($frame, 0, 7, $setPattern);

  434.             QRstr::set($frame, $width-8, 7, $setPattern);

  435.             QRstr::set($frame, 0, $width - 8, $setPattern);

  436.         

  437.             // Format info

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

  439.             QRstr::set($frame, 0, 8, $setPattern);

  440.             QRstr::set($frame, $width - 8, 8, $setPattern, 8);

  441.             

  442.             $yOffset = $width - 8;

  443. 

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

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

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

  447.             }

  448. 

  449.             // Timing pattern  

  450.             

  451.             for($i=1; $i<$width-15; $i++) {

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

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

  454.             }

  455.             

  456.             // Alignment pattern  

  457.             self::putAlignmentPattern($version, $frame, $width);

  458.             

  459.             // Version information 

  460.             if($version >= 7) {

  461.                 $vinf = self::getVersionPattern($version);

  462. 

  463.                 $v = $vinf;

  464.                 

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

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

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

  468.                         $v = $v >> 1;

  469.                     }

  470.                 }

  471. 

  472.                 $v = $vinf;

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

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

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

  476.                         $v = $v >> 1;

  477.                     }

  478.                 }

  479.             }

  480.     

  481.             // and a little bit...  

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

  483.             

  484.             return $frame;

  485.         }

  486. 

  487.         //----------------------------------------------------------------------

  488.         public static function debug($frame, $binary_mode = false)

  489.         {

  490.             if ($binary_mode) {

  491.             

  492.                     foreach ($frame as &$frameLine) {

  493.                         $frameLine = join('<span class="m">&nbsp;&nbsp;</span>', explode('0', $frameLine));

  494.                         $frameLine = join('&#9608;&#9608;', explode('1', $frameLine));

  495.                     }

  496.                     

  497.                     ?>

  498.                 <style>

  499.                     .m { background-color: white; }

  500.                 </style>

  501.                 <?php

  502.                     echo '<pre><tt><br/ ><br/ ><br/ >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';

  503.                     echo join("<br/ >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;", $frame);

  504.                     echo '</tt></pre><br/ ><br/ ><br/ ><br/ ><br/ ><br/ >';

  505.             

  506.             } else {

  507.             

  508.                 foreach ($frame as &$frameLine) {

  509.                     $frameLine = join('<span class="m">&nbsp;</span>',  explode("\xc0", $frameLine));

  510.                     $frameLine = join('<span class="m">&#9618;</span>', explode("\xc1", $frameLine));

  511.                     $frameLine = join('<span class="p">&nbsp;</span>',  explode("\xa0", $frameLine));

  512.                     $frameLine = join('<span class="p">&#9618;</span>', explode("\xa1", $frameLine));

  513.                     $frameLine = join('<span class="s">&#9671;</span>', explode("\x84", $frameLine)); //format 0

  514.                     $frameLine = join('<span class="s">&#9670;</span>', explode("\x85", $frameLine)); //format 1

  515.                     $frameLine = join('<span class="x">&#9762;</span>', explode("\x81", $frameLine)); //special bit

  516.                     $frameLine = join('<span class="c">&nbsp;</span>',  explode("\x90", $frameLine)); //clock 0

  517.                     $frameLine = join('<span class="c">&#9719;</span>', explode("\x91", $frameLine)); //clock 1

  518.                     $frameLine = join('<span class="f">&nbsp;</span>',  explode("\x88", $frameLine)); //version

  519.                     $frameLine = join('<span class="f">&#9618;</span>', explode("\x89", $frameLine)); //version

  520.                     $frameLine = join('&#9830;', explode("\x01", $frameLine));

  521.                     $frameLine = join('&#8901;', explode("\0", $frameLine));

  522.                 }

  523.                 

  524.                 ?>

  525.                 <style>

  526.                     .p { background-color: yellow; }

  527.                     .m { background-color: #00FF00; }

  528.                     .s { background-color: #FF0000; }

  529.                     .c { background-color: aqua; }

  530.                     .x { background-color: pink; }

  531.                     .f { background-color: gold; }

  532.                 </style>

  533.                 <?php

  534.                 echo "<pre><tt>";

  535.                 echo join("<br/ >", $frame);

  536.                 echo "</tt></pre>";

  537.             

  538.             }

  539.         }

  540. 

  541.         //----------------------------------------------------------------------

  542.         public static function serial($frame)

  543.         {

  544.             return gzcompress(join("\n", $frame), 9);

  545.         }

  546.         

  547.         //----------------------------------------------------------------------

  548.         public static function unserial($code)

  549.         {

  550.             return explode("\n", gzuncompress($code));

  551.         }

  552.         

  553.         //----------------------------------------------------------------------

  554.         public static function newFrame($version)

  555.         {

  556.             if($version < 1 || $version > QRSPEC_VERSION_MAX) 

  557.                 return null;

  558. 

  559.             if(!isset(self::$frames[$version])) {

  560.                 

  561.                 $fileName = QR_CACHE_DIR.'frame_'.$version.'.dat';

  562.                 

  563.                 if (QR_CACHEABLE) {

  564.                     if (file_exists($fileName)) {

  565.                         self::$frames[$version] = self::unserial(file_get_contents($fileName));

  566.                     } else {

  567.                         self::$frames[$version] = self::createFrame($version);

  568.                         file_put_contents($fileName, self::serial(self::$frames[$version]));

  569.                     }

  570.                 } else {

  571.                     self::$frames[$version] = self::createFrame($version);

  572.                 }

  573.             }

  574.             

  575.             if(is_null(self::$frames[$version]))

  576.                 return null;

  577. 

  578.             return self::$frames[$version];

  579.         }

  580. 

  581.         //----------------------------------------------------------------------

  582.         public static function rsBlockNum($spec)     { return $spec[0] + $spec[3]; }

  583.         public static function rsBlockNum1($spec)    { return $spec[0]; }

  584.         public static function rsDataCodes1($spec)   { return $spec[1]; }

  585.         public static function rsEccCodes1($spec)    { return $spec[2]; }

  586.         public static function rsBlockNum2($spec)    { return $spec[3]; }

  587.         public static function rsDataCodes2($spec)   { return $spec[4]; }

  588.         public static function rsEccCodes2($spec)    { return $spec[2]; }

  589.         public static function rsDataLength($spec)   { return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);    }

  590.         public static function rsEccLength($spec)    { return ($spec[0] + $spec[3]) * $spec[2]; }

  591.         

  592.     }