com-tecnick-tcpdf
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Class: QRcode

Source Location: /qrcode.php

Class Overview


Class to create QR-code arrays for TCPDF class.


Author(s):

  • Nicola Asuni

Version:

  • 1.0.006

Copyright:

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

Variables

Methods



Class Details

[line 300]
Class to create QR-code arrays for TCPDF class.

QR Code symbol is a 2D barcode that can be scanned by handy terminals such as a mobile phone with CCD. The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness. This class supports QR Code model 2, described in JIS (Japanese Industrial Standards) X0510:2004 or ISO/IEC 18004. Currently the following features are not supported: ECI and FNC1 mode, Micro QR Code, QR Code model 1, Structured mode.

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




Tags:

author:  Nicola Asuni
version:  1.0.006
copyright:  2010-2010 Nicola Asuni - Tecnick.com S.r.l (www.tecnick.com) Via Della Pace, 11 - 09044 - Quartucciu (CA) - ITALY - www.tecnick.com - info@tecnick.com
link:  http://www.tcpdf.org
abstract:  Class for generating QR-code array for TCPDF.
name:  QRcode
license:  LGPL


[ Top ]


Class Variables

$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
)

[line 598]



Tags:

var:  Positions of alignment patterns. This array includes only the second and the third position of the alignment patterns. Rest of them can be calculated from the distance between them. See Table 1 in Appendix E (pp.71) of JIS X0510:2004.
access:  protected

Type:   array


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$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  //
         )

[line 472]



Tags:

var:  convesion table
access:  protected

Type:   alphabet-numeric


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$b1 =

[line 430]



Tags:

access:  protected

Type:   b1


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$barcode_array = array()

[line 306]



Tags:

var:  array to be returned which is readable by TCPDF
access:  protected

Type:   barcode


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$bit =

[line 380]



Tags:

var:  bit
access:  protected

Type:   single


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$blocks =

[line 400]



Tags:

access:  protected

Type:   blocks


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$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
)

[line 488]



Tags:

var:  Table of the capacity of symbols See Table 1 (pp.13) and Table 12-16 (pp.30-36), JIS X0510:2004.
access:  protected

Type:   array


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$casesensitive =  true

[line 330]



Tags:

var:  true the input string will be converted to uppercase
access:  protected

Type:   if


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$count =

[line 412]



Tags:

access:  protected

Type:   counter


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$data =

[line 342]



Tags:

var:  data
access:  protected

Type:   mask


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$datacode = array()

[line 388]



Tags:

var:  code
access:  protected

Type:   data


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$dataLength =

[line 418]



Tags:

var:  length
access:  protected

Type:   data


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$dataStr =  ''

[line 446]



Tags:

var:  data string
access:  protected

Type:   input


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$dir =

[line 374]



Tags:

access:  protected

Type:   direction


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$ecccode = array()

[line 394]



Tags:

var:  correction code
access:  protected

Type:   error


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$eccLength =

[line 424]



Tags:

var:  correction length
access:  protected

Type:   error


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$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
)

[line 548]



Tags:

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

Type:   array


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$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)//
)

[line 628]



Tags:

var:  Format information
access:  protected

Type:   array


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$frame =

[line 356]



Tags:

access:  protected

Type:   frame


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$frames = array()

[line 466]



Tags:

var:  of frames
access:  protected

Type:   array


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$hint =  QR_MODE_8B

[line 324]



Tags:

var:  mode
access:  protected

Type:   Encoding


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$items =

[line 452]



Tags:

var:  items
access:  protected

Type:   input


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$lengthTableBits = array(
         array(10, 12, 14),array(9,11,13),array(8,16,16),array(8,10,12))

[line 536]



Tags:

var:  Length indicator
access:  protected

Type:   array


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$level =  QR_ECLEVEL_L

[line 318]



Tags:

var:  of error correction. See definitions for possible values.
access:  protected

Type:   Levels


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$rsblocks = array()

[line 406]



