biblys/isbn
biblys/isbn can be used to:
- validate a string against the ISBN-10, ISBN-13 and EAN-13 formats
 - convert an ISBN to ISBN-10, ISBN-13, EAN-13 and GTIN-14 formats
 - parse an ISBN and extract registration agency, publisher code, publication code, checksum, etc.
 
Installation
Install with composer:
composer require biblys/isbn:^2.4.0
Usage
Convert
Use case: converting an EAN (9782843449499) to an ISBN-13 (978-2-84344-949-9).
<?php
use Biblys\Isbn\Isbn;
try {
    $input = "9782843449499";
    $isbn13 = Isbn::convertToIsbn13($input);
    echo "ISBN-13: $isbn13"; // Prints ISBN-13: 978-2-84344-949-9
} catch(Exception $e) {
    echo "An error occurred while attempting to format ISBN $input: ".$e->getMessage();
}
All formatting methods:
Isbn::convertToIsbn10Isbn::convertToIsbn13Isbn::convertToEan13Isbn::convertToGtin14
Validate
Use case: validating an incorrectly formed ISBN-13 (978-2-843-44949-9, should be 978-2-84344-949-9).
<?php
use Biblys\Isbn\Isbn;
try {
    $input = "978-2-843-44949-9";
    Isbn::validateAsIsbn13($input);
    echo "ISBN $input is valid!";
} catch(Exception $e) { // Will throw because third hyphen is misplaced
    echo "ISBN $input is invalid: ".$e->getMessage();
}
All validating methods:
Isbn::validateAsIsbn10Isbn::validateAsIbsn13Isbn::validateAsEan13Isbn::isParsable
Learn more about validating ISBNs
Development
Using Gitpod
You can start a dev environment by clicking
and start hacking in your browser right away!
Locally
If you'd rather set up a local dev environment, you'll need:
- PHP 7.x
 - Composer
 - (Optional) Docker to run tests and debug against different version of PHP
 
Clone this repository and run composer install to get started!
Tests
Run tests with PHPUnit:
composer install
composer test
Run tests in a docker container:
composer docker:test
Run tests in a docker container using a specific PHP version:
PHP_VERSION=7.1 composer docker:test
ISBN ranges update
New ISBN ranges may be added from time to time by the International ISBN Agency. Whenever it happens, this library must be updated. If a range update is necessary, please open an issue on GitHub. You can also open a pull request after updating the ranges your self with the following commands:
composer install
composer run update-ranges
Or using a docker container:
composer docker:update-ranges