ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
Public Member Functions | Protected Member Functions | Protected Attributes
QRcode Class Reference

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

+ Collaboration diagram for QRcode:

Public Member Functions

 __construct ($code, $eclevel='L')
 This is the class constructor. More...
 
 getBarcodeArray ()
 Returns a barcode array which is readable by TCPDF. More...
 

Protected Member Functions

 binarize ($frame)
 Convert the frame in binary form. More...
 
 encodeString ($string)
 Encode the input string to QR code. More...
 
 encodeMask ($mask)
 Encode mask. More...
 
 setFrameAt ($at, $val)
 Set frame value at specified position. More...
 
 getFrameAt ($at)
 Get frame value at specified position. More...
 
 getNextPosition ()
 Return the next frame position. More...
 
 init ($spec)
 Initialize code. More...
 
 getCode ()
 Return Reed-Solomon block code. More...
 
 writeFormatInformation ($width, &$frame, $mask, $level)
 Write Format Information on frame and returns the number of black bits. More...
 
 mask0 ($x, $y)
 mask0 More...
 
 mask1 ($x, $y)
 mask1 More...
 
 mask2 ($x, $y)
 mask2 More...
 
 mask3 ($x, $y)
 mask3 More...
 
 mask4 ($x, $y)
 mask4 More...
 
 mask5 ($x, $y)
 mask5 More...
 
 mask6 ($x, $y)
 mask6 More...
 
 mask7 ($x, $y)
 mask7 More...
 
 generateMaskNo ($maskNo, $width, $frame)
 Return bitmask. More...
 
 makeMaskNo ($maskNo, $width, $s, &$d, $maskGenOnly=false)
 makeMaskNo More...
 
 makeMask ($width, $frame, $maskNo, $level)
 makeMask More...
 
 calcN1N3 ($length)
 calcN1N3 More...
 
 evaluateSymbol ($width, $frame)
 evaluateSymbol More...
 
 mask ($width, $frame, $level)
 mask More...
 
 isdigitat ($str, $pos)
 Return true if the character at specified position is a number. More...
 
 isalnumat ($str, $pos)
 Return true if the character at specified position is an alphanumeric character. More...
 
 identifyMode ($pos)
 identifyMode More...
 
 eatNum ()
 eatNum More...
 
 eatAn ()
 eatAn More...
 
 eatKanji ()
 eatKanji More...
 
 eat8 ()
 eat8 More...
 
 splitString ()
 splitString More...
 
 toUpper ()
 toUpper More...
 
 newInputItem ($mode, $size, $data, $bstream=null)
 newInputItem More...
 
 encodeModeNum ($inputitem, $version)
 encodeModeNum More...
 
 encodeModeAn ($inputitem, $version)
 encodeModeAn More...
 
 encodeMode8 ($inputitem, $version)
 encodeMode8 More...
 
 encodeModeKanji ($inputitem, $version)
 encodeModeKanji More...
 
 encodeModeStructure ($inputitem)
 encodeModeStructure More...
 
 encodeBitStream ($inputitem, $version)
 encodeBitStream More...
 
 appendNewInputItem ($items, $mode, $size, $data)
 Append data to an input object. More...
 
 insertStructuredAppendHeader ($items, $size, $index, $parity)
 insertStructuredAppendHeader More...
 
 calcParity ($items)
 calcParity More...
 
 checkModeNum ($size, $data)
 checkModeNum More...
 
 lookAnTable ($c)
 Look up the alphabet-numeric convesion table (see JIS X0510:2004, pp.19). More...
 
 checkModeAn ($size, $data)
 checkModeAn More...
 
 estimateBitsModeNum ($size)
 estimateBitsModeNum More...
 
 estimateBitsModeAn ($size)
 estimateBitsModeAn More...
 
 estimateBitsMode8 ($size)
 estimateBitsMode8 More...
 
 estimateBitsModeKanji ($size)
 estimateBitsModeKanji More...
 
 checkModeKanji ($size, $data)
 checkModeKanji More...
 
 check ($mode, $size, $data)
 Validate the input data. More...
 
 estimateBitStreamSize ($items, $version)
 estimateBitStreamSize More...
 
 estimateVersion ($items)
 estimateVersion More...
 
 lengthOfCode ($mode, $version, $bits)
 lengthOfCode More...
 
 createBitStream ($items)
 createBitStream More...
 
 convertData ($items)
 convertData More...
 
 appendPaddingBit ($bstream)
 Append Padding Bit to bitstream. More...
 
 mergeBitStream ($items)
 mergeBitStream More...
 
 getBitStream ($items)
 Returns a stream of bits. More...
 
 getByteStream ($items)
 Pack all bit streams padding bits into a byte array. More...
 
 allocate ($setLength)
 Return an array with zeros. More...
 
 newFromNum ($bits, $num)
 Return new bitstream from number. More...
 
 newFromBytes ($size, $data)
 Return new bitstream from bytes. More...
 
 appendBitstream ($bitstream, $append)
 Append one bitstream to another. More...
 
 appendNum ($bitstream, $bits, $num)
 Append one bitstream created from number to another. More...
 
 appendBytes ($bitstream, $size, $data)
 Append one bitstream created from bytes to another. More...
 
 bitstreamToByte ($bstream)
 Convert bitstream to bytes. More...
 
 qrstrset ($srctab, $x, $y, $repl, $replLen=false)
 Replace a value on the array at the specified position. More...
 
 getDataLength ($version, $level)
 Return maximum data code length (bytes) for the version. More...
 
 getECCLength ($version, $level)
 Return maximum error correction code length (bytes) for the version. More...
 
 getWidth ($version)
 Return the width of the symbol for the version. More...
 
 getRemainder ($version)
 Return the numer of remainder bits. More...
 
 getMinimumVersion ($size, $level)
 Return a version number that satisfies the input code length. More...
 
 lengthIndicator ($mode, $version)
 Return the size of length indicator for the mode and version. More...
 
 maximumWords ($mode, $version)
 Return the maximum length for the mode and version. More...
 
 getEccSpec ($version, $level, $spec)
 Return an array of ECC specification. More...
 
 putAlignmentMarker ($frame, $ox, $oy)
 Put an alignment marker. More...
 
 putAlignmentPattern ($version, $frame, $width)
 Put an alignment pattern. More...
 
 getVersionPattern ($version)
 Return BCH encoded version information pattern that is used for the symbol of version 7 or greater. More...
 
 getFormatInfo ($mask, $level)
 Return BCH encoded format information pattern. More...
 
 putFinderPattern ($frame, $ox, $oy)
 Put a finder pattern. More...
 
 createFrame ($version)
 Return a copy of initialized frame. More...
 
 newFrame ($version)
 Set new frame for the specified version. More...
 
 rsBlockNum ($spec)
 Return block number 0. More...
 
 rsBlockNum1 ($spec)
 Return block number 1. More...
 
 rsDataCodes1 ($spec)
 Return data codes 1. More...
 
 rsEccCodes1 ($spec)
 Return ecc codes 1. More...
 
 rsBlockNum2 ($spec)
 Return block number 2. More...
 
 rsDataCodes2 ($spec)
 Return data codes 2. More...
 
 rsEccCodes2 ($spec)
 Return ecc codes 2. More...
 
 rsDataLength ($spec)
 Return data length. More...
 
 rsEccLength ($spec)
 Return ecc length. More...
 
 init_rs ($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
 Initialize a Reed-Solomon codec and add it to existing rsitems. More...
 
 modnn ($rs, $x)
 modnn More...
 
 init_rs_char ($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
 Initialize a Reed-Solomon codec and returns an array of values. More...
 
 encode_rs_char ($rs, $data, $parity)
 Encode a Reed-Solomon codec and returns the parity array. More...
 

Protected Attributes

 $barcode_array = array()
 Barcode array to be returned which is readable by TCPDF. More...
 
 $version = 0
 QR code version. More...
 
 $level = QR_ECLEVEL_L
 Levels of error correction. More...
 
 $hint = QR_MODE_8B
 Encoding mode. More...
 
 $casesensitive = true
 Boolean flag, if true the input string will be converted to uppercase. More...
 
 $structured = 0
 Structured QR code (not supported yet). More...
 
 $data
 Mask data. More...
 
 $width
 Width. More...
 
 $frame
 Frame. More...
 
 $x
 X position of bit. More...
 
 $y
 Y position of bit. More...
 
 $dir
 Direction. More...
 
 $bit
 Single bit value. More...
 
 $datacode = array()
 Data code. More...
 
 $ecccode = array()
 Error correction code. More...
 
 $blocks
 Blocks. More...
 
 $rsblocks = array()
 Reed-Solomon blocks. More...
 
 $count
 Counter. More...
 
 $dataLength
 Data length. More...
 
 $eccLength
 Error correction length. More...
 
 $b1
 Value b1. More...
 
 $runLength = array()
 Run length. More...
 
 $dataStr = ''
 Input data string. More...
 
 $items
 Input items. More...
 
 $rsitems = array()
 Reed-Solomon items. More...
 
 $frames = array()
 Array of frames. More...
 
 $anTable
 Alphabet-numeric convesion table. More...
 
 $capacity
 Array Table of the capacity of symbols. More...
 
 $lengthTableBits
 Array Length indicator. More...
 
 $eccTable
 Array Table of the error correction code (Reed-Solomon block). More...
 
 $alignmentPattern
 Array Positions of alignment patterns. More...
 
 $versionPattern
 Array Version information pattern (BCH coded). More...
 
 $formatInfo
 Array Format information. More...
 

Detailed Description

Class to create QR-code arrays for TCPDF class.

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

This class is derived from "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.

Definition at line 291 of file qrcode.php.

Constructor & Destructor Documentation

◆ __construct()

QRcode::__construct (   $code,
  $eclevel = 'L' 
)

This is the class constructor.

Creates a QRcode object

Parameters
$code(string) code to represent using QRcode
$eclevel(string) 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.
Since
1.0.000

Definition at line 639 of file qrcode.php.

639 {
640 $barcode_array = array();
641 if ((is_null($code)) OR ($code == '\0') OR ($code == '')) {
642 return false;
643 }
644 // set error correction level
645 $this->level = array_search($eclevel, array('L', 'M', 'Q', 'H'));
646 if ($this->level === false) {
647 $this->level = QR_ECLEVEL_L;
648 }
649 if (($this->hint != QR_MODE_8B) AND ($this->hint != QR_MODE_KJ)) {
650 return false;
651 }
652 if (($this->version < 0) OR ($this->version > QRSPEC_VERSION_MAX)) {
653 return false;
654 }
655 $this->items = array();
656 $this->encodeString($code);
657 if (is_null($this->data)) {
658 return false;
659 }
660 $qrTab = $this->binarize($this->data);
661 $size = count($qrTab);
662 $barcode_array['num_rows'] = $size;
663 $barcode_array['num_cols'] = $size;
664 $barcode_array['bcode'] = array();
665 foreach ($qrTab as $line) {
666 $arrAdd = array();
667 foreach (str_split($line) as $char) {
668 $arrAdd[] = ($char=='1')?1:0;
669 }
670 $barcode_array['bcode'][] = $arrAdd;
671 }
672 $this->barcode_array = $barcode_array;
673 }
$size
$size
Definition: RandomTest.php:79
QRcode\binarize
binarize($frame)
Convert the frame in binary form.
Definition: qrcode.php:689
QRcode\$barcode_array
$barcode_array
Barcode array to be returned which is readable by TCPDF.
Definition: qrcode.php:297
QRcode\encodeString
encodeString($string)
Encode the input string to QR code.
Definition: qrcode.php:704
$code
$code
Definition: example_050.php:99

References $barcode_array, $code, $size, binarize(), and encodeString().

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Member Function Documentation

◆ allocate()

QRcode::allocate (   $setLength)
protected

Return an array with zeros.

Parameters
$setLength(int) array size
Returns
array

Definition at line 2129 of file qrcode.php.

2129 {
2130 return array_fill(0, $setLength, 0);
2131 }

Referenced by newFromBytes(), and newFromNum().

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◆ appendBitstream()

QRcode::appendBitstream (   $bitstream,
  $append 
)
protected

Append one bitstream to another.

Parameters
$bitstream(array) original bitstream
$append(array) bitstream to append
Returns
array bitstream

Definition at line 2183 of file qrcode.php.

2183 {
2184 if ((!is_array($append)) OR (count($append) == 0)) {
2185 return $bitstream;
2186 }
2187 if (count($bitstream) == 0) {
2188 return $append;
2189 }
2190 return array_values(array_merge($bitstream, $append));
2191 }

Referenced by appendBytes(), appendNum(), appendPaddingBit(), encodeBitStream(), and mergeBitStream().

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◆ appendBytes()

QRcode::appendBytes (   $bitstream,
  $size,
  $data 
)
protected

Append one bitstream created from bytes to another.

Parameters
$bitstream(array) original bitstream
$size(int) size
$data(array) bytes
Returns
array bitstream

Definition at line 2215 of file qrcode.php.

2215 {
2216 if ($size == 0) {
2217 return 0;
2218 }
2219 $b = $this->newFromBytes($size, $data);
2220 return $this->appendBitstream($bitstream, $b);
2221 }
QRcode\$data
$data
Mask data.
Definition: qrcode.php:333
QRcode\newFromBytes
newFromBytes($size, $data)
Return new bitstream from bytes.
Definition: qrcode.php:2159
QRcode\appendBitstream
appendBitstream($bitstream, $append)
Append one bitstream to another.
Definition: qrcode.php:2183

References $data, $size, appendBitstream(), and newFromBytes().

Referenced by appendPaddingBit().

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◆ appendNewInputItem()

QRcode::appendNewInputItem (   $items,
  $mode,
  $size,
  $data 
)
protected

Append data to an input object.

The data is copied and appended to the input object.

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

Definition at line 1696 of file qrcode.php.