Tags:

var:  blocks
access:  protected

Type:   Reed-Solomon


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$rsitems = array()

[line 460]



Tags:

var:  items
access:  protected

Type:   Reed-Solomon


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$runLength = array()

[line 438]



Tags:

var:  length
access:  protected

Type:   run


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$structured =  0

[line 336]



Tags:

var:  QR code (not supported yet)
access:  protected

Type:   structured


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$version =  0

[line 312]



Tags:

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

Type:   QR


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$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
      )

[line 616]



Tags:

var:  Version information pattern (BCH coded). See Table 1 in Appendix D (pp.68) of JIS X0510:2004. size: [QRSPEC_VERSION_MAX - 6]
access:  protected

Type:   array


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$width =

[line 350]



Tags:

access:  protected

Type:   width


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$x =

[line 362]



Tags:

var:  position of bit
access:  protected

Type:   X


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$y =

[line 368]



Tags:

var:  position of bit
access:  protected

Type:   Y


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Class Methods


constructor QRcode [line 648]

QRcode QRcode( string $code, [string $eclevel = 'L'])

This is the class constructor.

Creates a QRcode object




Tags:

since:  1.0.000
access:  public


Parameters:

string   $code   code to represent using QRcode
string   $eclevel   error level:
  • L : About 7% or less errors can be corrected.
  • M : About 15% or less errors can be corrected.
  • Q : About 25% or less errors can be corrected.
  • H : About 30% or less errors can be corrected.

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method allocate [line 2138]

array allocate( int $setLength)

Return an array with zeros



Parameters:

int   $setLength   array size

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method appendBitstream [line 2192]

array appendBitstream( array $bitstream, array $append)

Append one bitstream to another



Tags:

return:  bitstream


Parameters:

array   $bitstream   original bitstream
array   $append   bitstream to append

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method appendBytes [line 2224]

array appendBytes( array $bitstream, int $size, array $data)

Append one bitstream created from bytes to another



Tags:

return:  bitstream


Parameters:

array   $bitstream   original bitstream
int   $size   size
array   $data   bytes

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method appendNewInputItem [line 1705]

items appendNewInputItem( array $items, int $mode, int $size, array $data)

Append data to an input object.

The data is copied and appended to the input object.




Parameters:

int   $mode   encoding mode.
int   $size   size of data (byte).
array   $data   array of input data.
array   $items   items input items

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method appendNum [line 2209]

array appendNum( array $bitstream, int $bits, int $num)

Append one bitstream created from number to another



Tags:

return:  bitstream


Parameters:

array   $bitstream   original bitstream
int   $bits   number of bits
int   $num   number

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method appendPaddingBit [line 2064]

array appendPaddingBit( array $bstream)

Append Padding Bit to bitstream



Tags:

return:  bitstream


Parameters:

array   $bstream  

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method binarize [line 698]

array binarize( array $frame)

Convert the frame in binary form



Tags:

return:  frame in binary form


Parameters:

array   $frame   array to binarize

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method bitstreamToByte [line 2237]

array bitstreamToByte( $bstream, array $bitstream)

Convert bitstream to bytes



Tags:

return:  of bytes


Parameters:

array   $bitstream   original bitstream
   $bstream  

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method calcN1N3 [line 1135]

int calcN1N3( int $length)

calcN1N3



Tags:

return:  demerit


Parameters:

int   $length  

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method calcParity [line 1739]

int calcParity( array $items)

calcParity



Tags:

return:  parity


Parameters:

array   $items  

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method check [line 1868]

boolean check( int $mode, int $size, array $data)

Validate the input data.



