PHP Barcode Code 128 Type A

code128typea.php

<?php

$map = array(
  ' ' => '0',
  '!' => '1',
  '"' => '2',
  '#' => '3',
  '$' => '4',
  '%' => '5',
  '&' => '6',
  '\'' => '7',
  '(' => '8',
  ')' => '9',
  '*' => '10',
  '+' => '11',
  ',' => '12',
  '-' => '13',
  '.' => '14',
  '/' => '15',
  '0' => '16',
  '1' => '17',
  '2' => '18',
  '3' => '19',
  '4' => '20',
  '5' => '21',
  '6' => '22',
  '7' => '23',
  '8' => '24',
  '9' => '25',
  ':' => '26',
  ';' => '27',
  '<' => '28',
  '=' => '29',
  '>' => '30',
  '?' => '31',
  '@' => '32',
  'A' => '33',
  'B' => '34',
  'C' => '35',
  'D' => '36',
  'E' => '37',
  'F' => '38',
  'G' => '39',
  'H' => '40',
  'I' => '41',
  'J' => '42',
  'K' => '43',
  'L' => '44',
  'M' => '45',
  'N' => '46',
  'O' => '47',
  'P' => '48',
  'Q' => '49',
  'R' => '50',
  'S' => '51',
  'T' => '52',
  'U' => '53',
  'V' => '54',
  'W' => '55',
  'X' => '56',
  'Y' => '57',
  'Z' => '58',
  '[' => '59',
  '\\' => '60',
  ']' => '61',
  '^' => '62',
  '_' => '63',
  '`' => '64',
  'a' => '65',
  'b' => '66',
  'c' => '67',
  'd' => '68',
  'e' => '69',
  'f' => '70',
  'g' => '71',
  'h' => '72',
  'i' => '73',
  'j' => '74',
  'k' => '75',
  'l' => '76',
  'm' => '77',
  'n' => '78',
  'o' => '79',
  'p' => '80',
  'q' => '81',
  'r' => '82',
  's' => '83',
  't' => '84',
  'u' => '85',
  'v' => '86',
  'w' => '87',
  'x' => '88',
  'y' => '89',
  'z' => '90',
  '{' => '91',
  '|' => '92',
  '}' => '93',
  '~' => '94',
);

$input = 'ABCDEF';
$output = '';
$sum = 0;
for($i = 0; $i < strlen($input); $i++){
  $sum += $map[$input[$i]]*($i+1);
}
$sum += 103;
$mod = $sum%103;
$code128a = 'Ë'.$input.array_search($mod, $map).'Î';
file_put_contents('ttt.csv', $code128a);

The logic here:
http://www.barcoderesource.com/code128_barcodefont.html