README

The library provides a check if a ISBN-13 is valid or not. It also calculates a ISBN-13 check number with a given isbn root.

Install

composer require thomasdcodes/isbn-library

Use

The Class IsbnLibrary only allows static usage.

Use IsbnLibrary::sanitizeIsbn('978-3-123-45678-9') to remove all hyphens.

Use IsbnLibrary::isIsbn13Valid('978-3-123-45678-9') to check a ISBN is valid or not.

Use IsbnLibrary::calculateIsbn13CheckNumber('978-3-123-45678') to calculate the check number for a given ISBN-13 root.

Both functions (IsbnLibrary::isIsbn13Valid() and IsbnLibrary::calculateIsbn13CheckNumber()) are calling the IsbnLibrary::sanitizeIsbn() function before any other calculations. So you can give a ISBN-13 with hyphens.

Tests

All ISBN-13 numbers insight the tests were make by fantasy. If there is any valid ISBN-13 write me an email and I will change it to another ISBN-13.