sendPicture($id, "picture.png");


function sendPicture($_chatID, $file_on_server){

    $target_url = 'https://api.telegram.org/**<YOUR TOKEN HERE>**/sendphoto';

    $file_name_with_full_path = realpath('./'.$file_on_server);

    $post = array(
        'chat_id'   => $_chatID,
        'photo'     => '@'.$file_name_with_full_path
    );

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL,$target_url);
    curl_setopt($ch, CURLOPT_POST,1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    $result=curl_exec ($ch);
    curl_close ($ch);
    echo $result;


}