Banning an IP Using PHP

You first need to get the IP of the person you wish to ban.
Most popular PHP Scripts such as ShoutBoxes, Pluggers, and Polls, all log users IP's.

Now copy and paste the following code into any page you
wish that Internet Protocol (IP) Not to view.

<?php
if (ereg("IP",$REMOTE_ADDR))
{
echo "You are banned go away."; exit(); }
?>

Things To Change:
Change IP to whatever IP you wish to ban.
You are banned go away. Can be changed to whatever message
you wish to display when that user views the pages in which you inserted this code.

This was the follow up tutorial...slighty more plump but pretty much the same.

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Someone causing you pain? BAN THEM!

<?php
$ip=getenv('REMOTE_ADDR');
$banned=xxx.xxx.xxx.xxx;
if (ereg($banned,$ip)) {
echo 'Sorry...but you've been BANNED!';
exit();
}
?>

-- That's the full code...but what's the use of it without an explination?

<?php
This opens the php script.

$ip=getenv('REMOTE_ADDR');
This gets the visitor's IP address.

$banned=xxx.xxx.xxx.xxx;
Replace "xxx.xxx.xxx.xxx" with the IP of the banned user.

if (ereg($banned,$ip)) {
This see's if the visitor's IP and the Banned IP match.

If they do match the visitor will recieve a message:
echo 'Sorry...but you've been BANNED!';
And the page wont load. (Feel free to change the message).

exit();
}
?>
Just closing the script.

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No more trouble!