1696 {
1697 $newitem = $this->newInputItem($mode, $size, $data);
1698 if (!empty($newitem)) {
1699 $items[] = $newitem;
1700 }
1701 return $items;
1702 }
QRcode\$items
$items
Input items.
Definition: qrcode.php:443
QRcode\newInputItem
newInputItem($mode, $size, $data, $bstream=null)
newInputItem
Definition: qrcode.php:1513

References $data, $items, $size, and newInputItem().

Referenced by eat8(), eatAn(), eatKanji(), and eatNum().

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◆ appendNum()

QRcode::appendNum (   $bitstream,
  $bits,
  $num 
)
protected

Append one bitstream created from number to another.

Parameters
$bitstream(array) original bitstream
$bits(int) number of bits
$num(int) number
Returns
array bitstream

Definition at line 2200 of file qrcode.php.

2200 {
2201 if ($bits == 0) {
2202 return 0;
2203 }
2204 $b = $this->newFromNum($bits, $num);
2205 return $this->appendBitstream($bitstream, $b);
2206 }
QRcode\newFromNum
newFromNum($bits, $num)
Return new bitstream from number.
Definition: qrcode.php:2139

References appendBitstream(), and newFromNum().

Referenced by appendPaddingBit(), encodeMode8(), encodeModeAn(), encodeModeKanji(), encodeModeNum(), and encodeModeStructure().

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◆ appendPaddingBit()

QRcode::appendPaddingBit (   $bstream)
protected

Append Padding Bit to bitstream.

Parameters
$bstream(array)
Returns
array bitstream

Definition at line 2055 of file qrcode.php.

2055 {
2056 if (is_null($bstream)) {
2057 return null;
2058 }
2059 $bits = count($bstream);
2060 $maxwords = $this->getDataLength($this->version, $this->level);
2061 $maxbits = $maxwords * 8;
2062 if ($maxbits == $bits) {
2063 return $bstream;
2064 }
2065 if ($maxbits - $bits < 5) {
2066 return $this->appendNum($bstream, $maxbits - $bits, 0);
2067 }
2068 $bits += 4;
2069 $words = (int)(($bits + 7) / 8);
2070 $padding = array();
2071 $padding = $this->appendNum($padding, $words * 8 - $bits + 4, 0);
2072 $padlen = $maxwords - $words;
2073 if ($padlen > 0) {
2074 $padbuf = array();
2075 for ($i=0; $i<$padlen; ++$i) {
2076 $padbuf[$i] = ($i&1)?0x11:0xec;
2077 }
2078 $padding = $this->appendBytes($padding, $padlen, $padbuf);
2079 }
2080 return $this->appendBitstream($bstream, $padding);
2081 }
QRcode\getDataLength
getDataLength($version, $level)
Return maximum data code length (bytes) for the version.
Definition: qrcode.php:2284
QRcode\appendBytes
appendBytes($bitstream, $size, $data)
Append one bitstream created from bytes to another.
Definition: qrcode.php:2215
QRcode\appendNum
appendNum($bitstream, $bits, $num)
Append one bitstream created from number to another.
Definition: qrcode.php:2200

References appendBitstream(), appendBytes(), appendNum(), and getDataLength().

Referenced by getBitStream().

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◆ binarize()

QRcode::binarize (   $frame)
protected

Convert the frame in binary form.

Parameters
$frame(array) array to binarize
Returns
array frame in binary form

Definition at line 689 of file qrcode.php.

689 {
690 $len = count($frame);
691 // the frame is square (width = height)
692 foreach ($frame as &$frameLine) {
693 for ($i=0; $i<$len; $i++) {
694 $frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
695 }
696 }
697 return $frame;
698 }
QRcode\$frame
$frame
Frame.
Definition: qrcode.php:347

References $frame.

Referenced by __construct().

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◆ bitstreamToByte()

QRcode::bitstreamToByte (   $bstream)
protected

Convert bitstream to bytes.

Parameters
$bstream(array) original bitstream
Returns
array of bytes

Definition at line 2228 of file qrcode.php.

2228 {
2229 if (is_null($bstream)) {
2230 return null;
2231 }
2232 $size = count($bstream);
2233 if ($size == 0) {
2234 return array();
2235 }
2236 $data = array_fill(0, (int)(($size + 7) / 8), 0);
2237 $bytes = (int)($size / 8);
2238 $p = 0;
2239 for ($i=0; $i<$bytes; $i++) {
2240 $v = 0;
2241 for ($j=0; $j<8; $j++) {
2242 $v = $v << 1;
2243 $v |= $bstream[$p];
2244 $p++;
2245 }
2246 $data[$i] = $v;
2247 }
2248 if ($size & 7) {
2249 $v = 0;
2250 for ($j=0; $j<($size & 7); $j++) {
2251 $v = $v << 1;
2252 $v |= $bstream[$p];
2253 $p++;
2254 }
2255 $data[$bytes] = $v;
2256 }
2257 return $data;
2258 }

References $data, and $size.

Referenced by getByteStream().

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◆ calcN1N3()

QRcode::calcN1N3 (   $length)
protected

calcN1N3

Parameters
$length(int)
Returns
int demerit

Definition at line 1127 of file qrcode.php.

1127 {
1128 $demerit = 0;
1129 for ($i=0; $i<$length; ++$i) {
1130 if ($this->runLength[$i] >= 5) {
1131 $demerit += (N1 + ($this->runLength[$i] - 5));
1132 }
1133 if ($i & 1) {
1134 if (($i >= 3) AND ($i < ($length-2)) AND ($this->runLength[$i] % 3 == 0)) {
1135 $fact = (int)($this->runLength[$i] / 3);
1136 if (($this->runLength[$i-2] == $fact)
1137 AND ($this->runLength[$i-1] == $fact)
1138 AND ($this->runLength[$i+1] == $fact)
1139 AND ($this->runLength[$i+2] == $fact)) {
1140 if (($this->runLength[$i-3] < 0) OR ($this->runLength[$i-3] >= (4 * $fact))) {
1141 $demerit += N3;
1142 } elseif ((($i+3) >= $length) OR ($this->runLength[$i+3] >= (4 * $fact))) {
1143 $demerit += N3;
1144 }
1145 }
1146 }
1147 }
1148 }
1149 return $demerit;
1150 }

Referenced by evaluateSymbol().

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◆ calcParity()

QRcode::calcParity (   $items)
protected

calcParity

Parameters
$items(array)
Returns
int parity

Definition at line 1730 of file qrcode.php.

1730 {
1731 $parity = 0;
1732 foreach ($items as $item) {
1733 if ($item['mode'] != QR_MODE_ST) {
1734 for ($i=$item['size']-1; $i>=0; --$i) {
1735 $parity ^= $item['data'][$i];
1736 }
1737 }
1738 }
1739 return $parity;
1740 }

References $items.

◆ check()

QRcode::check (   $mode,
  $size,
  $data 
)
protected

Validate the input data.

Parameters
$mode(int) encoding mode.
$size(int) size of data (byte).
$data(array) data to validate
Returns
boolean true in case of valid data, false otherwise

Definition at line 1859 of file qrcode.php.

1859 {
1860 if ($size <= 0) {
1861 return false;
1862 }
1863 switch($mode) {
1864 case QR_MODE_NM: {
1865 return $this->checkModeNum($size, $data);
1866 }
1867 case QR_MODE_AN: {
1868 return $this->checkModeAn($size, $data);
1869 }
1870 case QR_MODE_KJ: {
1871 return $this->checkModeKanji($size, $data);
1872 }
1873 case QR_MODE_8B: {
1874 return true;
1875 }
1876 case QR_MODE_ST: {
1877 return true;
1878 }
1879 default: {
1880 break;
1881 }
1882 }
1883 return false;
1884 }
QRcode\checkModeAn
checkModeAn($size, $data)
checkModeAn
Definition: qrcode.php:1772
QRcode\checkModeNum
checkModeNum($size, $data)
checkModeNum
Definition: qrcode.php:1748
QRcode\checkModeKanji
checkModeKanji($size, $data)
checkModeKanji
Definition: qrcode.php:1839

References $data, $size, checkModeAn(), checkModeKanji(), and checkModeNum().

Referenced by newInputItem().

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◆ checkModeAn()

QRcode::checkModeAn (   $size,
  $data 
)
protected

checkModeAn

Parameters
$size(int)
$data(array)
Returns
boolean true or false

Definition at line 1772 of file qrcode.php.

1772 {
1773 for ($i=0; $i<$size; ++$i) {
1774 if ($this->lookAnTable(ord($data[$i])) == -1) {
1775 return false;
1776 }
1777 }
1778 return true;
1779 }
QRcode\lookAnTable
lookAnTable($c)
Look up the alphabet-numeric convesion table (see JIS X0510:2004, pp.19).
Definition: qrcode.php:1762

References $data, $size, and lookAnTable().

Referenced by check().

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◆ checkModeKanji()

QRcode::checkModeKanji (   $size,
  $data 
)
protected

checkModeKanji

Parameters
$size(int)
$data(array)
Returns
boolean true or false

Definition at line 1839 of file qrcode.php.

1839 {
1840 if ($size & 1) {
1841 return false;
1842 }
1843 for ($i=0; $i<$size; $i+=2) {
1844 $val = (ord($data[$i]) << 8) | ord($data[$i+1]);
1845 if (($val < 0x8140) OR (($val > 0x9ffc) AND ($val < 0xe040)) OR ($val > 0xebbf)) {
1846 return false;
1847 }
1848 }
1849 return true;
1850 }

References $data, and $size.

Referenced by check().

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◆ checkModeNum()

QRcode::checkModeNum (   $size,
  $data 
)
protected

checkModeNum

Parameters
$size(int)
$data(array)
Returns
boolean true or false

Definition at line 1748 of file qrcode.php.

1748 {
1749 for ($i=0; $i<$size; ++$i) {
1750 if ((ord($data[$i]) < ord('0')) OR (ord($data[$i]) > ord('9'))){
1751 return false;
1752 }
1753 }
1754 return true;
1755 }

References $data, and $size.

Referenced by check().

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◆ convertData()

QRcode::convertData (   $items)
protected

convertData

Parameters
$items(array)
Returns
array items

Definition at line 2026 of file qrcode.php.

2026 {
2027 $ver = $this->estimateVersion($items);
2028 if ($ver > $this->version) {
2029 $this->version = $ver;
2030 }
2031 while (true) {
2032 $cbs = $this->createBitStream($items);
2033 $items = $cbs[0];
2034 $bits = $cbs[1];
2035 if ($bits < 0) {
2036 return -1;
2037 }
2038 $ver = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);
2039 if ($ver < 0) {
2040 return -1;
2041 } elseif ($ver > $this->version) {
2042 $this->version = $ver;
2043 } else {
2044 break;
2045 }
2046 }
2047 return $items;
2048 }
QRcode\estimateVersion
estimateVersion($items)
estimateVersion
Definition: qrcode.php:1935
QRcode\getMinimumVersion
getMinimumVersion($size, $level)
Return a version number that satisfies the input code length.
Definition: qrcode.php:2322
QRcode\createBitStream
createBitStream($items)
createBitStream
Definition: qrcode.php:2011

References $items, createBitStream(), estimateVersion(), and getMinimumVersion().

Referenced by mergeBitStream().

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◆ createBitStream()

QRcode::createBitStream (   $items)
protected

createBitStream

Parameters
$items(array)
Returns
array of items and total bits

Definition at line 2011 of file qrcode.php.

2011 {
2012 $total = 0;
2013 foreach ($items as $key => $item) {
2014 $items[$key] = $this->encodeBitStream($item, $this->version);
2015 $bits = count($items[$key]['bstream']);
2016 $total += $bits;
2017 }
2018 return array($items, $total);
2019 }
QRcode\encodeBitStream
encodeBitStream($inputitem, $version)
encodeBitStream
Definition: qrcode.php:1641

References $items, $total, and encodeBitStream().

Referenced by convertData().

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◆ createFrame()

QRcode::createFrame (   $version)
protected

Return a copy of initialized frame.

Parameters
$version(int) version
Returns
Array of unsigned char.

Definition at line 2530 of file qrcode.php.

2530 {
2531 $width = $this->capacity[$version][QRCAP_WIDTH];
2532 $frameLine = str_repeat ("\0", $width);
2533 $frame = array_fill(0, $width, $frameLine);
2534 // Finder pattern
2535 $frame = $this->putFinderPattern($frame, 0, 0);
2536 $frame = $this->putFinderPattern($frame, $width - 7, 0);
2537 $frame = $this->putFinderPattern($frame, 0, $width - 7);
2538 // Separator
2539 $yOffset = $width - 7;
2540 for ($y=0; $y < 7; ++$y) {
2541 $frame[$y][7] = "\xc0";
2542 $frame[$y][$width - 8] = "\xc0";
2543 $frame[$yOffset][7] = "\xc0";
2544 ++$yOffset;
2545 }
2546 $setPattern = str_repeat("\xc0", 8);
2547 $frame = $this->qrstrset($frame, 0, 7, $setPattern);
2548 $frame = $this->qrstrset($frame, $width-8, 7, $setPattern);
2549 $frame = $this->qrstrset($frame, 0, $width - 8, $setPattern);
2550 // Format info
2551 $setPattern = str_repeat("\x84", 9);
2552 $frame = $this->qrstrset($frame, 0, 8, $setPattern);
2553 $frame = $this->qrstrset($frame, $width - 8, 8, $setPattern, 8);
2554 $yOffset = $width - 8;
2555 for ($y=0; $y < 8; ++$y,++$yOffset) {
2556 $frame[$y][8] = "\x84";
2557 $frame[$yOffset][8] = "\x84";
2558 }
2559 // Timing pattern
2560 $wo = $width - 15;
2561 for ($i=1; $i < $wo; ++$i) {
2562 $frame[6][7+$i] = chr(0x90 | ($i & 1));
2563 $frame[7+$i][6] = chr(0x90 | ($i & 1));
2564 }
2565 // Alignment pattern
2566 $frame = $this->putAlignmentPattern($version, $frame, $width);
2567 // Version information
2568 if ($version >= 7) {
2569 $vinf = $this->getVersionPattern($version);
2570 $v = $vinf;
2571 for ($x=0; $x<6; ++$x) {
2572 for ($y=0; $y<3; ++$y) {
2573 $frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));
2574 $v = $v >> 1;
2575 }
2576 }
2577 $v = $vinf;
2578 for ($y=0; $y<6; ++$y) {
2579 for ($x=0; $x<3; ++$x) {
2580 $frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));
2581 $v = $v >> 1;
2582 }
2583 }
2584 }
2585 // and a little bit...
2586 $frame[$width - 8][8] = "\x81";
2587 return $frame;
2588 }
QRcode\putFinderPattern
putFinderPattern($frame, $ox, $oy)
Put a finder pattern.
Definition: qrcode.php:2509
QRcode\$x
$x
X position of bit.
Definition: qrcode.php:353
QRcode\$version
$version
QR code version.
Definition: qrcode.php:303
QRcode\putAlignmentPattern
putAlignmentPattern($version, $frame, $width)
Put an alignment pattern.
Definition: qrcode.php:2439
QRcode\$y
$y
Y position of bit.
Definition: qrcode.php:359
QRcode\getVersionPattern
getVersionPattern($version)
Return BCH encoded version information pattern that is used for the symbol of version 7 or greater.
Definition: qrcode.php:2479
QRcode\$width
$width
Width.
Definition: qrcode.php:341
QRcode\qrstrset
qrstrset($srctab, $x, $y, $repl, $replLen=false)
Replace a value on the array at the specified position.
Definition: qrcode.php:2273

References $frame, $version, $width, $x, $y, getVersionPattern(), putAlignmentPattern(), putFinderPattern(), and qrstrset().

