1. Go to this page and download the library: Download scriptotek/google-books 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/ */
scriptotek / google-books example snippets
use Scriptotek\GoogleBooks\GoogleBooks;
$books = new GoogleBooks(['key' => 'YOUR_API_KEY_HERE']);