This is a short tutorial on how to ban an IP address from your website.

Either create a new .php document in a text editor or add the following php to an existing .php document. (ex. index.php)
--
Now to explain the code.

1. <?php - Starts the php tag. Lets the browser know what language you are using.
2. $ip = getenv('REMOTE_ADDR'); - Gets the users IP address
3. $blocked = "xx.xx.xx.xx"; - Tells the browser that the "xx.xx.xx.xx" IP is blocked/banned
4. if (ereg($blocked,$ip)) - If the blocked/banned IP is the same as the users IP, the following echo will be displayed.
5. { - Starts a bracket
6. echo "You Have Been Banned"; - Echos the "You Have Been Banned" line onto the page.
7. exit(); - Exit so no more content is ouput
8. } - Ends a bracket
9. ?> - Ends the php tag

<?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";
exit();
}
?>

'echo "You Have Been Banned";'