Tags:

return:  true in case of valid data, false otherwise


Parameters:

int   $mode   encoding mode.
int   $size   size of data (byte).
array   $data   data data to validate

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method checkModeAn [line 1781]

boolean checkModeAn( int $size, array $data)

checkModeAn



Tags:

return:  true or false


Parameters:

int   $size  
array   $data  

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method checkModeKanji [line 1848]

boolean checkModeKanji( int $size, array $data)

checkModeKanji



Tags:

return:  true or false


Parameters:

int   $size  
array   $data  

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method checkModeNum [line 1757]

boolean checkModeNum( int $size, array $data)

checkModeNum



Tags:

return:  true or false


Parameters:

int   $size  
array   $data  

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method convertData [line 2035]

array convertData( array $items)

convertData



Tags:

return:  items


Parameters:

array   $items  

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method createBitStream [line 2020]

array createBitStream( array $items)

createBitStream



Tags:

return:  of items and total bits


Parameters:

array   $items  

[ Top ]

method createFrame [line 2540]

Array createFrame( int $version)

Return a copy of initialized frame.



Tags:

return:  of unsigned char.


Parameters:

int   $version   version

[ Top ]

method eat8 [line 1404]

int eat8( )

eat8



Tags:

return:  run


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method eatAn [line 1352]

int eatAn( )

eatAn



Tags:

return:  run


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method eatKanji [line 1391]

int eatKanji( )

eatKanji



Tags:

return:  run


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method eatNum [line 1320]

int eatNum( )

eatNum



Tags:

return:  run


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method encodeBitStream [line 1650]

array encodeBitStream( array $inputitem, int $version)

encodeBitStream



Tags:

return:  input item


Parameters:

array   $inputitem  
int   $version  

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method encodeMask [line 729]

void encodeMask( int $mask)

Encode mask



Parameters:

int   $mask   masking mode

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method encodeMode8 [line 1596]

array encodeMode8( array $inputitem, int $version)

encodeMode8



Tags:

return:  input item


Parameters:

array   $inputitem  
int   $version  

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method encodeModeAn [line 1573]

array encodeModeAn( array $inputitem, int $version)

encodeModeAn



Tags:

return:  input item


Parameters:

array   $inputitem  
int   $version  

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method encodeModeKanji [line 1612]

array encodeModeKanji( array $inputitem, int $version)

encodeModeKanji



Tags:

return:  input item


Parameters:

array   $inputitem  
int   $version  

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method encodeModeNum [line 1544]

array encodeModeNum( array $inputitem, int $version)

encodeModeNum



Tags:

return:  input item


Parameters:

array   $inputitem  
int   $version  

[ Top ]

method encodeModeStructure [line 1635]

array encodeModeStructure( array $inputitem)

encodeModeStructure



Tags:

return:  input item


Parameters:

array   $inputitem  

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method encodeString [line 713]

void encodeString( string $string)

Encode the input string to QR code



Parameters:

string   $string   input string to encode

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method encode_rs_char [line 2838]

parity encode_rs_char( array $rs, array $data, array $parity)

Encode a Reed-Solomon codec and returns the parity array



Tags:

return:  array


Parameters:

array   $rs   RS values
array   $data   data
array   $parity   parity

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method estimateBitsMode8 [line 1829]

int estimateBitsMode8( int $size)

estimateBitsMode8



Tags:

return:  number of bits


Parameters:

int   $size  

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method estimateBitsModeAn [line 1816]

int estimateBitsModeAn( int $size)

estimateBitsModeAn



Tags:

return:  number of bits


Parameters:

int   $size  

[ Top ]

method estimateBitsModeKanji [line 1838]

int estimateBitsModeKanji( int $size)

estimateBitsModeKanji



Tags:

return:  number of bits


Parameters:

int   $size  

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method estimateBitsModeNum [line 1795]

int estimateBitsModeNum( int $size)

estimateBitsModeNum



Tags:

return:  number of bits


Parameters:

int   $size  

[ Top ]

method estimateBitStreamSize [line 1901]

int estimateBitStreamSize( array $items, int $version)

estimateBitStreamSize



Tags:

return:  bits


Parameters:

array   $items  
int   $version  

[ Top ]

method estimateVersion [line 1944]

int estimateVersion( array $items)

estimateVersion



Tags:

return:  version


Parameters:

array   $items  

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method evaluateSymbol [line 1166]

int evaluateSymbol( int $width, array $frame)

evaluateSymbol



Tags:

return:  demerit


Parameters:

int   $width  
array   $frame  

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method generateMaskNo [line 1072]

array generateMaskNo( int $maskNo, int $width, array $frame)

