Telegram API Bot - CallbackQuery response to the touch of a button - php

Question

Actually the question is how to get an answer from the user at the click of a button?
What should be changed\rewritten in the code?
$access_token = '...';
$api = 'https://api.telegram.org/bot' . $access_token;
$output = json_decode(file_get_contents('php://input'), TRUE);
$message = $output['message']['text'];
$chat_id = $output['message']['chat']['id'];
if ($output['callback_query'] != null){
$data = $output['callback_query']['data'];
$data_id = $output['callback_query']['id'];
$chat = $output['callback_query']['message']['chat']['id'];
switch($data){
case "/123":
answerCallback($data_id, '123');
sendMessage($chat, "123", null);
break;
case "/plz":
answerCallback($data_id, 'plz');
sendMessage($chat, "plz", null);
break;
}
}
elseif ($message != null) {
switch($message) {
case '/test':
$inline_button1 = array("text"=>"123","callback_data"=>"/123");
$inline_button2 = array("text"=>"work plz","callback_data"=>'/plz');
$inline_keyboard = [[$inline_button1,$inline_button2]];
$keyboard=array("inline_keyboard"=>$inline_keyboard);
$replyMarkup = json_encode($keyboard);
sendMessage($chat_id, "ok", $replyMarkup);
break;
}
}
function sendMessage($chat_id, $message, $replyMarkup) {
file_get_contents($GLOBALS['api'] . '/sendMessage?chat_id=' . $chat_id . '&text=' . urlencode($message) . '&reply_markup=' . $replyMarkup);
}
function answerCallback($id, $text) {
file_get_contents($GLOBALS['api'] . '/answerCallbackQuery?callback_query_id='.$id.'&text='.$text);
}
This code only allows you to get a response from the message /test, and does not respond to button presses.
Uses webhook.

Answer 1

Have a look at your error log. You forgot to provide a value for $replyMarkup.
PHP Warning: Missing argument 3 for sendMessage()