Referenced by newFrame().

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◆ eat8()

QRcode::eat8 ( )
protected

eat8

Returns
int run

Definition at line 1396 of file qrcode.php.

1396 {
1397 $la = $this->lengthIndicator(QR_MODE_AN, $this->version);
1398 $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
1399 $p = 1;
1400 $dataStrLen = strlen($this->dataStr);
1401 while($p < $dataStrLen) {
1402 $mode = $this->identifyMode($p);
1403 if ($mode == QR_MODE_KJ) {
1404 break;
1405 }
1406 if ($mode == QR_MODE_NM) {
1407 $q = $p;
1408 while($this->isdigitat($this->dataStr, $q)) {
1409 $q++;
1410 }
1411 $dif = $this->estimateBitsMode8($p) // + 4 + l8
1412 + $this->estimateBitsModeNum($q - $p) + 4 + $ln
1413 - $this->estimateBitsMode8($q); // - 4 - l8
1414 if ($dif < 0) {
1415 break;
1416 } else {
1417 $p = $q;
1418 }
1419 } elseif ($mode == QR_MODE_AN) {
1420 $q = $p;
1421 while($this->isalnumat($this->dataStr, $q)) {
1422 $q++;
1423 }
1424 $dif = $this->estimateBitsMode8($p) // + 4 + l8
1425 + $this->estimateBitsModeAn($q - $p) + 4 + $la
1426 - $this->estimateBitsMode8($q); // - 4 - l8
1427 if ($dif < 0) {
1428 break;
1429 } else {
1430 $p = $q;
1431 }
1432 } else {
1433 $p++;
1434 }
1435 }
1436 $run = $p;
1437 $this->items = $this->appendNewInputItem($this->items, QR_MODE_8B, $run, str_split($this->dataStr));
1438 return $run;
1439 }
QRcode\isalnumat
isalnumat($str, $pos)
Return true if the character at specified position is an alphanumeric character.
Definition: qrcode.php:1275
QRcode\estimateBitsMode8
estimateBitsMode8($size)
estimateBitsMode8
Definition: qrcode.php:1820
QRcode\estimateBitsModeAn
estimateBitsModeAn($size)
estimateBitsModeAn
Definition: qrcode.php:1807
QRcode\identifyMode
identifyMode($pos)
identifyMode
Definition: qrcode.php:1287
QRcode\estimateBitsModeNum
estimateBitsModeNum($size)
estimateBitsModeNum
Definition: qrcode.php:1786
QRcode\lengthIndicator
lengthIndicator($mode, $version)
Return the size of length indicator for the mode and version.
Definition: qrcode.php:2339
QRcode\appendNewInputItem
appendNewInputItem($items, $mode, $size, $data)
Append data to an input object.
Definition: qrcode.php:1696
QRcode\isdigitat
isdigitat($str, $pos)
Return true if the character at specified position is a number.
Definition: qrcode.php:1262

References appendNewInputItem(), estimateBitsMode8(), estimateBitsModeAn(), estimateBitsModeNum(), identifyMode(), isalnumat(), isdigitat(), and lengthIndicator().

Referenced by eatAn(), eatNum(), and splitString().

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◆ eatAn()

QRcode::eatAn ( )
protected

eatAn

Returns
int run

Definition at line 1344 of file qrcode.php.

1344 {
1345 $la = $this->lengthIndicator(QR_MODE_AN, $this->version);
1346 $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
1347 $p =1 ;
1348 while($this->isalnumat($this->dataStr, $p)) {
1349 if ($this->isdigitat($this->dataStr, $p)) {
1350 $q = $p;
1351 while($this->isdigitat($this->dataStr, $q)) {
1352 $q++;
1353 }
1354 $dif = $this->estimateBitsModeAn($p) // + 4 + la
1355 + $this->estimateBitsModeNum($q - $p) + 4 + $ln
1356 - $this->estimateBitsModeAn($q); // - 4 - la
1357 if ($dif < 0) {
1358 break;
1359 } else {
1360 $p = $q;
1361 }
1362 } else {
1363 $p++;
1364 }
1365 }
1366 $run = $p;
1367 if (!$this->isalnumat($this->dataStr, $p)) {
1368 $dif = $this->estimateBitsModeAn($run) + 4 + $la
1369 + $this->estimateBitsMode8(1) // + 4 + l8
1370 - $this->estimateBitsMode8($run + 1); // - 4 - l8
1371 if ($dif > 0) {
1372 return $this->eat8();
1373 }
1374 }
1375 $this->items = $this->appendNewInputItem($this->items, QR_MODE_AN, $run, str_split($this->dataStr));
1376 return $run;
1377 }
QRcode\eat8
eat8()
eat8
Definition: qrcode.php:1396

References appendNewInputItem(), eat8(), estimateBitsMode8(), estimateBitsModeAn(), estimateBitsModeNum(), isalnumat(), isdigitat(), and lengthIndicator().

Referenced by eatNum(), and splitString().

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◆ eatKanji()

QRcode::eatKanji ( )
protected

eatKanji

Returns
int run

Definition at line 1383 of file qrcode.php.

1383 {
1384 $p = 0;
1385 while($this->identifyMode($p) == QR_MODE_KJ) {
1386 $p += 2;
1387 }
1388 $this->items = $this->appendNewInputItem($this->items, QR_MODE_KJ, $p, str_split($this->dataStr));
1389 return $run;
1390 }

References appendNewInputItem(), and identifyMode().

Referenced by splitString().

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◆ eatNum()

QRcode::eatNum ( )
protected

eatNum

Returns
int run

Definition at line 1312 of file qrcode.php.

1312 {
1313 $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
1314 $p = 0;
1315 while($this->isdigitat($this->dataStr, $p)) {
1316 $p++;
1317 }
1318 $run = $p;
1319 $mode = $this->identifyMode($p);
1320 if ($mode == QR_MODE_8B) {
1321 $dif = $this->estimateBitsModeNum($run) + 4 + $ln
1322 + $this->estimateBitsMode8(1) // + 4 + l8
1323 - $this->estimateBitsMode8($run + 1); // - 4 - l8
1324 if ($dif > 0) {
1325 return $this->eat8();
1326 }
1327 }
1328 if ($mode == QR_MODE_AN) {
1329 $dif = $this->estimateBitsModeNum($run) + 4 + $ln
1330 + $this->estimateBitsModeAn(1) // + 4 + la
1331 - $this->estimateBitsModeAn($run + 1);// - 4 - la
1332 if ($dif > 0) {
1333 return $this->eatAn();
1334 }
1335 }
1336 $this->items = $this->appendNewInputItem($this->items, QR_MODE_NM, $run, str_split($this->dataStr));
1337 return $run;
1338 }
QRcode\eatAn
eatAn()
eatAn
Definition: qrcode.php:1344

References appendNewInputItem(), eat8(), eatAn(), estimateBitsMode8(), estimateBitsModeAn(), estimateBitsModeNum(), identifyMode(), isdigitat(), and lengthIndicator().

Referenced by splitString().

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◆ encode_rs_char()

QRcode::encode_rs_char (   $rs,
  $data,
  $parity 
)
protected

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

Parameters
$rs(array) RS values
$data(array) data
$parity(array) parity
Returns
parity array

Definition at line 2828 of file qrcode.php.

2828 {
2829 $MM =& $rs['mm']; // bits per symbol
2830 $NN =& $rs['nn']; // the total number of symbols in a RS block
2831 $ALPHA_TO =& $rs['alpha_to']; // the address of an array of NN elements to convert Galois field elements in index (log) form to polynomial form
2832 $INDEX_OF =& $rs['index_of']; // the address of an array of NN elements to convert Galois field elements in polynomial form to index (log) form
2833 $GENPOLY =& $rs['genpoly']; // an array of NROOTS+1 elements containing the generator polynomial in index form
2834 $NROOTS =& $rs['nroots']; // the number of roots in the RS code generator polynomial, which is the same as the number of parity symbols in a block
2835 $FCR =& $rs['fcr']; // first consecutive root, index form
2836 $PRIM =& $rs['prim']; // primitive element, index form
2837 $IPRIM =& $rs['iprim']; // prim-th root of 1, index form
2838 $PAD =& $rs['pad']; // the number of pad symbols in a block
2839 $A0 =& $NN;
2840 $parity = array_fill(0, $NROOTS, 0);
2841 for ($i=0; $i < ($NN - $NROOTS - $PAD); $i++) {
2842 $feedback = $INDEX_OF[$data[$i] ^ $parity[0]];
2843 if ($feedback != $A0) {
2844 // feedback term is non-zero
2845 // This line is unnecessary when GENPOLY[NROOTS] is unity, as it must
2846 // always be for the polynomials constructed by init_rs()
2847 $feedback = $this->modnn($rs, $NN - $GENPOLY[$NROOTS] + $feedback);
2848 for ($j=1; $j < $NROOTS; ++$j) {
2849 $parity[$j] ^= $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[($NROOTS - $j)])];
2850 }
2851 }
2852 // Shift
2853 array_shift($parity);
2854 if ($feedback != $A0) {
2855 array_push($parity, $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[0])]);
2856 } else {
2857 array_push($parity, 0);
2858 }
2859 }
2860 return $parity;
2861 }
QRcode\modnn
modnn($rs, $x)
modnn
Definition: qrcode.php:2726

References $data, and modnn().

Referenced by init().

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◆ encodeBitStream()

QRcode::encodeBitStream (   $inputitem,
  $version 
)
protected

encodeBitStream

Parameters
$inputitem(array)
$version(int)
Returns
array input item

Definition at line 1641 of file qrcode.php.

1641 {
1642 $inputitem['bstream'] = array();
1643 $words = $this->maximumWords($inputitem['mode'], $version);
1644 if ($inputitem['size'] > $words) {
1645 $st1 = $this->newInputItem($inputitem['mode'], $words, $inputitem['data']);
1646 $st2 = $this->newInputItem($inputitem['mode'], $inputitem['size'] - $words, array_slice($inputitem['data'], $words));
1647 $st1 = $this->encodeBitStream($st1, $version);
1648 $st2 = $this->encodeBitStream($st2, $version);
1649 $inputitem['bstream'] = array();
1650 $inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st1['bstream']);
1651 $inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st2['bstream']);
1652 } else {
1653 switch($inputitem['mode']) {
1654 case QR_MODE_NM: {
1655 $inputitem = $this->encodeModeNum($inputitem, $version);
1656 break;
1657 }
1658 case QR_MODE_AN: {
1659 $inputitem = $this->encodeModeAn($inputitem, $version);
1660 break;
1661 }
1662 case QR_MODE_8B: {
1663 $inputitem = $this->encodeMode8($inputitem, $version);
1664 break;
1665 }
1666 case QR_MODE_KJ: {
1667 $inputitem = $this->encodeModeKanji($inputitem, $version);
1668 break;
1669 }
1670 case QR_MODE_ST: {
1671 $inputitem = $this->encodeModeStructure($inputitem);
1672 break;
1673 }
1674 default: {
1675 break;
1676 }
1677 }
1678 }
1679 return $inputitem;
1680 }
QRcode\maximumWords
maximumWords($mode, $version)
Return the maximum length for the mode and version.
Definition: qrcode.php:2359
QRcode\encodeModeStructure
encodeModeStructure($inputitem)
encodeModeStructure
Definition: qrcode.php:1626
QRcode\encodeModeAn
encodeModeAn($inputitem, $version)
encodeModeAn
Definition: qrcode.php:1564
QRcode\encodeMode8
encodeMode8($inputitem, $version)
encodeMode8
Definition: qrcode.php:1587
QRcode\encodeModeNum
encodeModeNum($inputitem, $version)
encodeModeNum
Definition: qrcode.php:1535
QRcode\encodeModeKanji
encodeModeKanji($inputitem, $version)
encodeModeKanji
Definition: qrcode.php:1603

References $version, appendBitstream(), encodeBitStream(), encodeMode8(), encodeModeAn(), encodeModeKanji(), encodeModeNum(), encodeModeStructure(), maximumWords(), and newInputItem().

Referenced by createBitStream(), and encodeBitStream().

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◆ encodeMask()

QRcode::encodeMask (   $mask)
protected

Encode mask.

Parameters
$mask(int) masking mode

Definition at line 720 of file qrcode.php.