Return bitmask



Tags:

return:  bitmask


Parameters:

int   $maskNo   mask number
int   $width   width
array   $frame   frame

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method getBarcodeArray [line 689]

array getBarcodeArray( )

Returns a barcode array which is readable by TCPDF



Tags:

return:  barcode array readable by TCPDF;
access:  public


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method getBitStream [line 2114]

array getBitStream( int $items)

Returns a stream of bits.



Tags:

return:  padded merged byte stream


Parameters:

int   $items  

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method getByteStream [line 2124]

array getByteStream( int $items)

Pack all bit streams padding bits into a byte array.



Tags:

return:  padded merged byte stream


Parameters:

int   $items  

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method getCode [line 918]

array getCode( )

Return Reed-Solomon block code.



Tags:

return:  rsblocks


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method getDataLength [line 2293]

int getDataLength( int $version, int $level)

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



Tags:

return:  maximum size (bytes)


Parameters:

int   $version   version
int   $level   error correction level

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method getECCLength [line 2303]

int getECCLength( int $version, int $level)

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



Tags:

return:  ECC size (bytes)


Parameters:

int   $version   version
int   $level   error correction level

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method getEccSpec [line 2393]

array getEccSpec( int $version, int $level, array $spec)

Return an array of ECC specification.



Tags:

return:  spec


Parameters:

int   $version   version
int   $level   error correction level
array   $spec   an array of ECC specification contains as following: {# of type1 blocks, # of data code, # of ecc code, # of type2 blocks, # of data code}

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method getFormatInfo [line 2501]

BCH getFormatInfo( array $mask, int $level)

Return BCH encoded format information pattern.



Tags:

return:  encoded format information pattern


Parameters:

array   $mask  
int   $level   error correction level

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method getFrameAt [line 803]

value getFrameAt( array $at)

Get frame value at specified position



Tags:

return:  at specified position


Parameters:

array   $at   x,y position

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method getMinimumVersion [line 2331]

int getMinimumVersion( int $size, int $level)

Return a version number that satisfies the input code length.



Tags:

return:  version number


Parameters:

int   $size   input code length (byte)
int   $level   error correction level

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method getNextPosition [line 811]

array getNextPosition( )

Return the next frame position



Tags:

return:  of x,y coordinates


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method getRemainder [line 2321]

int getRemainder( int $version)

Return the numer of remainder bits.



Tags:

return:  number of remainder bits


Parameters:

int   $version   version

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method getVersionPattern [line 2488]

BCH getVersionPattern( int $version)

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



Tags:

return:  encoded version information pattern


Parameters:

int   $version   version

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method getWidth [line 2312]

int getWidth( int $version)

Return the width of the symbol for the version.



Tags:

return:  width


Parameters:

int   $version   version

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method identifyMode [line 1295]

int identifyMode( int $pos)

identifyMode



Tags:

return:  mode


Parameters:

int   $pos  

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method init [line 867]

0 init( array $spec)

Initialize code.



Tags:

return:  in case of success, -1 in case of error


Parameters:

array   $spec   array of ECC specification

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method init_rs [line 2713]

array init_rs( int $symsize, int $gfpoly, int $fcr, int $prim, int $nroots, int $pad)

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



Tags:

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


Parameters:

int   $symsize   symbol size, bits
int   $gfpoly   Field generator polynomial coefficients
int   $fcr   first root of RS code generator polynomial, index form
int   $prim   primitive element to generate polynomial roots
int   $nroots   RS code generator polynomial degree (number of roots)
int   $pad   padding bytes at front of shortened block

