Ban people on website!

<?php
$ip = getenv('REMOTE_ADDR');
$blocked = "xx.xx.xx.xx"; // Replace the x's with the IP address.

if (ereg($blocked,$ip))
{
echo "You Have Been Banned. You cannot enter to website.";
exit();
}
?>

ipconfig/relese

<?PHP
	$ip = array("localhost", "noobhost", "123.456.78.90");
	if in_array($_SERVER['REMOTE_ADDR'], $ip)
		die("403 - Forbidden");
?>