Telegram api does not send .doc, how to fix?

Question

Telegram

hello, there is a code that sends alerts and messages, but for some reason not all files are sent through this code. pdf flies, mp3 flies, jpg flies, doc(x) does not fly. How to fix it?

$ch = curl_init();
    curl_setopt_array(
        $ch,
        array(
              CURLOPT_URL => 'https://api.telegram.org/bot' . TELEGRAM_TOKEN . '/sendDocument',
            CURLOPT_POST => TRUE,
            CURLOPT_RETURNTRANSFER => TRUE,
            CURLOPT_TIMEOUT => 10,
            CURLOPT_POSTFIELDS => array(
                'chat_id' => TELEGRAM_CHATID,
                'caption' => $msg,
                'document' => $ooo
            ),
        )
    );
    curl_exec($ch);

Answer 1

What is the error in the answer?

Answer 2

'document' => $ooo
how can you guess what you have in this variable $ooo ?
read the documentation:
In sendDocument , sending to a URL currently only works for GIF , PDF and ZIP files.
Personally, I don’t want to use url and pdf,
zip jpg mp4 is normal
I solved the problem like this:
"chat_id" => $chat_id,
"caption" => "signature",
"document" => new CURLFile(realpath(__DIR__.'/1 .pdf'))