public static function lengthOfCode($mode, $version, $bits) { $payload = $bits - 4 - QRspec::lengthIndicator($mode, $version); switch ($mode) { case QR_MODE_NUM: $chunks = (int) ($payload / 10); $remain = $payload - $chunks * 10; $size = $chunks * 3; if ($remain >= 7) { $size += 2; } else { if ($remain >= 4) { $size += 1; } } break; case QR_MODE_AN: $chunks = (int) ($payload / 11); $remain = $payload - $chunks * 11; $size = $chunks * 2; if ($remain >= 6) { $size++; } break; case QR_MODE_8: $size = (int) ($payload / 8); break; case QR_MODE_KANJI: $size = (int) ($payload / 13 * 2); break; case QR_MODE_STRUCTURE: $size = (int) ($payload / 8); break; default: $size = 0; break; } $maxsize = QRspec::maximumWords($mode, $version); if ($size < 0) { $size = 0; } if ($size > $maxsize) { $size = $maxsize; } return $size; }
public function encodeBitStream($version) { try { unset($this->bstream); $words = QRspec::maximumWords($this->mode, $version); if ($this->size > $words) { $st1 = new QRinputitem($this->mode, $words, $this->data); $st2 = new QRinputitem($this->mode, $this->size - $words, array_slice($this->data, $words)); $st1->encodeBitStream($version); $st2->encodeBitStream($version); $this->bstream = new QRbitstream(); $this->bstream->append($st1->bstream); $this->bstream->append($st2->bstream); unset($st1); unset($st2); } else { $ret = 0; switch ($this->mode) { case QR_MODE_NUM: $ret = $this->encodeModeNum($version); break; case QR_MODE_AN: $ret = $this->encodeModeAn($version); break; case QR_MODE_8: $ret = $this->encodeMode8($version); break; case QR_MODE_KANJI: $ret = $this->encodeModeKanji($version); break; case QR_MODE_STRUCTURE: $ret = $this->encodeModeStructure(); break; default: break; } if ($ret < 0) { return -1; } } return $this->bstream->size(); } catch (Exception $e) { return -1; } }