720 {
721 $spec = array(0, 0, 0, 0, 0);
722 $this->datacode = $this->getByteStream($this->items);
723
724 if (is_null($this->datacode)) {
725 return NULL;
726 }
727 $spec = $this->getEccSpec($this->version, $this->level, $spec);
728 $this->b1 = $this->rsBlockNum1($spec);
729 $this->dataLength = $this->rsDataLength($spec);
730 $this->eccLength = $this->rsEccLength($spec);
731 $this->ecccode = array_fill(0, $this->eccLength, 0);
732 $this->blocks = $this->rsBlockNum($spec);
733 $ret = $this->init($spec);
734 if ($ret < 0) {
735 return NULL;
736 }
737 $this->count = 0;
738 $this->width = $this->getWidth($this->version);
739 $this->frame = $this->newFrame($this->version);
740 $this->x = $this->width - 1;
741 $this->y = $this->width - 1;
742 $this->dir = -1;
743 $this->bit = -1;
744 // inteleaved data and ecc codes
745 for ($i=0; $i < ($this->dataLength + $this->eccLength); $i++) {
746 $code = $this->getCode();
747 $bit = 0x80;
748 for ($j=0; $j<8; $j++) {
749 $addr = $this->getNextPosition();
750 $this->setFrameAt($addr, 0x02 | (($bit & $code) != 0));
751 $bit = $bit >> 1;
752 }
753 }
754 // remainder bits
755 $j = $this->getRemainder($this->version);
756 for ($i=0; $i<$j; $i++) {
757 $addr = $this->getNextPosition();
758 $this->setFrameAt($addr, 0x02);
759 }
760 // masking
761 $this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
762 if ($mask < 0) {
763 if (QR_FIND_BEST_MASK) {
764 $masked = $this->mask($this->width, $this->frame, $this->level);
765 } else {
766 $masked = $this->makeMask($this->width, $this->frame, (intval(QR_DEFAULT_MASK) % 8), $this->level);
767 }
768 } else {
769 $masked = $this->makeMask($this->width, $this->frame, $mask, $this->level);
770 }
771 if ($masked == NULL) {
772 return NULL;
773 }
774 $this->data = $masked;
775 }
$ret
$ret
Definition: Structures_BibTex_example.php:7
QRcode\getByteStream
getByteStream($items)
Pack all bit streams padding bits into a byte array.
Definition: qrcode.php:2115
QRcode\getEccSpec
getEccSpec($version, $level, $spec)
Return an array of ECC specification.
Definition: qrcode.php:2385
QRcode\setFrameAt
setFrameAt($at, $val)
Set frame value at specified position.
Definition: qrcode.php:786
QRcode\rsBlockNum
rsBlockNum($spec)
Return block number 0.
Definition: qrcode.php:2613
QRcode\$eccLength
$eccLength
Error correction length.
Definition: qrcode.php:415
QRcode\rsEccLength
rsEccLength($spec)
Return ecc length.
Definition: qrcode.php:2685
QRcode\mask
mask($width, $frame, $level)
mask
Definition: qrcode.php:1220
QRcode\getNextPosition
getNextPosition()
Return the next frame position.
Definition: qrcode.php:803
QRcode\getCode
getCode()
Return Reed-Solomon block code.
Definition: qrcode.php:910
QRcode\$bit
$bit
Single bit value.
Definition: qrcode.php:371
QRcode\newFrame
newFrame($version)
Set new frame for the specified version.
Definition: qrcode.php:2595
QRcode\getWidth
getWidth($version)
Return the width of the symbol for the version.
Definition: qrcode.php:2303
QRcode\getRemainder
getRemainder($version)
Return the numer of remainder bits.
Definition: qrcode.php:2312
QRcode\rsDataLength
rsDataLength($spec)
Return data length.
Definition: qrcode.php:2676
QRcode\rsBlockNum1
rsBlockNum1($spec)
Return block number 1.
Definition: qrcode.php:2622
QRcode\makeMask
makeMask($width, $frame, $maskNo, $level)
makeMask
Definition: qrcode.php:1115
QRcode\init
init($spec)
Initialize code.
Definition: qrcode.php:859
$mask
$mask
Definition: example_042.php:90

References $bit, $code, $eccLength, $mask, $ret, getByteStream(), getCode(), getEccSpec(), getNextPosition(), getRemainder(), getWidth(), init(), makeMask(), mask(), newFrame(), rsBlockNum(), rsBlockNum1(), rsDataLength(), rsEccLength(), and setFrameAt().

Referenced by encodeString().

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◆ encodeMode8()

QRcode::encodeMode8 (   $inputitem,
  $version 
)
protected

encodeMode8

Parameters
$inputitem(array)
$version(int)
Returns
array input item

Definition at line 1587 of file qrcode.php.

1587 {
1588 $inputitem['bstream'] = array();
1589 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x4);
1590 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_8B, $version), $inputitem['size']);
1591 for ($i=0; $i < $inputitem['size']; ++$i) {
1592 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][$i]));
1593 }
1594 return $inputitem;
1595 }

References $version, appendNum(), and lengthIndicator().

Referenced by encodeBitStream().

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◆ encodeModeAn()

QRcode::encodeModeAn (   $inputitem,
  $version 
)
protected

encodeModeAn

Parameters
$inputitem(array)
$version(int)
Returns
array input item

Definition at line 1564 of file qrcode.php.

1564 {
1565 $words = (int)($inputitem['size'] / 2);
1566 $inputitem['bstream'] = array();
1567 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x02);
1568 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_AN, $version), $inputitem['size']);
1569 for ($i=0; $i < $words; ++$i) {
1570 $val = (int)($this->lookAnTable(ord($inputitem['data'][$i*2])) * 45);
1571 $val += (int)($this->lookAnTable(ord($inputitem['data'][($i*2)+1])));
1572 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 11, $val);
1573 }
1574 if ($inputitem['size'] & 1) {
1575 $val = $this->lookAnTable(ord($inputitem['data'][($words * 2)]));
1576 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 6, $val);
1577 }
1578 return $inputitem;
1579 }

References $version, appendNum(), lengthIndicator(), and lookAnTable().

Referenced by encodeBitStream().

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◆ encodeModeKanji()

QRcode::encodeModeKanji (   $inputitem,
  $version 
)
protected

encodeModeKanji

Parameters
$inputitem(array)
$version(int)
Returns
array input item

Definition at line 1603 of file qrcode.php.

1603 {
1604 $inputitem['bstream'] = array();
1605 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x8);
1606 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_KJ, $version), (int)($inputitem['size'] / 2));
1607 for ($i=0; $i<$inputitem['size']; $i+=2) {
1608 $val = (ord($inputitem['data'][$i]) << 8) | ord($inputitem['data'][$i+1]);
1609 if ($val <= 0x9ffc) {
1610 $val -= 0x8140;
1611 } else {
1612 $val -= 0xc140;
1613 }
1614 $h = ($val >> 8) * 0xc0;
1615 $val = ($val & 0xff) + $h;
1616 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 13, $val);
1617 }
1618 return $inputitem;
1619 }
$h
$h
Definition: example_009.php:101

References $h, $version, appendNum(), and lengthIndicator().

Referenced by encodeBitStream().

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◆ encodeModeNum()

QRcode::encodeModeNum (   $inputitem,
  $version 
)
protected

encodeModeNum

Parameters
$inputitem(array)
$version(int)
Returns
array input item

Definition at line 1535 of file qrcode.php.

1535 {
1536 $words = (int)($inputitem['size'] / 3);
1537 $inputitem['bstream'] = array();
1538 $val = 0x1;
1539 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);
1540 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_NM, $version), $inputitem['size']);
1541 for ($i=0; $i < $words; ++$i) {
1542 $val = (ord($inputitem['data'][$i*3 ]) - ord('0')) * 100;
1543 $val += (ord($inputitem['data'][$i*3+1]) - ord('0')) * 10;
1544 $val += (ord($inputitem['data'][$i*3+2]) - ord('0'));
1545 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 10, $val);
1546 }
1547 if ($inputitem['size'] - $words * 3 == 1) {
1548 $val = ord($inputitem['data'][$words*3]) - ord('0');
1549 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);
1550 } elseif (($inputitem['size'] - ($words * 3)) == 2) {
1551 $val = (ord($inputitem['data'][$words*3 ]) - ord('0')) * 10;
1552 $val += (ord($inputitem['data'][$words*3+1]) - ord('0'));
1553 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 7, $val);
1554 }
1555 return $inputitem;
1556 }

References $version, appendNum(), and lengthIndicator().

Referenced by encodeBitStream().

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◆ encodeModeStructure()

QRcode::encodeModeStructure (   $inputitem)
protected

encodeModeStructure

Parameters
$inputitem(array)
Returns
array input item

Definition at line 1626 of file qrcode.php.

1626 {
1627 $inputitem['bstream'] = array();
1628 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x03);
1629 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][1]) - 1);
1630 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][0]) - 1);
1631 $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][2]));
1632 return $inputitem;
1633 }

References appendNum().

Referenced by encodeBitStream().

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◆ encodeString()

QRcode::encodeString (   $string)
protected

Encode the input string to QR code.

Parameters
$string(string) input string to encode

Definition at line 704 of file qrcode.php.

704 {
705 $this->dataStr = $string;
706 if (!$this->casesensitive) {
707 $this->toUpper();
708 }
709 $ret = $this->splitString();
710 if ($ret < 0) {
711 return NULL;
712 }
713 $this->encodeMask(-1);
714 }
QRcode\encodeMask
encodeMask($mask)
Encode mask.
Definition: qrcode.php:720
QRcode\splitString
splitString()
splitString
Definition: qrcode.php:1445
QRcode\toUpper
toUpper()
toUpper
Definition: qrcode.php:1484

References $ret, encodeMask(), splitString(), and toUpper().

Referenced by __construct().

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◆ estimateBitsMode8()

QRcode::estimateBitsMode8 (   $size)
protected

estimateBitsMode8

Parameters
$size(int)
Returns
int number of bits

Definition at line 1820 of file qrcode.php.

1820 {
1821 return (int)($size * 8);
1822 }

References $size.

Referenced by eat8(), eatAn(), eatNum(), and estimateBitStreamSize().

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◆ estimateBitsModeAn()

QRcode::estimateBitsModeAn (   $size)
protected

estimateBitsModeAn

Parameters
$size(int)
Returns
int number of bits

Definition at line 1807 of file qrcode.php.

1807 {
1808 $bits = (int)($size * 5.5); // (size / 2 ) * 11
1809 if ($size & 1) {
1810 $bits += 6;
1811 }
1812 return $bits;
1813 }

References $size.

Referenced by eat8(), eatAn(), eatNum(), and estimateBitStreamSize().

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◆ estimateBitsModeKanji()

QRcode::estimateBitsModeKanji (   $size)
protected

estimateBitsModeKanji

Parameters
$size(int)
Returns
int number of bits

Definition at line 1829 of file qrcode.php.

1829 {
1830 return (int)($size * 6.5); // (size / 2 ) * 13
1831 }

References $size.

Referenced by estimateBitStreamSize().

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◆ estimateBitsModeNum()

QRcode::estimateBitsModeNum (   $size)
protected

estimateBitsModeNum

Parameters
$size(int)
Returns
int number of bits

Definition at line 1786 of file qrcode.php.

1786 {
1787 $w = (int)($size / 3);
1788 $bits = ($w * 10);
1789 switch($size - ($w * 3)) {
1790 case 1: {
1791 $bits += 4;
1792 break;
1793 }
1794 case 2: {
1795 $bits += 7;
1796 break;
1797 }
1798 }
1799 return $bits;
1800 }
$w
$w
Definition: example_009.php:100

References $size, and $w.

Referenced by eat8(), eatAn(), eatNum(), and estimateBitStreamSize().

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◆ estimateBitStreamSize()

QRcode::estimateBitStreamSize (   $items,
  $version 
)
protected

estimateBitStreamSize

Parameters
$items(array)
$version(int)
Returns
int bits

Definition at line 1892 of file qrcode.php.

1892 {
1893 $bits = 0;
1894 if ($version == 0) {
1895 $version = 1;
1896 }
1897 foreach ($items as $item) {
1898 switch($item['mode']) {
1899 case QR_MODE_NM: {
1900 $bits = $this->estimateBitsModeNum($item['size']);
1901 break;
1902 }
1903 case QR_MODE_AN: {
1904 $bits = $this->estimateBitsModeAn($item['size']);
1905 break;
1906 }
1907 case QR_MODE_8B: {
1908 $bits = $this->estimateBitsMode8($item['size']);
1909 break;
1910 }
1911 case QR_MODE_KJ: {
1912 $bits = $this->estimateBitsModeKanji($item['size']);
1913 break;
1914 }
1915 case QR_MODE_ST: {
1916 return STRUCTURE_HEADER_BITS;
1917 }
1918 default: {
1919 return 0;
1920 }
1921 }
1922 $l = $this->lengthIndicator($item['mode'], $version);
1923 $m = 1 << $l;
1924 $num = (int)(($item['size'] + $m - 1) / $m);
1925 $bits += $num * (4 + $l);
1926 }
1927 return $bits;
1928 }
$l
global $l
Definition: afr.php:30
QRcode\estimateBitsModeKanji
estimateBitsModeKanji($size)
estimateBitsModeKanji
Definition: qrcode.php:1829

References $items, $l, $version, estimateBitsMode8(), estimateBitsModeAn(), estimateBitsModeKanji(), estimateBitsModeNum(), and lengthIndicator().

Referenced by estimateVersion().

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◆ estimateVersion()

QRcode::estimateVersion (   $items)
protected

estimateVersion

Parameters
$items(array)
Returns
int version

Definition at line 1935 of file qrcode.php.

1935 {
1936 $version = 0;
1937 $prev = 0;
1938 do {
1939 $prev = $version;
1940 $bits = $this->estimateBitStreamSize($items, $prev);
1941 $version = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);
1942 if ($version < 0) {
1943 return -1;
1944 }
1945 } while ($version > $prev);
1946 return $version;
1947 }
QRcode\estimateBitStreamSize
estimateBitStreamSize($items, $version)
estimateBitStreamSize
Definition: qrcode.php:1892

References $items, $version, estimateBitStreamSize(), and getMinimumVersion().

