PHP code example of byrokrat / checkdigit

1. Go to this page and download the library: Download byrokrat/checkdigit 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/ */

byrokrat / checkdigit example snippets


$luhn = new byrokrat\checkdigit\Luhn;

// outputs '1' (true)
echo $luhn->isValid('55555551');

// outputs '' (false)
echo $luhn->isValid('55555550');

// outputs '1'
echo $luhn->calculateCheckDigit('5555555');