How to sendmessage after answercallbackquery in Telegram? - php

Question

I'm trying to develop a Telegram Bot in PHP, but I failed to make my bot answer the user when he press an inline button.
Can someone help me sending a message (sendMessage method) after calling the answerCallback method?
Here's my last trial code:
if ($call_back_query != null) {
$response = $call_back_query;
$botUrl = "https://api.telegram.org/bot" . BOT_TOKEN . "/answerCallbackQuery";
$postFields = array('callback_query_id' => $call_back_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
$response = "help me if you can, i'm feeling down";
header("Content-Type: application/json");
$parameters = array('chat_id' => $chatId, "text" => $response);
$parameters["method"] = "sendMessage";
echo json_encode($parameters);
}

Answer 1

Ok, I've understood the problem:
In sendText I have to use $call_back_from instead of $chatId, because he's answering to the callback query and not a simple message (I think so...)
While
$chatId = isset($message['chat']['id']) ? $message['chat']['id'] : "";
$call_back_from = isset ($update['callback_query']['from']['id']) ? $update['callback_query']['from']['id'] : "";
The code will be
if ($call_back_query != null) {
$response = $call_back_query;
$botUrl = "https://api.telegram.org/bot" . BOT_TOKEN . "/answerCallbackQuery";
$postFields = array('callback_query_id' => $call_back_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
$response = "help me if you can, i'm feeling down";
header("Content-Type: application/json");
$parameters = array('chat_id' => $call_back_from, "text" => $response);
$parameters["method"] = "sendMessage";
echo json_encode($parameters);
}
Hope this could be helpful!
Have a nice try!