Referenced by convertData().

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◆ evaluateSymbol()

QRcode::evaluateSymbol (   $width,
  $frame 
)
protected

evaluateSymbol

Parameters
$width(int)
$frame(array)
Returns
int demerit

Definition at line 1158 of file qrcode.php.

1158 {
1159 $head = 0;
1160 $demerit = 0;
1161 for ($y=0; $y<$width; ++$y) {
1162 $head = 0;
1163 $this->runLength[0] = 1;
1164 $frameY = $frame[$y];
1165 if ($y > 0) {
1166 $frameYM = $frame[$y-1];
1167 }
1168 for ($x=0; $x<$width; ++$x) {
1169 if (($x > 0) AND ($y > 0)) {
1170 $b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);
1171 $w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);
1172 if (($b22 | ($w22 ^ 1)) & 1) {
1173 $demerit += N2;
1174 }
1175 }
1176 if (($x == 0) AND (ord($frameY[$x]) & 1)) {
1177 $this->runLength[0] = -1;
1178 $head = 1;
1179 $this->runLength[$head] = 1;
1180 } elseif ($x > 0) {
1181 if ((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) {
1182 $head++;
1183 $this->runLength[$head] = 1;
1184 } else {
1185 $this->runLength[$head]++;
1186 }
1187 }
1188 }
1189 $demerit += $this->calcN1N3($head+1);
1190 }
1191 for ($x=0; $x<$width; ++$x) {
1192 $head = 0;
1193 $this->runLength[0] = 1;
1194 for ($y=0; $y<$width; ++$y) {
1195 if (($y == 0) AND (ord($frame[$y][$x]) & 1)) {
1196 $this->runLength[0] = -1;
1197 $head = 1;
1198 $this->runLength[$head] = 1;
1199 } elseif ($y > 0) {
1200 if ((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) {
1201 $head++;
1202 $this->runLength[$head] = 1;
1203 } else {
1204 $this->runLength[$head]++;
1205 }
1206 }
1207 }
1208 $demerit += $this->calcN1N3($head+1);
1209 }
1210 return $demerit;
1211 }
QRcode\calcN1N3
calcN1N3($length)
calcN1N3
Definition: qrcode.php:1127

References $frame, $width, $x, $y, and calcN1N3().

Referenced by mask().

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◆ generateMaskNo()

QRcode::generateMaskNo (   $maskNo,
  $width,
  $frame 
)
protected

Return bitmask.

Parameters
$maskNo(int) mask number
$width(int) width
$frame(array) frame
Returns
array bitmask

Definition at line 1064 of file qrcode.php.

1064 {
1065 $bitMask = array_fill(0, $width, array_fill(0, $width, 0));
1066 for ($y=0; $y<$width; ++$y) {
1067 for ($x=0; $x<$width; ++$x) {
1068 if (ord($frame[$y][$x]) & 0x80) {
1069 $bitMask[$y][$x] = 0;
1070 } else {
1071 $maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y);
1072 $bitMask[$y][$x] = ($maskFunc == 0)?1:0;
1073 }
1074 }
1075 }
1076 return $bitMask;
1077 }

References $frame, $width, $x, and $y.

Referenced by makeMaskNo().

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◆ getBarcodeArray()

QRcode::getBarcodeArray ( )

Returns a barcode array which is readable by TCPDF.

Returns
array barcode array readable by TCPDF;

Definition at line 680 of file qrcode.php.

680 {
681 return $this->barcode_array;
682 }

References $barcode_array.

◆ getBitStream()

QRcode::getBitStream (   $items)
protected

Returns a stream of bits.

Parameters
$items(int)
Returns
array padded merged byte stream

Definition at line 2105 of file qrcode.php.

2105 {
2106 $bstream = $this->mergeBitStream($items);
2107 return $this->appendPaddingBit($bstream);
2108 }
QRcode\mergeBitStream
mergeBitStream($items)
mergeBitStream
Definition: qrcode.php:2088
QRcode\appendPaddingBit
appendPaddingBit($bstream)
Append Padding Bit to bitstream.
Definition: qrcode.php:2055

References $items, appendPaddingBit(), and mergeBitStream().

Referenced by getByteStream().

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◆ getByteStream()

QRcode::getByteStream (   $items)
protected

Pack all bit streams padding bits into a byte array.

Parameters
$items(int)
Returns
array padded merged byte stream

Definition at line 2115 of file qrcode.php.

2115 {
2116 $bstream = $this->getBitStream($items);
2117 return $this->bitstreamToByte($bstream);
2118 }
QRcode\bitstreamToByte
bitstreamToByte($bstream)
Convert bitstream to bytes.
Definition: qrcode.php:2228
QRcode\getBitStream
getBitStream($items)
Returns a stream of bits.
Definition: qrcode.php:2105

References $items, bitstreamToByte(), and getBitStream().

Referenced by encodeMask().

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◆ getCode()

QRcode::getCode ( )
protected

Return Reed-Solomon block code.

Returns
array rsblocks

Definition at line 910 of file qrcode.php.

910 {
911 if ($this->count < $this->dataLength) {
912 $row = $this->count % $this->blocks;
913 $col = $this->count / $this->blocks;
914 if ($col >= $this->rsblocks[0]['dataLength']) {
915 $row += $this->b1;
916 }
917 $ret = $this->rsblocks[$row]['data'][$col];
918 } elseif ($this->count < $this->dataLength + $this->eccLength) {
919 $row = ($this->count - $this->dataLength) % $this->blocks;
920 $col = ($this->count - $this->dataLength) / $this->blocks;
921 $ret = $this->rsblocks[$row]['ecc'][$col];
922 } else {
923 return 0;
924 }
925 $this->count++;
926 return $ret;
927 }
QRcode\$b1
$b1
Value b1.
Definition: qrcode.php:421
QRcode\$dataLength
$dataLength
Data length.
Definition: qrcode.php:409
QRcode\$blocks
$blocks
Blocks.
Definition: qrcode.php:391

References $b1, $blocks, $dataLength, $ret, and $row.

Referenced by encodeMask().

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◆ getDataLength()

QRcode::getDataLength (   $version,
  $level 
)
protected

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

Parameters
$version(int) version
$level(int) error correction level
Returns
int maximum size (bytes)

Definition at line 2284 of file qrcode.php.

2284 {
2285 return $this->capacity[$version][QRCAP_WORDS] - $this->capacity[$version][QRCAP_EC][$level];
2286 }
QRcode\$level
$level
Levels of error correction.
Definition: qrcode.php:309

References $level, and $version.

Referenced by appendPaddingBit(), and getEccSpec().

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◆ getECCLength()

QRcode::getECCLength (   $version,
  $level 
)
protected

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

Parameters
$version(int) version
$level(int) error correction level
Returns
int ECC size (bytes)

Definition at line 2294 of file qrcode.php.

2294 {
2295 return $this->capacity[$version][QRCAP_EC][$level];
2296 }

References $level, and $version.

Referenced by getEccSpec().

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◆ getEccSpec()

QRcode::getEccSpec (   $version,
  $level,
  $spec 
)
protected

Return an array of ECC specification.

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

Definition at line 2385 of file qrcode.php.

2385 {
2386 if (count($spec) < 5) {
2387 $spec = array(0, 0, 0, 0, 0);
2388 }
2389 $b1 = $this->eccTable[$version][$level][0];
2390 $b2 = $this->eccTable[$version][$level][1];
2391 $data = $this->getDataLength($version, $level);
2392 $ecc = $this->getECCLength($version, $level);
2393 if ($b2 == 0) {
2394 $spec[0] = $b1;
2395 $spec[1] = (int)($data / $b1);
2396 $spec[2] = (int)($ecc / $b1);
2397 $spec[3] = 0;
2398 $spec[4] = 0;
2399 } else {
2400 $spec[0] = $b1;
2401 $spec[1] = (int)($data / ($b1 + $b2));
2402 $spec[2] = (int)($ecc / ($b1 + $b2));
2403 $spec[3] = $b2;
2404 $spec[4] = $spec[1] + 1;
2405 }
2406 return $spec;
2407 }
QRcode\getECCLength
getECCLength($version, $level)
Return maximum error correction code length (bytes) for the version.
Definition: qrcode.php:2294

References $b1, $data, $level, $version, getDataLength(), and getECCLength().

Referenced by encodeMask().

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◆ getFormatInfo()

QRcode::getFormatInfo (   $mask,
  $level 
)
protected

Return BCH encoded format information pattern.

Parameters
$mask(array)
$level(int) error correction level
Returns
BCH encoded format information pattern

Definition at line 2492 of file qrcode.php.

2492 {
2493 if (($mask < 0) OR ($mask > 7)) {
2494 return 0;
2495 }
2496 if (($level < 0) OR ($level > 3)) {
2497 return 0;
2498 }
2499 return $this->formatInfo[$level][$mask];
2500 }

References $level, and $mask.

Referenced by writeFormatInformation().

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◆ getFrameAt()

QRcode::getFrameAt (   $at)
protected

Get frame value at specified position.

Parameters
$at(array) x,y position
Returns
value at specified position

Definition at line 795 of file qrcode.php.

795 {
796 return ord($this->frame[$at['y']][$at['x']]);
797 }

◆ getMinimumVersion()

QRcode::getMinimumVersion (   $size,
  $level 
)
protected

Return a version number that satisfies the input code length.

Parameters
$size(int) input code length (bytes)
$level(int) error correction level
Returns
int version number

Definition at line 2322 of file qrcode.php.

2322 {
2323 for ($i = 1; $i <= QRSPEC_VERSION_MAX; ++$i) {
2324 $words = ($this->capacity[$i][QRCAP_WORDS] - $this->capacity[$i][QRCAP_EC][$level]);
2325 if ($words >= $size) {
2326 return $i;
2327 }
2328 }
2329 // the size of input data is greater than QR capacity, try to lover the error correction mode
2330 return -1;
2331 }

References $level, and $size.

Referenced by convertData(), and estimateVersion().

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◆ getNextPosition()

QRcode::getNextPosition ( )
protected

Return the next frame position.

Returns
array of x,y coordinates

Definition at line 803 of file qrcode.php.

803 {
804 do {
805 if ($this->bit == -1) {
806 $this->bit = 0;
807 return array('x'=>$this->x, 'y'=>$this->y);
808 }
809 $x = $this->x;
810 $y = $this->y;
811 $w = $this->width;
812 if ($this->bit == 0) {
813 $x--;
814 $this->bit++;
815 } else {
816 $x++;
817 $y += $this->dir;
818 $this->bit--;
819 }
820 if ($this->dir < 0) {
821 if ($y < 0) {
822 $y = 0;
823 $x -= 2;
824 $this->dir = 1;
825 if ($x == 6) {
826 $x--;
827 $y = 9;
828 }
829 }
830 } else {
831 if ($y == $w) {
832 $y = $w - 1;
833 $x -= 2;
834 $this->dir = -1;
835 if ($x == 6) {
836 $x--;
837 $y -= 8;
838 }
839 }
840 }
841 if (($x < 0) OR ($y < 0)) {
842 return NULL;
843 }
844 $this->x = $x;
845 $this->y = $y;
846 } while(ord($this->frame[$y][$x]) & 0x80);
847 return array('x'=>$x, 'y'=>$y);
848 }
QRcode\$dir
$dir
Direction.
Definition: qrcode.php:365

References $dir, $w, $width, $x, and $y.

Referenced by encodeMask().

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◆ getRemainder()

QRcode::getRemainder (   $version)
protected

Return the numer of remainder bits.

Parameters
$version(int) version
Returns
int number of remainder bits

Definition at line 2312 of file qrcode.php.

2312 {
2313 return $this->capacity[$version][QRCAP_REMINDER];
2314 }

References $version.

Referenced by encodeMask().

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◆ getVersionPattern()

QRcode::getVersionPattern (   $version)
protected

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

Use lower 18 bits.

Parameters
$version(int) version
Returns
BCH encoded version information pattern

Definition at line 2479 of file qrcode.php.

2479 {
2480 if (($version < 7) OR ($version > QRSPEC_VERSION_MAX)) {
2481 return 0;
2482 }
2483 return $this->versionPattern[($version - 7)];
2484 }

References $version.

Referenced by createFrame().

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◆ getWidth()

QRcode::getWidth (   $version)
protected

Return the width of the symbol for the version.

Parameters
$version(int) version
Returns
int width

Definition at line 2303 of file qrcode.php.

2303 {
2304 return $this->capacity[$version][QRCAP_WIDTH];
2305 }

References $version.

Referenced by encodeMask().

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◆ identifyMode()

QRcode::identifyMode (   $pos)
protected

identifyMode

Parameters
$pos(int)
Returns
int mode

Definition at line 1287 of file qrcode.php.

1287 {
1288 if ($pos >= strlen($this->dataStr)) {
1289 return QR_MODE_NL;
1290 }
1291 $c = $this->dataStr[$pos];
1292 if ($this->isdigitat($this->dataStr, $pos)) {
1293 return QR_MODE_NM;
1294 } elseif ($this->isalnumat($this->dataStr, $pos)) {
1295 return QR_MODE_AN;
1296 } elseif ($this->hint == QR_MODE_KJ) {
1297 if ($pos+1 < strlen($this->dataStr)) {
1298 $d = $this->dataStr[$pos+1];
1299 $word = (ord($c) << 8) | ord($d);
1300 if (($word >= 0x8140 && $word <= 0x9ffc) OR ($word >= 0xe040 && $word <= 0xebbf)) {
1301 return QR_MODE_KJ;
1302 }
1303 }
1304 }
1305 return QR_MODE_8B;
1306 }

References $d, isalnumat(), and isdigitat().

Referenced by eat8(), eatKanji(), eatNum(), splitString(), and toUpper().

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◆ init()

QRcode::init (   $spec)
protected

Initialize code.

Parameters
$spec(array) array of ECC specification
Returns
0 in case of success, -1 in case of error

Definition at line 859 of file qrcode.php.

