Re: [McCodes] Duplicate IP block
$user_ip = $_SERVER['REMOTE_ADDR'];
$_GET['ID'] = abs(@intval($_GET['ID']));
$select = sprintf("SELECT lastip FROM users WHERE ((lastip = '%s') OR (lastip_login = '%s') OR (lastip_signup = '%s') AND (userid = %u))", $user_ip, $user_ip, $user_ip, $_GET['ID'], $c);
$query = mysql_query($select);
if(mysql_num_rows($query) > 1) //Only one user should be found - you!
{
echo 'Another account has been detected on your IP. As a result, sending to this person is prohibited';
$h->endpage();
exit;
}