function is_black($string)
{
    $black_list = "טמבל|אידיוט|מפגר";
    $string = urldecode($string);
    if(preg_match("/^($black_list)$/i", $string))
    {
        return 1;
    }
    else
    {
        if(preg_match("/^.&($black_list)&.$/i", $string))
        {
            return 1;
        }
        else
        {
            if(preg_match("/^($black_list)./i", $string))
            {
                return 1;
            }
            else
            {
                return 0;
            }
        }
    }
}