<?
$banned_ip = array (
"ip1",
"ip2"
);
if ( in_array( getenv("REMOTE_ADDR"), $banned_ip ) )
{
die ("Your IP is not accessible!");
}

$ban_range_low=ip2long("1.1.1.1");
$ban_range_up=ip2long("1.1.1.100");
$ip=ip2long($_SERVER["REMOTE_ADDR"]);
if ($ip>$ban_range_low && $ip<$ban_range_up)
{
echo "Your IP is not accessible!";
exit();
}
?>