Telegram bot send file and text PHP - php

Question

I've got a basic bot set up that will send text back to the user, now I also want to send the user an audio message. But that I cannot do, here is the code.
I'm also using this https://github.com/Eleirbag89/TelegramBotPHP to send the audio
include("Telegram.php);
define('BOT_TOKEN', 'tokentoken');
define('API_URL', 'https://api.telegram.org/bot'.BOT_TOKEN.'/');
$telegram = new Telegram(BOT_TOKEN);
$content = file_get_contents("php://input");
$update = json_decode($content, true);
$chatID = $update["message"]["chat"]["id"];
$message = $update["message"]["text"];
$reply = sendMessage($message);
$sendto =API_URL."sendmessage?chat_id=".$chatID."&text=".$reply;
file_get_contents($sendto);
function sendMessage(&$string) {
switch ($string) {
case "Hi":
$message = "Hi Back";
sendAudio();
break;
case "Bye":
$message = "Bye Bye";
break;
default:
$message = "Default";
}
return $message
}
func sendAudio() {
$sound = curl_file_create('sampleAudio.mp3', 'audio/mp3');
$newContent = array('chat_id' => $chatID, 'audio' => $sound);
$telegram->sendAudio($newContent);
}
Calling the code outside of the functions works, but than the user gets the file each time they type something. I experimenting so a bit of explanation would be great.

Answer 1

You have some errors:
First line " is unclosed
Last function, you've typed "func" instead of "function"
In sendAudio() you've used $chatID but you've to pass it as a parameter of sendAudio() or to set is as global.