This example gets the users IP address and exits the page if it matches a banned number.
Quote:
<?php
//Set banned IP
$banned = '123.123.123.123';
//get user IP address
$userip = $_SERVER['REMOTE_ADDR'];
//check for banned IP address
if($userip == $banned){
echo "<BR>This IP address has been banned";
exit();
}
//continue with script...
?>
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