README

GS1 Barcode decoder

A simple library that decodes GS1 barcodes. For a full list of supported application identifiers that ship with this package, see supported identifiers.

Instalation

This package requires PHP ^8.2

composer require janisvepris/gs1-decoder

Usage

Decode GS1 barcode

<?php

use JanisVepris\GS1Decoder\Decoder;
use Janisvepris\Gs1Decoder\ApplicationIdentifier\Gtin;

$barcode = '0112345678901234[FNC1]2140928049820384[FNC1]';
$decoder = new Decoder();

$decoded = $decoder->decode($barcode);
$decoded->hasIdentifier(Gtin::CODE);
$decoded->getIdentifier(Gtin::CODE)->getValue();

Custom application identifier code -> class map

Normally, the decoder gets initialized with a default identifier class map which includes all the identifiers that ship with this package. You can override it with your own.

<?php

use JanisVepris\GS1Decoder\Decoder;
use Janisvepris\Gs1Decoder\ApplicationIdentifier\Gtin;
use Janisvepris\Gs1Decoder\IdentifierMap;

$barcode = '0112345678901234';

$decoder = new Decoder(new IdentifierMap([
    '01' => Gtin::class,
]));

// or

$decoder = new Decoder();
$decoder->setIdentifierMap(new IdentifierMap([
    '01' => Gtin::class,
]));

$decoded = $decoder->decode($barcode);

Define your own application identifier class

Multiple abstract identifier classes are available for extension:

• SimpleIdentifier - string value, set length
• DateIdentifier - DateTime value, set length
• DecimalIdentifier - float value, set length
• VariableLengthIdentifier - string value, variable length (min-max)

You can define your own as long as they implement ApplicationIdentifierInterface.

<?php

use JanisVepris\GS1Decoder\Decoder;

class MyGtinIdentifier extends SimpleIdentifier
{
    protected $code = '01';
    protected int $length = 99;
    protected string $englishTitle = 'My awesome title';
}

// Replace the default identifier class map with your own 
$decoder = new Decoder(new IdentifierMap([
    '01' => MyGtinIdentifier::class,
]));

// or add your own identifier class to the default map
$decoder = new Decoder();
$decoder->getIdentifierMap()
    ->addIdentifierClass('01', MyGtinIdentifier::class)

Note

This package does not validate the barcode. It tries to decode it as is.