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method init_rs_char [line 2754]

array init_rs_char( int $symsize, int $gfpoly, int $fcr, int $prim, int $nroots, int $pad)

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



Tags:

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


Parameters:

int   $symsize   symbol size, bits
int   $gfpoly   Field generator polynomial coefficients
int   $fcr   first root of RS code generator polynomial, index form
int   $prim   primitive element to generate polynomial roots
int   $nroots   RS code generator polynomial degree (number of roots)
int   $pad   padding bytes at front of shortened block

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method insertStructuredAppendHeader [line 1721]

array insertStructuredAppendHeader( array $items, int $size, int $index, int $parity)

insertStructuredAppendHeader



Tags:

return:  items


Parameters:

array   $items  
int   $size  
int   $index  
int   $parity  

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method isalnumat [line 1283]

boolean isalnumat( string $str, int $pos)

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



Tags:

return:  true of false


Parameters:

string   $str   string
int   $pos   characted position

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method isdigitat [line 1270]

boolean isdigitat( string $str, int $pos)

Return true if the character at specified position is a number



Tags:

return:  true of false


Parameters:

string   $str   string
int   $pos   characted position

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method lengthIndicator [line 2347]

int lengthIndicator( int $mode, int $version)

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



Tags:

return:  the size of the appropriate length indicator (bits).


Parameters:

int   $mode   encoding mode
int   $version   version

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method lengthOfCode [line 1965]

int lengthOfCode( int $mode, int $version, int $bits)

lengthOfCode



Tags:

return:  size


Parameters:

int   $mode  
int   $version  
int   $bits  

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method lookAnTable [line 1771]

value lookAnTable( int $c)

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



Parameters:

int   $c   character value

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method makeMask [line 1123]

array makeMask( int $width, array $frame, int $maskNo, int $level)

makeMask



Tags:

return:  mask


Parameters:

int   $width  
array   $frame  
int   $maskNo  
int   $level  

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method makeMaskNo [line 1096]

int makeMaskNo( int $maskNo, int $width, int $s, &$d, [boolean $maskGenOnly = false], int $d)

makeMaskNo



Tags:

return:  b


Parameters:

int   $maskNo  
int   $width  
int   $s  
int   $d  
boolean   $maskGenOnly  
   &$d  

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method mask [line 1228]

array mask( int $width, array $frame, int $level)

mask



Tags:

return:  best mask


Parameters:

int   $width  
array   $frame  
int   $level  

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method mask0 [line 991]

int mask0( int $x, int $y)

mask0



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask1 [line 1001]

int mask1( int $x, int $y)

mask1



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask2 [line 1011]

int mask2( int $x, int $y)

mask2



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask3 [line 1021]

int mask3( int $x, int $y)

mask3



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask4 [line 1031]

int mask4( int $x, int $y)

mask4



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask5 [line 1041]

int mask5( int $x, int $y)

mask5



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask6 [line 1051]

int mask6( int $x, int $y)

mask6



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method mask7 [line 1061]

int mask7( int $x, int $y)

mask7



Tags:

return:  mask


Parameters:

int   $x   X position
int   $y   Y position

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method maximumWords [line 2367]

int maximumWords( int $mode, int $version)

Return the maximum length for the mode and version.



Tags:

return:  the maximum length (bytes)


Parameters:

int   $mode   encoding mode
int   $version   version

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method mergeBitStream [line 2097]

array mergeBitStream( $items, array $bstream)

mergeBitStream



Tags:

return:  bitstream


Parameters:

array   $bstream  
   $items  

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method modnn [line 2736]

int modnn( array $rs, int $x)

modnn



Tags:

return:  X osition


Parameters:

int   $x   X position
array   $rs   RS values

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method newFrame [line 2605]

Array newFrame( int $version)

Set new frame for the specified version.



Tags:

return:  of unsigned char.


