Telegram bot haqida

Question

function SendMessage($ChatId, $TextMsg)
{
 bot('sendMessage',[
'chat_id'=>$ChatId,
'text'=>$TextMsg,
'parse_mode'=>"html"
]);
}

$f = fopen("members.txt", "r");
         while(!feof($f)) {
             
           bot('sendMessage',[
              'chat_id'=>fgets($f),
              'text'=>"Salom",
          ]);
      }
     fclose($f);

Manashunda hamma bot foydalanuvchilariga salom deb yuboradi. Ammo Salomni o'rniga $textmessage ni qo'ya olmayapman.

Ya`ni adminni taniydigan bot qildim, va admindan xabar yuborish degan tugma hosil qildim, Admin yozgan narsani hamma foydalanuvchiga yubormoqchiman. Yordam beringlar