hook.io

$tokenbot = $Hook['env']['tokenbot']; 
$endpoint = "https://api.telegram.org/bot$tokenbot/";

$messages = $Hook["params"];
if (isset($messages['message'])) {
  $messages = $messages['message'];
} else {
  echo 'URL hook.io: https://'.$Hook['input']['host'].$Hook['input']['path'];
}

// ngucapin selamat datang member baru
if (isset($messages['new_chat_member'])) {
  $pesan = "Hai ".$messages['new_chat_member']['first_name']."!\n";
  $pesan.= "Selamat datang di Grup ".$messages['chat']['title'];
  kirimPesan($messages['chat']['id'], $pesan);
}

// ngucapin selamat tinggal buat user yang pergi
// HANYA jika telegram mengirimkan signal left member
if (isset($messages['left_chat_member'])) {
  $pesan = "Sampai jumpa lagi ".$messages['left_chat_member']['first_name'] ;
  kirimPesan($messages['chat']['id'], $pesan);
} 

// fungsi Kirim Pesan
function kirimPesan($chat_id, $text)
{
    global $endpoint;
    $data = array(
        'chat_id' => $chat_id,
        'text'  => $text
    );
 
  	// Buat parameter pengiriman
    $options = array(
        'http' => array(
            'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
            'method'  => 'POST',
            'content' => http_build_query($data),
        ),
    );
    $context  = stream_context_create($options); 
    $result = file_get_contents($endpoint.'sendMessage', false, $context);
   
    return $result;
}

//code by bang Hasan