859 {
860 $dl = $this->rsDataCodes1($spec);
861 $el = $this->rsEccCodes1($spec);
862 $rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
863 $blockNo = 0;
864 $dataPos = 0;
865 $eccPos = 0;
866 $endfor = $this->rsBlockNum1($spec);
867 for ($i=0; $i < $endfor; ++$i) {
868 $ecc = array_slice($this->ecccode, $eccPos);
869 $this->rsblocks[$blockNo] = array();
870 $this->rsblocks[$blockNo]['dataLength'] = $dl;
871 $this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);
872 $this->rsblocks[$blockNo]['eccLength'] = $el;
873 $ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);
874 $this->rsblocks[$blockNo]['ecc'] = $ecc;
875 $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
876 $dataPos += $dl;
877 $eccPos += $el;
878 $blockNo++;
879 }
880 if ($this->rsBlockNum2($spec) == 0) {
881 return 0;
882 }
883 $dl = $this->rsDataCodes2($spec);
884 $el = $this->rsEccCodes2($spec);
885 $rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
886 if ($rs == NULL) {
887 return -1;
888 }
889 $endfor = $this->rsBlockNum2($spec);
890 for ($i=0; $i < $endfor; ++$i) {
891 $ecc = array_slice($this->ecccode, $eccPos);
892 $this->rsblocks[$blockNo] = array();
893 $this->rsblocks[$blockNo]['dataLength'] = $dl;
894 $this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);
895 $this->rsblocks[$blockNo]['eccLength'] = $el;
896 $ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);
897 $this->rsblocks[$blockNo]['ecc'] = $ecc;
898 $this->ecccode = array_merge(array_slice($this->ecccode, 0, $eccPos), $ecc);
899 $dataPos += $dl;
900 $eccPos += $el;
901 $blockNo++;
902 }
903 return 0;
904 }
QRcode\encode_rs_char
encode_rs_char($rs, $data, $parity)
Encode a Reed-Solomon codec and returns the parity array.
Definition: qrcode.php:2828
QRcode\rsBlockNum2
rsBlockNum2($spec)
Return block number 2.
Definition: qrcode.php:2649
QRcode\rsEccCodes2
rsEccCodes2($spec)
Return ecc codes 2.
Definition: qrcode.php:2667
QRcode\rsEccCodes1
rsEccCodes1($spec)
Return ecc codes 1.
Definition: qrcode.php:2640
QRcode\rsDataCodes2
rsDataCodes2($spec)
Return data codes 2.
Definition: qrcode.php:2658
QRcode\init_rs
init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
Initialize a Reed-Solomon codec and add it to existing rsitems.
Definition: qrcode.php:2703
QRcode\rsDataCodes1
rsDataCodes1($spec)
Return data codes 1.
Definition: qrcode.php:2631

References encode_rs_char(), init_rs(), rsBlockNum1(), rsBlockNum2(), rsDataCodes1(), rsDataCodes2(), rsEccCodes1(), and rsEccCodes2().

Referenced by encodeMask().

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◆ init_rs()

QRcode::init_rs (   $symsize,
  $gfpoly,
  $fcr,
  $prim,
  $nroots,
  $pad 
)
protected

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

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

Definition at line 2703 of file qrcode.php.

2703 {
2704 foreach ($this->rsitems as $rs) {
2705 if (($rs['pad'] != $pad) OR ($rs['nroots'] != $nroots) OR ($rs['mm'] != $symsize)
2706 OR ($rs['gfpoly'] != $gfpoly) OR ($rs['fcr'] != $fcr) OR ($rs['prim'] != $prim)) {
2707 continue;
2708 }
2709 return $rs;
2710 }
2711 $rs = $this->init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad);
2712 array_unshift($this->rsitems, $rs);
2713 return $rs;
2714 }
QRcode\init_rs_char
init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
Initialize a Reed-Solomon codec and returns an array of values.
Definition: qrcode.php:2744

References init_rs_char().

Referenced by init().

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◆ init_rs_char()

QRcode::init_rs_char (   $symsize,
  $gfpoly,
  $fcr,
  $prim,
  $nroots,
  $pad 
)
protected

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

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

Definition at line 2744 of file qrcode.php.

2744 {
2745 // Based on Reed solomon encoder by Phil Karn, KA9Q (GNU-LGPLv2)
2746 $rs = null;
2747 // Check parameter ranges
2748 if (($symsize < 0) OR ($symsize > 8)) {
2749 return $rs;
2750 }
2751 if (($fcr < 0) OR ($fcr >= (1<<$symsize))) {
2752 return $rs;
2753 }
2754 if (($prim <= 0) OR ($prim >= (1<<$symsize))) {
2755 return $rs;
2756 }
2757 if (($nroots < 0) OR ($nroots >= (1<<$symsize))) {
2758 return $rs;
2759 }
2760 if (($pad < 0) OR ($pad >= ((1<<$symsize) -1 - $nroots))) {
2761 return $rs;
2762 }
2763 $rs = array();
2764 $rs['mm'] = $symsize;
2765 $rs['nn'] = (1 << $symsize) - 1;
2766 $rs['pad'] = $pad;
2767 $rs['alpha_to'] = array_fill(0, ($rs['nn'] + 1), 0);
2768 $rs['index_of'] = array_fill(0, ($rs['nn'] + 1), 0);
2769 // PHP style macro replacement ;)
2770 $NN =& $rs['nn'];
2771 $A0 =& $NN;
2772 // Generate Galois field lookup tables
2773 $rs['index_of'][0] = $A0; // log(zero) = -inf
2774 $rs['alpha_to'][$A0] = 0; // alpha**-inf = 0
2775 $sr = 1;
2776 for ($i=0; $i<$rs['nn']; ++$i) {
2777 $rs['index_of'][$sr] = $i;
2778 $rs['alpha_to'][$i] = $sr;
2779 $sr <<= 1;
2780 if ($sr & (1 << $symsize)) {
2781 $sr ^= $gfpoly;
2782 }
2783 $sr &= $rs['nn'];
2784 }
2785 if ($sr != 1) {
2786 // field generator polynomial is not primitive!
2787 return NULL;
2788 }
2789 // Form RS code generator polynomial from its roots
2790 $rs['genpoly'] = array_fill(0, ($nroots + 1), 0);
2791 $rs['fcr'] = $fcr;
2792 $rs['prim'] = $prim;
2793 $rs['nroots'] = $nroots;
2794 $rs['gfpoly'] = $gfpoly;
2795 // Find prim-th root of 1, used in decoding
2796 for ($iprim=1; ($iprim % $prim) != 0; $iprim += $rs['nn']) {
2797 ; // intentional empty-body loop!
2798 }
2799 $rs['iprim'] = (int)($iprim / $prim);
2800 $rs['genpoly'][0] = 1;
2801 for ($i = 0,$root=$fcr*$prim; $i < $nroots; $i++, $root += $prim) {
2802 $rs['genpoly'][$i+1] = 1;
2803 // Multiply rs->genpoly[] by @**(root + x)
2804 for ($j = $i; $j > 0; --$j) {
2805 if ($rs['genpoly'][$j] != 0) {
2806 $rs['genpoly'][$j] = $rs['genpoly'][$j-1] ^ $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][$j]] + $root)];
2807 } else {
2808 $rs['genpoly'][$j] = $rs['genpoly'][$j-1];
2809 }
2810 }
2811 // rs->genpoly[0] can never be zero
2812 $rs['genpoly'][0] = $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][0]] + $root)];
2813 }
2814 // convert rs->genpoly[] to index form for quicker encoding
2815 for ($i = 0; $i <= $nroots; ++$i) {
2816 $rs['genpoly'][$i] = $rs['index_of'][$rs['genpoly'][$i]];
2817 }
2818 return $rs;
2819 }

References modnn().

Referenced by init_rs().

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◆ insertStructuredAppendHeader()

QRcode::insertStructuredAppendHeader (   $items,
  $size,
  $index,
  $parity 
)
protected

insertStructuredAppendHeader

Parameters
$items(array)
$size(int)
$index(int)
$parity(int)
Returns
array items

Definition at line 1712 of file qrcode.php.

1712 {
1713 if ($size > MAX_STRUCTURED_SYMBOLS) {
1714 return -1;
1715 }
1716 if (($index <= 0) OR ($index > MAX_STRUCTURED_SYMBOLS)) {
1717 return -1;
1718 }
1719 $buf = array($size, $index, $parity);
1720 $entry = $this->newInputItem(QR_MODE_ST, 3, buf);
1721 array_unshift($items, $entry);
1722 return $items;
1723 }

References $items, $size, and newInputItem().

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◆ isalnumat()

QRcode::isalnumat (   $str,
  $pos 
)
protected

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

Parameters
$str(string) string
$pos(int) characted position
Returns
boolean true of false

Definition at line 1275 of file qrcode.php.

1275 {
1276 if ($pos >= strlen($str)) {
1277 return false;
1278 }
1279 return ($this->lookAnTable(ord($str[$pos])) >= 0);
1280 }

References lookAnTable().

Referenced by eat8(), eatAn(), and identifyMode().

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◆ isdigitat()

QRcode::isdigitat (   $str,
  $pos 
)
protected

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

Parameters
$str(string) string
$pos(int) characted position
Returns
boolean true of false

Definition at line 1262 of file qrcode.php.

1262 {
1263 if ($pos >= strlen($str)) {
1264 return false;
1265 }
1266 return ((ord($str[$pos]) >= ord('0'))&&(ord($str[$pos]) <= ord('9')));
1267 }

Referenced by eat8(), eatAn(), eatNum(), and identifyMode().

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◆ lengthIndicator()

QRcode::lengthIndicator (   $mode,
  $version 
)
protected

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

Parameters
$mode(int) encoding mode
$version(int) version
Returns
int the size of the appropriate length indicator (bits).

Definition at line 2339 of file qrcode.php.

2339 {
2340 if ($mode == QR_MODE_ST) {
2341 return 0;
2342 }
2343 if ($version <= 9) {
2344 $l = 0;
2345 } elseif ($version <= 26) {
2346 $l = 1;
2347 } else {
2348 $l = 2;
2349 }
2350 return $this->lengthTableBits[$mode][$l];
2351 }

References $l, and $version.

Referenced by eat8(), eatAn(), eatNum(), encodeMode8(), encodeModeAn(), encodeModeKanji(), encodeModeNum(), estimateBitStreamSize(), and lengthOfCode().

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◆ lengthOfCode()

QRcode::lengthOfCode (   $mode,
  $version,
  $bits 
)
protected

lengthOfCode

Parameters
$mode(int)
$version(int)
$bits(int)
Returns
int size

Definition at line 1956 of file qrcode.php.

1956 {
1957 $payload = $bits - 4 - $this->lengthIndicator($mode, $version);
1958 switch($mode) {
1959 case QR_MODE_NM: {
1960 $chunks = (int)($payload / 10);
1961 $remain = $payload - $chunks * 10;
1962 $size = $chunks * 3;
1963 if ($remain >= 7) {
1964 $size += 2;
1965 } elseif ($remain >= 4) {
1966 $size += 1;
1967 }
1968 break;
1969 }
1970 case QR_MODE_AN: {
1971 $chunks = (int)($payload / 11);
1972 $remain = $payload - $chunks * 11;
1973 $size = $chunks * 2;
1974 if ($remain >= 6) {
1975 ++$size;
1976 }
1977 break;
1978 }
1979 case QR_MODE_8B: {
1980 $size = (int)($payload / 8);
1981 break;
1982 }
1983 case QR_MODE_KJ: {
1984 $size = (int)(($payload / 13) * 2);
1985 break;
1986 }
1987 case QR_MODE_ST: {
1988 $size = (int)($payload / 8);
1989 break;
1990 }
1991 default: {
1992 $size = 0;
1993 break;
1994 }
1995 }
1996 $maxsize = $this->maximumWords($mode, $version);
1997 if ($size < 0) {
1998 $size = 0;
1999 }
2000 if ($size > $maxsize) {
2001 $size = $maxsize;
2002 }
2003 return $size;
2004 }

References $size, $version, lengthIndicator(), and maximumWords().

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◆ lookAnTable()

QRcode::lookAnTable (   $c)
protected

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

Parameters
$c(int) character value
Returns
value

Definition at line 1762 of file qrcode.php.

1762 {
1763 return (($c > 127)?-1:$this->anTable[$c]);
1764 }

Referenced by checkModeAn(), encodeModeAn(), and isalnumat().

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◆ makeMask()

QRcode::makeMask (   $width,
  $frame,
  $maskNo,
  $level 
)
protected

makeMask

Parameters
$width(int)
$frame(array)
$maskNo(int)
$level(int)
Returns
array mask

Definition at line 1115 of file qrcode.php.

1115 {
1116 $masked = array_fill(0, $width, str_repeat("\0", $width));
1117 $this->makeMaskNo($maskNo, $width, $frame, $masked);
1118 $this->writeFormatInformation($width, $masked, $maskNo, $level);
1119 return $masked;
1120 }
QRcode\makeMaskNo
makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly=false)
makeMaskNo
Definition: qrcode.php:1088
QRcode\writeFormatInformation
writeFormatInformation($width, &$frame, $mask, $level)
Write Format Information on frame and returns the number of black bits.
Definition: qrcode.php:941

References $frame, $level, $width, makeMaskNo(), and writeFormatInformation().

Referenced by encodeMask().

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◆ makeMaskNo()

QRcode::makeMaskNo (   $maskNo,
  $width,
  $s,
&  $d,
  $maskGenOnly = false 
)
protected

makeMaskNo

Parameters
$maskNo(int)
$width(int)
$s(int)
$d(int)
$maskGenOnly(boolean)
Returns
int b

Definition at line 1088 of file qrcode.php.

