Telegram Bot Callback-Query not sent - php

Question

I've created 2 Inline-Button and I want to evaluate the callback_data. But unfortunately, the callback_data is not sent.
<?php
$bot_token = 'There is no Token seen'; // Telegram bot token
$url = "https://api.telegram.org/bot$bot_token/sendMessage";
$content = file_get_contents('php://input');
$update = json_decode($content, TRUE);
$callback_query = $update['callbackQuery'];
$callback_data = $callback_query['data'];
$ser_update = serialize($update);
db_query("INSERT INTO prefix_telegram (text) VALUES ('".$ser_update."')");
if (isset($update['message']['text'])) {
$text = $update['message']['text'];
$chat_id = $update['message']['chat']['id'];
if (strpos($text, 'outi') !== false) {
$reply = utf8_encode("Wähle einen Button!");
$keyboard = array(
"keyboard" => array(
array(
array(
"text" => "Button1",
"callback_data" => "1",
),
array(
"text" => "Button2",
"callback_data" => "2",
),
)
),
"one_time_keyboard" => true,
"resize_keyboard" => true
);
$postfields = array(
'chat_id' => "$chat_id",
'text' => "$reply",
'reply_markup' => json_encode($keyboard)
);
if (!$curld = curl_init()) {
exit;
}
curl_setopt($curld, CURLOPT_POST, true);
curl_setopt($curld, CURLOPT_POSTFIELDS, $postfields);
curl_setopt($curld, CURLOPT_URL,$url);
curl_setopt($curld, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($curld);
curl_close ($curld);
}
}
Result of file_get_contents
Could anyone help me with this problem? I have sent more information than just the text of the clicked button. Thanks!

Answer 1

There is muuuuch to correct.
In line 7, it is $callback_query = $update['callback_query'];
From line 19 to 34:
$keyboard = array(
"inline_keyboard" => array( // inline_keyboard not keyboard
array(
array(
"text" => "Button1",
"callback_data" => "1",
),
array(
"text" => "Button2",
"callback_data" => "2",
),
)
) //Removed onetimekeyboard etc.
);
From 36 to 40:
$postfields = array(
'chat_id' => $chat_id, // you don't have to use quotes when you're using variables or numbers.
'text' => $reply,
'reply_markup' => json_encode($keyboard)
);

Answer 2

The callback_data is not supported for reply_markup.keyboard. It is supported only for reply_markup.inline_keyboard.
You can vote for the issue Add callback_data to KeyboardButton (reply_markup.keyboard).