1. Go to this page and download the library: Download subbe/waveapp 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/ */
subbe / waveapp example snippets
$waveapp = new \Subbe\WaveApp\WaveApp();
$countries = $waveapp->countries();
$waveapp = new \Subbe\WaveApp\WaveApp();
$country = $waveapp->country(['code' => 'US']);