CODE 39 Extended

Plain CODE 39 reaches 43 characters. The extended form covers all 128 ASCII values by encoding anything outside those 43 as a pair, with $, %, / and + acting as shift characters.

Lower case and control characters therefore cost two CODE 39 characters each, and a symbol carrying mixed-case text comes out close to twice the width of the same text in upper case.

Type Token

Input

Examples

Digits

<?php

require_once __DIR__ . '/vendor/autoload.php';

$barcode = new \Com\Tecnick\Barcode\Barcode();
$bobj = $barcode->getBarcodeObj(
    type: 'C39E',
    code: '0123456789',
    width: -3,
    height: -30,
    color: 'black',
    padding: [0, 0, 0, 0],
)->setBackgroundColor('white');

echo $bobj->getInlineSvgCode();

Mixed case, reached through the shift pairs

$bobj = $barcode->getBarcodeObj(
    type: 'C39E',
    code: 'tc-lib-barcode',
    width: -3,
    height: -30,
    color: 'black',
    padding: [0, 0, 0, 0],
)->setBackgroundColor('white');

Errors

These payloads raise \Com\Tecnick\Barcode\Exception:

See Also

• tc-lib-barcode : the library overview.
• Rendering Options : size, colour, padding.
• Output Formats : every renderer.
• CODE 39 : the 43-character form.
• CODE 39 Extended with check character : the same, with a check character.
• API reference : the generated class documentation.