PHP Telegram Bot sends same message many times - php

Question

I have a Telegram Bot which worked fine for a few months. About 3-4 weeks ago the Telegram Bot sends sometimes (!) the same messages a few times - not just one time!
I have already tried many things to fix that:
I save the update_id in the database. If the new update_id is higher than the saved one, the bot sends the message. If not, an error occurs. (Found out yesterday that every duplicate message has got a new (higher) update_id - so this method is useless)
I tried to add exit(); to every PHP Function - didn't work.
I checked the whole code, if there is a not closed loop. But everything is fine.
I added a ?limit=1 to the function, but also no chance.
Slowly I am at the end of my ideas. Maybe someone has got a good answer for that.
I have always the $update and the chat ID:
define('api', 'https://api.telegram.org/bot'.token.'/');
$data = file_get_contents("php://input");
$update = json_decode($data, true);
$cbid = $update["callback_query"]["from"]["id"];
My function looks like this:
function callback($up){
return $up["callback_query"];
}
function tg_send_message($id, $text) {
$params=[
'chat_id' => $id,
'text' => $text,
'parse_mode' => 'Markdown',
];
$ch = curl_init('https://api.telegram.org/bot'.token.'/sendMessage?limit=1');
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, 3500);
curl_setopt($ch, CURLOPT_TIMEOUT_MS, 3500);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, ($params));
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$result = curl_exec($ch);
curl_close($ch);
}
If I want to send a message if someone clicks on the inline button Top 10:
if(callback($update) and $cbdata == "top_10"){
tg_send_message($cbid, "This is my message!");
}
Everything worked fine and is working now as well - the bot just sends sometime a message multiple times.
The extra messages have always a new update_id! And if there is a variable value from another API (like Bitcoin price), it is also changing. It's like you clicked 22 times on the button (but you just clicked once)
I am very thankful for every helpful answer! Thank you very much.
Best regards.
EDIT: I have also tried the following:
function tg_btn_click_send_message($id, $text) {
$response = $update["callback_query"];
$botUrl = "https://api.telegram.org/bot" . BOT_TOKEN . "/answerCallbackQuery";
$postFields = array('callback_query_id' => $callback_query_id, 'text' => $response);
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type:multipart/form-data"));
curl_setopt($ch, CURLOPT_URL, $botUrl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
$output = curl_exec($ch);
//send Text
header("Content-Type: application/json");
$parameters = array('chat_id' => $id, "text" => $text);
$parameters["method"] = "sendMessage";
echo json_encode($parameters);
}
Like suggested here: php telegram answercallbackquery sendmessage
But also not working.

Answer 1

If someone has the same problem, here the solution:
function tg_answer_callback_query($cbq_id) {
$params=[
'callback_query_id' => $cbq_id
];
$ch = curl_init('https://api.telegram.org/bot'.token.'/answerCallbackQuery');
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, 3500);
curl_setopt($ch, CURLOPT_TIMEOUT_MS, 3500);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, ($params));
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$result = curl_exec($ch);
curl_close($ch);
}
Run this code at the end of if(callback($update)) (not after it!) and it works!