1. Go to this page and download the library: Download rechtlogisch/steuer-id library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
rechtlogisch / steuer-id example snippets
isSteuerIdValid('02476291358'); // => true
use Rechtlogisch\SteuerId\SteuerId;
(new SteuerId('02476291358'))
->validate() // ValidationResult::class
->isValid(); // => true