Parameters:

int   $version   version

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method newFromBytes [line 2168]

array newFromBytes( int $size, array $data)

Return new bitstream from bytes



Tags:

return:  bitstream


Parameters:

int   $size   size
array   $data   bytes

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method newFromNum [line 2148]

array newFromNum( int $bits, int $num)

Return new bitstream from number



Tags:

return:  bitstream


Parameters:

int   $bits   number of bits
int   $num   number

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method newInputItem [line 1522]

array newInputItem( int $mode, int $size, array $data, [array $bstream = null])

newInputItem



Tags:

return:  input item


Parameters:

int   $mode  
int   $size  
array   $data  
array   $bstream  

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method putAlignmentMarker [line 2425]

array putAlignmentMarker( array $frame, int $ox, int $oy, int $width)

Put an alignment marker.



Tags:

return:  frame


Parameters:

array   $frame   frame
int   $width   width
int   $ox   X center coordinate of the pattern
int   $oy   Y center coordinate of the pattern

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method putAlignmentPattern [line 2448]

array putAlignmentPattern( int $version, $frame, int $width, array $fram)

Put an alignment pattern.



Tags:

return:  frame


Parameters:

int   $version   version
array   $fram   frame
int   $width   width
   $frame  

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method putFinderPattern [line 2519]

array putFinderPattern( array $frame, int $ox, int $oy, int $width)

Put a finder pattern.



Tags:

return:  frame


Parameters:

array   $frame   frame
int   $width   width
int   $ox   X center coordinate of the pattern
int   $oy   Y center coordinate of the pattern

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method qrstrset [line 2282]

array qrstrset( array $srctab, int $x, int $y, string $repl, [int $replLen = false])

Replace a value on the array at the specified position



Tags:

return:  srctab


Parameters:

array   $srctab  
int   $x   X position
int   $y   Y position
string   $repl   value to replace
int   $replLen   length of the repl string

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method rsBlockNum [line 2623]

int rsBlockNum( array $spec)

Return block number 0



Tags:

return:  value


Parameters:

array   $spec  

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method rsBlockNum1 [line 2632]

int rsBlockNum1( array $spec)

Return block number 1



Tags:

return:  value


Parameters:

array   $spec  

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method rsBlockNum2 [line 2659]

int rsBlockNum2( array $spec)

Return block number 2



Tags:

return:  value


Parameters:

array   $spec  

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method rsDataCodes1 [line 2641]

int rsDataCodes1( array $spec)

Return data codes 1



Tags:

return:  value


Parameters:

array   $spec  

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method rsDataCodes2 [line 2668]

int rsDataCodes2( array $spec)

Return data codes 2



Tags:

return:  value


Parameters:

array   $spec  

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method rsDataLength [line 2686]

int rsDataLength( array $spec)

Return data length



Tags:

return:  value


Parameters:

array   $spec  

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method rsEccCodes1 [line 2650]

int rsEccCodes1( array $spec)

Return ecc codes 1



Tags:

return:  value


Parameters:

array   $spec  

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method rsEccCodes2 [line 2677]

int rsEccCodes2( array $spec)

Return ecc codes 2



Tags:

return:  value


Parameters:

array   $spec  

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method rsEccLength [line 2695]

int rsEccLength( array $spec)

Return ecc length



Tags:

return:  value


Parameters:

array   $spec  

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method setFrameAt [line 794]

void setFrameAt( array $at, int $val)

Set frame value at specified position



Parameters:

array   $at   x,y position
int   $val   value of the character to set

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method splitString [line 1452]

void splitString( )

splitString



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method toUpper [line 1493]

void toUpper( )

toUpper



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method writeFormatInformation [line 949]

int writeFormatInformation( int $width, &$frame, array $mask, int $level, array $frame)

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



Tags:

return:  blacks


Parameters:

int   $width   frame width
array   $frame   frame
array   $mask   masking mode
int   $level   error correction level
   &$frame  

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Documentation generated on Sat, 04 Dec 2010 11:24:56 +0100 by phpDocumentor 1.4.3