How to distinguish a new user who has joined a group from a bot?

Question

PHP

Hello everyone, I'm trying to get a string is_botfrom a new user, I tried a million variations, none of them worked, here is a code snippet:

if (array_key_exists("new_chat_participant", $data['message'])) {

    $mes_from = $data['message']['new_chat_participant']['is_bot'];

    if($data['message']['new_chat_participant']['id'] == $bd_user['tg_id'])
    {
        priv($hello, $data['message']['chat']['id']);
    }
    else
    {   
        if($mes_from == false) {
            kickChatMember($data['message']['chat']['id'], $data['message']['new_chat_participant']['id']);
        }
    }
}

I want to kick new users if they are not in the database, except for bots
I will be grateful for any advice

Answer 1

Decided to change $mes_from == falseto$mes_from != true