1088 {
1089 $b = 0;
1090 $bitMask = array();
1091 $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);
1092 if ($maskGenOnly) {
1093 return;
1094 }
1095 $d = $s;
1096 for ($y=0; $y<$width; ++$y) {
1097 for ($x=0; $x<$width; ++$x) {
1098 if ($bitMask[$y][$x] == 1) {
1099 $d[$y][$x] = chr(ord($s[$y][$x]) ^ ((int)($bitMask[$y][$x])));
1100 }
1101 $b += (int)(ord($d[$y][$x]) & 1);
1102 }
1103 }
1104 return $b;
1105 }
QRcode\generateMaskNo
generateMaskNo($maskNo, $width, $frame)
Return bitmask.
Definition: qrcode.php:1064

References $d, $width, $x, $y, and generateMaskNo().

Referenced by makeMask(), and mask().

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◆ mask()

QRcode::mask (   $width,
  $frame,
  $level 
)
protected

mask

Parameters
$width(int)
$frame(array)
$level(int)
Returns
array best mask

Definition at line 1220 of file qrcode.php.

1220 {
1221 $minDemerit = PHP_INT_MAX;
1222 $bestMaskNum = 0;
1223 $bestMask = array();
1224 $checked_masks = array(0, 1, 2, 3, 4, 5, 6, 7);
1225 if (QR_FIND_FROM_RANDOM !== false) {
1226 $howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);
1227 for ($i = 0; $i < $howManuOut; ++$i) {
1228 $remPos = rand (0, count($checked_masks)-1);
1229 unset($checked_masks[$remPos]);
1230 $checked_masks = array_values($checked_masks);
1231 }
1232 }
1233 $bestMask = $frame;
1234 foreach ($checked_masks as $i) {
1235 $mask = array_fill(0, $width, str_repeat("\0", $width));
1236 $demerit = 0;
1237 $blacks = 0;
1238 $blacks = $this->makeMaskNo($i, $width, $frame, $mask);
1239 $blacks += $this->writeFormatInformation($width, $mask, $i, $level);
1240 $blacks = (int)(100 * $blacks / ($width * $width));
1241 $demerit = (int)((int)(abs($blacks - 50) / 5) * N4);
1242 $demerit += $this->evaluateSymbol($width, $mask);
1243 if ($demerit < $minDemerit) {
1244 $minDemerit = $demerit;
1245 $bestMask = $mask;
1246 $bestMaskNum = $i;
1247 }
1248 }
1249 return $bestMask;
1250 }
QRcode\evaluateSymbol
evaluateSymbol($width, $frame)
evaluateSymbol
Definition: qrcode.php:1158

References $frame, $level, $mask, $width, evaluateSymbol(), makeMaskNo(), and writeFormatInformation().

Referenced by encodeMask().

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◆ mask0()

QRcode::mask0 (   $x,
  $y 
)
protected

mask0

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 983 of file qrcode.php.

983 {
984 return ($x + $y) & 1;
985 }

References $x, and $y.

◆ mask1()

QRcode::mask1 (   $x,
  $y 
)
protected

mask1

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 993 of file qrcode.php.

993 {
994 return ($y & 1);
995 }

References $y.

◆ mask2()

QRcode::mask2 (   $x,
  $y 
)
protected

mask2

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 1003 of file qrcode.php.

1003 {
1004 return ($x % 3);
1005 }

References $x.

◆ mask3()

QRcode::mask3 (   $x,
  $y 
)
protected

mask3

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 1013 of file qrcode.php.

1013 {
1014 return ($x + $y) % 3;
1015 }

References $x, and $y.

◆ mask4()

QRcode::mask4 (   $x,
  $y 
)
protected

mask4

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 1023 of file qrcode.php.

1023 {
1024 return (((int)($y / 2)) + ((int)($x / 3))) & 1;
1025 }

References $x, and $y.

◆ mask5()

QRcode::mask5 (   $x,
  $y 
)
protected

mask5

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 1033 of file qrcode.php.

1033 {
1034 return (($x * $y) & 1) + ($x * $y) % 3;
1035 }

References $x, and $y.

◆ mask6()

QRcode::mask6 (   $x,
  $y 
)
protected

mask6

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 1043 of file qrcode.php.

1043 {
1044 return ((($x * $y) & 1) + ($x * $y) % 3) & 1;
1045 }

References $x, and $y.

◆ mask7()

QRcode::mask7 (   $x,
  $y 
)
protected

mask7

Parameters
$x(int) X position
$y(int) Y position
Returns
int mask

Definition at line 1053 of file qrcode.php.

1053 {
1054 return ((($x * $y) % 3) + (($x + $y) & 1)) & 1;
1055 }

References $x, and $y.

◆ maximumWords()

QRcode::maximumWords (   $mode,
  $version 
)
protected

Return the maximum length for the mode and version.

Parameters
$mode(int) encoding mode
$version(int) version
Returns
int the maximum length (bytes)

Definition at line 2359 of file qrcode.php.

2359 {
2360 if ($mode == QR_MODE_ST) {
2361 return 3;
2362 }
2363 if ($version <= 9) {
2364 $l = 0;
2365 } else if ($version <= 26) {
2366 $l = 1;
2367 } else {
2368 $l = 2;
2369 }
2370 $bits = $this->lengthTableBits[$mode][$l];
2371 $words = (1 << $bits) - 1;
2372 if ($mode == QR_MODE_KJ) {
2373 $words *= 2; // the number of bytes is required
2374 }
2375 return $words;
2376 }

References $l, and $version.

Referenced by encodeBitStream(), and lengthOfCode().

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◆ mergeBitStream()

QRcode::mergeBitStream (   $items)
protected

mergeBitStream

Parameters
$items(array) items
Returns
array bitstream

Definition at line 2088 of file qrcode.php.

2088 {
2089 $items = $this->convertData($items);
2090 if (!is_array($items)) {
2091 return null;
2092 }
2093 $bstream = array();
2094 foreach ($items as $item) {
2095 $bstream = $this->appendBitstream($bstream, $item['bstream']);
2096 }
2097 return $bstream;
2098 }
QRcode\convertData
convertData($items)
convertData
Definition: qrcode.php:2026

References $items, appendBitstream(), and convertData().

Referenced by getBitStream().

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◆ modnn()

QRcode::modnn (   $rs,
  $x 
)
protected

modnn

Parameters
$rs(array) RS values
$x(int) X position
Returns
int X osition

Definition at line 2726 of file qrcode.php.

2726 {
2727 while ($x >= $rs['nn']) {
2728 $x -= $rs['nn'];
2729 $x = ($x >> $rs['mm']) + ($x & $rs['nn']);
2730 }
2731 return $x;
2732 }

References $x.

Referenced by encode_rs_char(), and init_rs_char().

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◆ newFrame()

QRcode::newFrame (   $version)
protected

Set new frame for the specified version.

Parameters
$version(int) version
Returns
Array of unsigned char.

Definition at line 2595 of file qrcode.php.

2595 {
2596 if (($version < 1) OR ($version > QRSPEC_VERSION_MAX)) {
2597 return NULL;
2598 }
2599 if (!isset($this->frames[$version])) {
2600 $this->frames[$version] = $this->createFrame($version);
2601 }
2602 if (is_null($this->frames[$version])) {
2603 return NULL;
2604 }
2605 return $this->frames[$version];
2606 }
QRcode\createFrame
createFrame($version)
Return a copy of initialized frame.
Definition: qrcode.php:2530

References $version, and createFrame().

Referenced by encodeMask().

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◆ newFromBytes()

QRcode::newFromBytes (   $size,
  $data 
)
protected

Return new bitstream from bytes.

Parameters
$size(int) size
$data(array) bytes
Returns
array bitstream

Definition at line 2159 of file qrcode.php.

2159 {
2160 $bstream = $this->allocate($size * 8);
2161 $p=0;
2162 for ($i=0; $i<$size; ++$i) {
2163 $mask = 0x80;
2164 for ($j=0; $j<8; ++$j) {
2165 if ($data[$i] & $mask) {
2166 $bstream[$p] = 1;
2167 } else {
2168 $bstream[$p] = 0;
2169 }
2170 $p++;
2171 $mask = $mask >> 1;
2172 }
2173 }
2174 return $bstream;
2175 }
QRcode\allocate
allocate($setLength)
Return an array with zeros.
Definition: qrcode.php:2129

References $data, $mask, $size, and allocate().

Referenced by appendBytes().

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◆ newFromNum()

QRcode::newFromNum (   $bits,
  $num 
)
protected

Return new bitstream from number.

Parameters
$bits(int) number of bits
$num(int) number
Returns
array bitstream

Definition at line 2139 of file qrcode.php.

2139 {
2140 $bstream = $this->allocate($bits);
2141 $mask = 1 << ($bits - 1);
2142 for ($i=0; $i<$bits; ++$i) {
2143 if ($num & $mask) {
2144 $bstream[$i] = 1;
2145 } else {
2146 $bstream[$i] = 0;
2147 }
2148 $mask = $mask >> 1;
2149 }
2150 return $bstream;
2151 }

References $mask, and allocate().

Referenced by appendNum().

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◆ newInputItem()

QRcode::newInputItem (   $mode,
  $size,
  $data,
  $bstream = null 
)
protected

newInputItem

Parameters
$mode(int)
$size(int)
$data(array)
$bstream(array)
Returns
array input item

Definition at line 1513 of file qrcode.php.

1513 {
1514 $setData = array_slice($data, 0, $size);
1515 if (count($setData) < $size) {
1516 $setData = array_merge($setData, array_fill(0, ($size - count($setData)), 0));
1517 }
1518 if (!$this->check($mode, $size, $setData)) {
1519 return NULL;
1520 }
1521 $inputitem = array();
1522 $inputitem['mode'] = $mode;
1523 $inputitem['size'] = $size;
1524 $inputitem['data'] = $setData;
1525 $inputitem['bstream'] = $bstream;
1526 return $inputitem;
1527 }
QRcode\check
check($mode, $size, $data)
Validate the input data.
Definition: qrcode.php:1859

References $data, $size, and check().

Referenced by appendNewInputItem(), encodeBitStream(), and insertStructuredAppendHeader().

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◆ putAlignmentMarker()

QRcode::putAlignmentMarker (   $frame,
  $ox,
  $oy 
)
protected

Put an alignment marker.

Parameters
$frame(array) frame
$ox(int) X center coordinate of the pattern
$oy(int) Y center coordinate of the pattern
Returns
array frame

Definition at line 2416 of file qrcode.php.

2416 {
2417 $finder = array(
2418 "\xa1\xa1\xa1\xa1\xa1",
2419 "\xa1\xa0\xa0\xa0\xa1",
2420 "\xa1\xa0\xa1\xa0\xa1",
2421 "\xa1\xa0\xa0\xa0\xa1",
2422 "\xa1\xa1\xa1\xa1\xa1"
2423 );
2424 $yStart = $oy - 2;
2425 $xStart = $ox - 2;
2426 for ($y=0; $y < 5; $y++) {
2427 $frame = $this->qrstrset($frame, $xStart, $yStart+$y, $finder[$y]);
2428 }
2429 return $frame;
2430 }

References $frame, $y, and qrstrset().

Referenced by putAlignmentPattern().

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◆ putAlignmentPattern()

QRcode::putAlignmentPattern (   $version,
  $frame,
  $width 
)
protected

Put an alignment pattern.

Parameters
$version(int) version
$frame(array) frame
$width(int) width
Returns
array frame

Definition at line 2439 of file qrcode.php.

2439 {
2440 if ($version < 2) {
2441 return $frame;
2442 }
2443 $d = $this->alignmentPattern[$version][1] - $this->alignmentPattern[$version][0];
2444 if ($d < 0) {
2445 $w = 2;
2446 } else {
2447 $w = (int)(($width - $this->alignmentPattern[$version][0]) / $d + 2);
2448 }
2449 if ($w * $w - 3 == 1) {
2450 $x = $this->alignmentPattern[$version][0];
2451 $y = $this->alignmentPattern[$version][0];
2452 $frame = $this->putAlignmentMarker($frame, $x, $y);
2453 return $frame;
2454 }
2455 $cx = $this->alignmentPattern[$version][0];
2456 $wo = $w - 1;
2457 for ($x=1; $x < $wo; ++$x) {
2458 $frame = $this->putAlignmentMarker($frame, 6, $cx);
2459 $frame = $this->putAlignmentMarker($frame, $cx, 6);
2460 $cx += $d;
2461 }
2462 $cy = $this->alignmentPattern[$version][0];
2463 for ($y=0; $y < $wo; ++$y) {
2464 $cx = $this->alignmentPattern[$version][0];
2465 for ($x=0; $x < $wo; ++$x) {
2466 $frame = $this->putAlignmentMarker($frame, $cx, $cy);
2467 $cx += $d;
2468 }
2469 $cy += $d;
2470 }
2471 return $frame;
2472 }
QRcode\putAlignmentMarker
putAlignmentMarker($frame, $ox, $oy)
Put an alignment marker.
Definition: qrcode.php:2416

References $d, $frame, $version, $w, $width, $x, $y, and putAlignmentMarker().

Referenced by createFrame().

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◆ putFinderPattern()

QRcode::putFinderPattern (   $frame,
  $ox,
  $oy 
)
protected

Put a finder pattern.

Parameters
$frame(array) frame
$ox(int) X center coordinate of the pattern
$oy(int) Y center coordinate of the pattern
Returns
array frame

Definition at line 2509 of file qrcode.php.

2509 {
2510 $finder = array(
2511 "\xc1\xc1\xc1\xc1\xc1\xc1\xc1",
2512 "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
2513 "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
2514 "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
2515 "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
2516 "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
2517 "\xc1\xc1\xc1\xc1\xc1\xc1\xc1"
2518 );
2519 for ($y=0; $y < 7; $y++) {
2520 $frame = $this->qrstrset($frame, $ox, ($oy + $y), $finder[$y]);
2521 }
2522 return $frame;
2523 }

References $frame, $y, and qrstrset().

Referenced by createFrame().

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◆ qrstrset()

QRcode::qrstrset (   $srctab,
  $x,
  $y,
  $repl,
  $replLen = false 
)
protected

Replace a value on the array at the specified position.

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

Definition at line 2273 of file qrcode.php.

