:3

<?php
    require 'vendor/autoload.php';
    use Telegram\Bot\Api;

    $telegram = new Api('TOKEN', false);


    $keyboard = [
        ['1', '2', '3'],
        ['4', '5', '6'],
        ['7', '8', '9'],
        ['*', '0', '#']
    ];

    $X = file_get_contents("php://input");
    $X = json_decode($X, TRUE);
    if ( $X["message"]["text"] == "4" ) {
        $reply_markup = $telegram->replyKeyboardHide();

        $response = $telegram->sendMessage([
            'chat_id' => $X["message"]["chat"]["id"],
            'text' => 'You did it :)',
            'reply_markup' => $reply_markup
        ]);

    }else{



    $reply_markup = $telegram->replyKeyboardMarkup([
        'keyboard' => $keyboard,
        'resize_keyboard' => false,
        'one_time_keyboard' => true
    ]);

    $response = $telegram->sendMessage([
        'chat_id' => $X["message"]["chat"]["id"],
        'text' => 'What is the number ?',
        'reply_markup' => $reply_markup
    ]);

    $messageId = $response->getMessageId();

    }
?>