Alexander

protected function sendRequest($hostname, array $params)
    {
        $params['client'] = '13';
        $url = $hostname . "?" . http_build_query($params);
        $response = $this->getClient()->get($url);

        if ($response->getStatusCode() != "200") {
            throw new Exception("Failed to call the external text-to-speech service");
        }

        return $response->getBody();
    }

require_once __DIR__ . "/vendor/autoload.php";

use duncan3dc\Speaker\TextToSpeech;
use duncan3dc\Speaker\Providers\GoogleProvider;

$provider = new GoogleProvider;

$tts = new TextToSpeech("Hello World", $provider);
$tts->save("hello.mp3");

$txt_arr = explode(' ', $_POST['text']);
foreach($text_arr as $txt){
echo "* $txt";
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script>
      $(document).ready(function(){
        $('#btn').click(function(){
          alert('yo');
        });
      });	
</script>