2273 {
2274 $srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
2275 return $srctab;
2276 }

References $x, and $y.

Referenced by createFrame(), putAlignmentMarker(), and putFinderPattern().

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◆ rsBlockNum()

QRcode::rsBlockNum (   $spec)
protected

Return block number 0.

Parameters
$spec(array)
Returns
int value

Definition at line 2613 of file qrcode.php.

2613 {
2614 return ($spec[0] + $spec[3]);
2615 }

Referenced by encodeMask().

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◆ rsBlockNum1()

QRcode::rsBlockNum1 (   $spec)
protected

Return block number 1.

Parameters
$spec(array)
Returns
int value

Definition at line 2622 of file qrcode.php.

2622 {
2623 return $spec[0];
2624 }

Referenced by encodeMask(), and init().

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◆ rsBlockNum2()

QRcode::rsBlockNum2 (   $spec)
protected

Return block number 2.

Parameters
$spec(array)
Returns
int value

Definition at line 2649 of file qrcode.php.

2649 {
2650 return $spec[3];
2651 }

Referenced by init().

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◆ rsDataCodes1()

QRcode::rsDataCodes1 (   $spec)
protected

Return data codes 1.

Parameters
$spec(array)
Returns
int value

Definition at line 2631 of file qrcode.php.

2631 {
2632 return $spec[1];
2633 }

Referenced by init().

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◆ rsDataCodes2()

QRcode::rsDataCodes2 (   $spec)
protected

Return data codes 2.

Parameters
$spec(array)
Returns
int value

Definition at line 2658 of file qrcode.php.

2658 {
2659 return $spec[4];
2660 }

Referenced by init().

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◆ rsDataLength()

QRcode::rsDataLength (   $spec)
protected

Return data length.

Parameters
$spec(array)
Returns
int value

Definition at line 2676 of file qrcode.php.

2676 {
2677 return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);
2678 }

Referenced by encodeMask().

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◆ rsEccCodes1()

QRcode::rsEccCodes1 (   $spec)
protected

Return ecc codes 1.

Parameters
$spec(array)
Returns
int value

Definition at line 2640 of file qrcode.php.

2640 {
2641 return $spec[2];
2642 }

Referenced by init().

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◆ rsEccCodes2()

QRcode::rsEccCodes2 (   $spec)
protected

Return ecc codes 2.

Parameters
$spec(array)
Returns
int value

Definition at line 2667 of file qrcode.php.

2667 {
2668 return $spec[2];
2669 }

Referenced by init().

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◆ rsEccLength()

QRcode::rsEccLength (   $spec)
protected

Return ecc length.

Parameters
$spec(array)
Returns
int value

Definition at line 2685 of file qrcode.php.

2685 {
2686 return ($spec[0] + $spec[3]) * $spec[2];
2687 }

Referenced by encodeMask().

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◆ setFrameAt()

QRcode::setFrameAt (   $at,
  $val 
)
protected

Set frame value at specified position.

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

Definition at line 786 of file qrcode.php.

786 {
787 $this->frame[$at['y']][$at['x']] = chr($val);
788 }

Referenced by encodeMask().

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◆ splitString()

QRcode::splitString ( )
protected

splitString

Returns
(int)

Definition at line 1445 of file qrcode.php.

1445 {
1446 while (strlen($this->dataStr) > 0) {
1447 $mode = $this->identifyMode(0);
1448 switch ($mode) {
1449 case QR_MODE_NM: {
1450 $length = $this->eatNum();
1451 break;
1452 }
1453 case QR_MODE_AN: {
1454 $length = $this->eatAn();
1455 break;
1456 }
1457 case QR_MODE_KJ: {
1458 if ($hint == QR_MODE_KJ) {
1459 $length = $this->eatKanji();
1460 } else {
1461 $length = $this->eat8();
1462 }
1463 break;
1464 }
1465 default: {
1466 $length = $this->eat8();
1467 break;
1468 }
1469 }
1470 if ($length == 0) {
1471 return 0;
1472 }
1473 if ($length < 0) {
1474 return -1;
1475 }
1476 $this->dataStr = substr($this->dataStr, $length);
1477 }
1478 return 0;
1479 }
QRcode\eatKanji
eatKanji()
eatKanji
Definition: qrcode.php:1383
QRcode\eatNum
eatNum()
eatNum
Definition: qrcode.php:1312
QRcode\$hint
$hint
Encoding mode.
Definition: qrcode.php:315

References $hint, eat8(), eatAn(), eatKanji(), eatNum(), and identifyMode().

Referenced by encodeString().

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◆ toUpper()

QRcode::toUpper ( )
protected

toUpper

Definition at line 1484 of file qrcode.php.

1484 {
1485 $stringLen = strlen($this->dataStr);
1486 $p = 0;
1487 while ($p < $stringLen) {
1488 $mode = $this->identifyMode(substr($this->dataStr, $p), $this->hint);
1489 if ($mode == QR_MODE_KJ) {
1490 $p += 2;
1491 } else {
1492 if ((ord($this->dataStr[$p]) >= ord('a')) AND (ord($this->dataStr[$p]) <= ord('z'))) {
1493 $this->dataStr[$p] = chr(ord($this->dataStr[$p]) - 32);
1494 }
1495 $p++;
1496 }
1497 }
1498 return $this->dataStr;
1499 }
QRcode\$dataStr
$dataStr
Input data string.
Definition: qrcode.php:437

References $dataStr, and identifyMode().

Referenced by encodeString().

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◆ writeFormatInformation()

QRcode::writeFormatInformation (   $width,
&  $frame,
  $mask,
  $level 
)
protected

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

Parameters
$width(int) frame width
$frame(array) frame
$mask(array) masking mode
$level(int) error correction level
Returns
int blacks

Definition at line 941 of file qrcode.php.

941 {
942 $blacks = 0;
943 $format = $this->getFormatInfo($mask, $level);
944 for ($i=0; $i<8; ++$i) {
945 if ($format & 1) {
946 $blacks += 2;
947 $v = 0x85;
948 } else {
949 $v = 0x84;
950 }
951 $frame[8][$width - 1 - $i] = chr($v);
952 if ($i < 6) {
953 $frame[$i][8] = chr($v);
954 } else {
955 $frame[$i + 1][8] = chr($v);
956 }
957 $format = $format >> 1;
958 }
959 for ($i=0; $i<7; ++$i) {
960 if ($format & 1) {
961 $blacks += 2;
962 $v = 0x85;
963 } else {
964 $v = 0x84;
965 }
966 $frame[$width - 7 + $i][8] = chr($v);
967 if ($i == 0) {
968 $frame[8][7] = chr($v);
969 } else {
970 $frame[8][6 - $i] = chr($v);
971 }
972 $format = $format >> 1;
973 }
974 return $blacks;
975 }
QRcode\getFormatInfo
getFormatInfo($mask, $level)
Return BCH encoded format information pattern.
Definition: qrcode.php:2492

References $frame, $level, $mask, $width, and getFormatInfo().

Referenced by makeMask(), and mask().

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Field Documentation

◆ $alignmentPattern

QRcode::$alignmentPattern
protected
Initial value:
= array(
array( 0, 0),
array( 0, 0), array(18, 0), array(22, 0), array(26, 0), array(30, 0),
array(34, 0), array(22, 38), array(24, 42), array(26, 46), array(28, 50),
array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48),
array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62),
array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58),
array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52),
array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54),
array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58)
)

Array Positions of alignment patterns.

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

Definition at line 589 of file qrcode.php.

◆ $anTable

QRcode::$anTable
protected
Initial value:
= 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
)

Alphabet-numeric convesion table.

Definition at line 463 of file qrcode.php.

◆ $b1

QRcode::$b1
protected

Value b1.

Definition at line 421 of file qrcode.php.

Referenced by getCode(), and getEccSpec().

◆ $barcode_array

QRcode::$barcode_array = array()
protected

Barcode array to be returned which is readable by TCPDF.

Definition at line 297 of file qrcode.php.

Referenced by __construct(), and getBarcodeArray().

◆ $bit

QRcode::$bit
protected

Single bit value.

Definition at line 371 of file qrcode.php.

Referenced by encodeMask().

◆ $blocks

QRcode::$blocks
protected

Blocks.

Definition at line 391 of file qrcode.php.

Referenced by getCode().

◆ $capacity

QRcode::$capacity
protected

Array Table of the capacity of symbols.

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

Definition at line 479 of file qrcode.php.

◆ $casesensitive

QRcode::$casesensitive = true
protected

Boolean flag, if true the input string will be converted to uppercase.

Definition at line 321 of file qrcode.php.

◆ $count

QRcode::$count
protected

Counter.

Definition at line 403 of file qrcode.php.

◆ $data

QRcode::$data
protected

Mask data.

Definition at line 333 of file qrcode.php.

Referenced by appendBytes(), appendNewInputItem(), bitstreamToByte(), check(), checkModeAn(), checkModeKanji(), checkModeNum(), encode_rs_char(), getEccSpec(), newFromBytes(), and newInputItem().

◆ $datacode

QRcode::$datacode = array()
protected

Data code.

Definition at line 379 of file qrcode.php.

◆ $dataLength

QRcode::$dataLength
protected

Data length.

Definition at line 409 of file qrcode.php.

Referenced by getCode().

◆ $dataStr

QRcode::$dataStr = ''
protected

Input data string.

Definition at line 437 of file qrcode.php.

Referenced by toUpper().

◆ $dir

QRcode::$dir
protected

Direction.

Definition at line 365 of file qrcode.php.

Referenced by getNextPosition().

◆ $ecccode

QRcode::$ecccode = array()
protected

Error correction code.

Definition at line 385 of file qrcode.php.

◆ $eccLength

QRcode::$eccLength
protected

Error correction length.

Definition at line 415 of file qrcode.php.

Referenced by encodeMask().

◆ $eccTable

QRcode::$eccTable
protected

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

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

Definition at line 539 of file qrcode.php.

◆ $formatInfo

QRcode::$formatInfo
protected
Initial value:
= 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)
)

Array Format information.

Definition at line 619 of file qrcode.php.

◆ $frame

QRcode::$frame
protected

Frame.

Definition at line 347 of file qrcode.php.

Referenced by binarize(), createFrame(), evaluateSymbol(), generateMaskNo(), makeMask(), mask(), putAlignmentMarker(), putAlignmentPattern(), putFinderPattern(), and writeFormatInformation().

◆ $frames

QRcode::$frames = array()
protected

Array of frames.

Definition at line 457 of file qrcode.php.

◆ $hint

QRcode::$hint = QR_MODE_8B
protected

Encoding mode.

Definition at line 315 of file qrcode.php.

Referenced by splitString().

◆ $items

QRcode::$items
protected

Input items.

Definition at line 443 of file qrcode.php.

Referenced by appendNewInputItem(), calcParity(), convertData(), createBitStream(), estimateBitStreamSize(), estimateVersion(), getBitStream(), getByteStream(), insertStructuredAppendHeader(), and mergeBitStream().

◆ $lengthTableBits

QRcode::$lengthTableBits
protected
Initial value:
= array(
array(10, 12, 14),
array( 9, 11, 13),
array( 8, 16, 16),
array( 8, 10, 12)
)

Array Length indicator.

Definition at line 527 of file qrcode.php.

◆ $level

QRcode::$level = QR_ECLEVEL_L
protected

Levels of error correction.

See definitions for possible values.

Definition at line 309 of file qrcode.php.

Referenced by getDataLength(), getECCLength(), getEccSpec(), getFormatInfo(), getMinimumVersion(), makeMask(), mask(), and writeFormatInformation().

◆ $rsblocks

QRcode::$rsblocks = array()
protected

Reed-Solomon blocks.

Definition at line 397 of file qrcode.php.

◆ $rsitems

QRcode::$rsitems = array()
protected

Reed-Solomon items.

Definition at line 451 of file qrcode.php.

◆ $runLength

QRcode::$runLength = array()
protected

Run length.

Definition at line 429 of file qrcode.php.

◆ $structured

QRcode::$structured = 0
protected

Structured QR code (not supported yet).

Definition at line 327 of file qrcode.php.

◆ $version

QRcode::$version = 0
protected

QR code version.

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

Definition at line 303 of file qrcode.php.

Referenced by createFrame(), encodeBitStream(), encodeMode8(), encodeModeAn(), encodeModeKanji(), encodeModeNum(), estimateBitStreamSize(), estimateVersion(), getDataLength(), getECCLength(), getEccSpec(), getRemainder(), getVersionPattern(), getWidth(), lengthIndicator(), lengthOfCode(), maximumWords(), newFrame(), and putAlignmentPattern().

◆ $versionPattern

QRcode::$versionPattern
protected
Initial value:
= 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
)

Array Version information pattern (BCH coded).

See Table 1 in Appendix D (pp.68) of JIS X0510:2004. size: [QRSPEC_VERSION_MAX - 6]

Definition at line 607 of file qrcode.php.

◆ $width

QRcode::$width
protected

Width.

Definition at line 341 of file qrcode.php.

Referenced by createFrame(), evaluateSymbol(), generateMaskNo(), getNextPosition(), makeMask(), makeMaskNo(), mask(), putAlignmentPattern(), and writeFormatInformation().

◆ $x

QRcode::$x
protected

X position of bit.

Definition at line 353 of file qrcode.php.

Referenced by createFrame(), evaluateSymbol(), generateMaskNo(), getNextPosition(), makeMaskNo(), mask0(), mask2(), mask3(), mask4(), mask5(), mask6(), mask7(), modnn(), putAlignmentPattern(), and qrstrset().

◆ $y

QRcode::$y
protected

Y position of bit.

Definition at line 359 of file qrcode.php.

Referenced by createFrame(), evaluateSymbol(), generateMaskNo(), getNextPosition(), makeMaskNo(), mask0(), mask1(), mask3(), mask4(), mask5(), mask6(), mask7(), putAlignmentMarker(), putAlignmentPattern(), putFinderPattern(), and qrstrset().

The documentation for this class was generated from the following file: