始终无法使用电报API发送图像

i want to create an app with telegram api and codeigniter. when i try to send image or others file, i get some error like this :

Message: file_get_contents(''): failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request

my controller is like this :

public function index()
{

this->tele = new telegramBot('token');

$path= base_url().'assets/maldini.png';
$info = $this->tele->sendPhoto('chati_id',$path);
print_r($info);
    $this->load->view('tes');
 }
}

how to solve this? thanks in advance :)

if you use this lib https://github.com/TelegramBot/Api, it's working code:

$chat_id = <chat_id>;
$token = <token>;
$bot = new \TelegramBot\Api\BotApi($token);

try {

    $bot->sendPhoto($chat_id, <file_id>, 'caption');

    //or if you file is local
    //$bot->sendPhoto($chat_id, new \CurlFile(<local_file.jpg>), 'caption');

} catch (\TelegramBot\Api\Exception $e) {

    $e->getMessage();

}

if not, this is simple GET method:

https://api.telegram.org/bot<token>/sendPhoto?chat_id=<chat_id>&photo=<file_id>

more info Telegram Bot API