protected function barcode_code93($code)
{
$chr[48] = '131112';
// 0
$chr[49] = '111213';
// 1
$chr[50] = '111312';
// 2
$chr[51] = '111411';
// 3
$chr[52] = '121113';
// 4
$chr[53] = '121212';
// 5
$chr[54] = '121311';
// 6
$chr[55] = '111114';
// 7
$chr[56] = '131211';
// 8
$chr[57] = '141111';
// 9
$chr[65] = '211113';
// A
$chr[66] = '211212';
// B
$chr[67] = '211311';
// C
$chr[68] = '221112';
// D
$chr[69] = '221211';
// E
$chr[70] = '231111';
// F
$chr[71] = '112113';
// G
$chr[72] = '112212';
// H
$chr[73] = '112311';
// I
$chr[74] = '122112';
// J
$chr[75] = '132111';
// K
$chr[76] = '111123';
// L
$chr[77] = '111222';
// M
$chr[78] = '111321';
// N
$chr[79] = '121122';
// O
$chr[80] = '131121';
// P
$chr[81] = '212112';
// Q
$chr[82] = '212211';
// R
$chr[83] = '211122';
// S
$chr[84] = '211221';
// T
$chr[85] = '221121';
// U
$chr[86] = '222111';
// V
$chr[87] = '112122';
// W
$chr[88] = '112221';
// X
$chr[89] = '122121';
// Y
$chr[90] = '123111';
// Z
$chr[45] = '121131';
// -
$chr[46] = '311112';
// .
$chr[32] = '311211';
//
$chr[36] = '321111';
// $
$chr[47] = '112131';
// /
$chr[43] = '113121';
// +
$chr[37] = '211131';
// %
$chr[128] = '121221';
// ($)
$chr[129] = '311121';
// (/)
$chr[130] = '122211';
// (+)
$chr[131] = '312111';
// (%)
$chr[42] = '111141';
// start-stop
$code = strtoupper($code);
$encode = array(chr(0) => chr(131) . 'U', chr(1) => chr(128) . 'A', chr(2) => chr(128) . 'B', chr(3) => chr(128) . 'C', chr(4) => chr(128) . 'D', chr(5) => chr(128) . 'E', chr(6) => chr(128) . 'F', chr(7) => chr(128) . 'G', chr(8) => chr(128) . 'H', chr(9) => chr(128) . 'I', chr(10) => chr(128) . 'J', chr(11) => '£K', chr(12) => chr(128) . 'L', chr(13) => chr(128) . 'M', chr(14) => chr(128) . 'N', chr(15) => chr(128) . 'O', chr(16) => chr(128) . 'P', chr(17) => chr(128) . 'Q', chr(18) => chr(128) . 'R', chr(19) => chr(128) . 'S', chr(20) => chr(128) . 'T', chr(21) => chr(128) . 'U', chr(22) => chr(128) . 'V', chr(23) => chr(128) . 'W', chr(24) => chr(128) . 'X', chr(25) => chr(128) . 'Y', chr(26) => chr(128) . 'Z', chr(27) => chr(131) . 'A', chr(28) => chr(131) . 'B', chr(29) => chr(131) . 'C', chr(30) => chr(131) . 'D', chr(31) => chr(131) . 'E', chr(32) => ' ', chr(33) => chr(129) . 'A', chr(34) => chr(129) . 'B', chr(35) => chr(129) . 'C', chr(36) => chr(129) . 'D', chr(37) => chr(129) . 'E', chr(38) => chr(129) . 'F', chr(39) => chr(129) . 'G', chr(40) => chr(129) . 'H', chr(41) => chr(129) . 'I', chr(42) => chr(129) . 'J', chr(43) => chr(129) . 'K', chr(44) => chr(129) . 'L', chr(45) => '-', chr(46) => '.', chr(47) => chr(129) . 'O', chr(48) => '0', chr(49) => '1', chr(50) => '2', chr(51) => '3', chr(52) => '4', chr(53) => '5', chr(54) => '6', chr(55) => '7', chr(56) => '8', chr(57) => '9', chr(58) => chr(129) . 'Z', chr(59) => chr(131) . 'F', chr(60) => chr(131) . 'G', chr(61) => chr(131) . 'H', chr(62) => chr(131) . 'I', chr(63) => chr(131) . 'J', chr(64) => chr(131) . 'V', chr(65) => 'A', chr(66) => 'B', chr(67) => 'C', chr(68) => 'D', chr(69) => 'E', chr(70) => 'F', chr(71) => 'G', chr(72) => 'H', chr(73) => 'I', chr(74) => 'J', chr(75) => 'K', chr(76) => 'L', chr(77) => 'M', chr(78) => 'N', chr(79) => 'O', chr(80) => 'P', chr(81) => 'Q', chr(82) => 'R', chr(83) => 'S', chr(84) => 'T', chr(85) => 'U', chr(86) => 'V', chr(87) => 'W', chr(88) => 'X', chr(89) => 'Y', chr(90) => 'Z', chr(91) => chr(131) . 'K', chr(92) => chr(131) . 'L', chr(93) => chr(131) . 'M', chr(94) => chr(131) . 'N', chr(95) => chr(131) . 'O', chr(96) => chr(131) . 'W', chr(97) => chr(130) . 'A', chr(98) => chr(130) . 'B', chr(99) => chr(130) . 'C', chr(100) => chr(130) . 'D', chr(101) => chr(130) . 'E', chr(102) => chr(130) . 'F', chr(103) => chr(130) . 'G', chr(104) => chr(130) . 'H', chr(105) => chr(130) . 'I', chr(106) => chr(130) . 'J', chr(107) => chr(130) . 'K', chr(108) => chr(130) . 'L', chr(109) => chr(130) . 'M', chr(110) => chr(130) . 'N', chr(111) => chr(130) . 'O', chr(112) => chr(130) . 'P', chr(113) => chr(130) . 'Q', chr(114) => chr(130) . 'R', chr(115) => chr(130) . 'S', chr(116) => chr(130) . 'T', chr(117) => chr(130) . 'U', chr(118) => chr(130) . 'V', chr(119) => chr(130) . 'W', chr(120) => chr(130) . 'X', chr(121) => chr(130) . 'Y', chr(122) => chr(130) . 'Z', chr(123) => chr(131) . 'P', chr(124) => chr(131) . 'Q', chr(125) => chr(131) . 'R', chr(126) => chr(131) . 'S', chr(127) => chr(131) . 'T');
$code_ext = '';
$clen = strlen($code);
for ($i = 0; $i < $clen; ++$i) {
if (ord($code[$i]) > 127) {
return false;
}
$code_ext .= $encode[$code[$i]];
}
// checksum
$code_ext .= $this->checksum_code93($code_ext);
// add start and stop codes
$code = '*' . $code_ext . '*';
$bararray = array('code' => $code, 'maxw' => 0, 'maxh' => 1, 'bcode' => array());
$k = 0;
$clen = strlen($code);
for ($i = 0; $i < $clen; ++$i) {
$char = ord($code[$i]);
if (!isset($chr[$char])) {
// invalid character
return false;
}
for ($j = 0; $j < 6; ++$j) {
if ($j % 2 == 0) {
$t = true;
// bar
} else {
$t = false;
// space
}
$w = $chr[$char][$j];
$bararray['bcode'][$k] = array('t' => $t, 'w' => $w, 'h' => 1, 'p' => 0);
$bararray['maxw'] += $w;
++$k;
}
}
$bararray['bcode'][$k] = array('t' => true, 'w' => 1, 'h' => 1, 'p' => 0);
$bararray['maxw'] += 1;
++$k;
return $bararray;
}
