if(is_user_steam(id))

new bool:steam = false

    if(is_user_steam(id))

        steam = true

stock bool:is_user_steam(id)

    static dp_pointer;

    if(dp_pointer || (dp_pointer = get_cvar_pointer("dp_r_id_provider")))

    {

        server_cmd("dp_clientinfo %d", id);

        server_exec();

        return (get_pcvar_num(dp_pointer) == 2) ? true : false;

    }

    return false;