kazimmerman's method is best

pr0gr4mm3r — Wed, 08 Jul 2009 00:53:40 +0000

kazimmerman's method is best if just blocking a few IP's. If you want that list to dynamically update, you may want to store them in an external text file or database.

If you want to block a range of IP's, then you may want to use the ip2long() function.

INET_ATON() and INET_NTOA()

teammatt3 — Tue, 07 Jul 2009 20:43:00 +0000

INET_ATON() and INET_NTOA() are functions that convert IPs to their integer representation.

I wouldn't use them, unless you're storing thousands of IPs.

I would use kazimmerman's method for blocking IPs. There's no reason to complicate things with those INET functions.

Maybe I'm just ignorant, but

kazimmerman — Tue, 07 Jul 2009 15:50:06 +0000

Maybe I'm just ignorant, but I've never used these functions and I've been able to block IP addresses before.

Just set up an array (these can be extracted from a MySQL database if there will be a lot, and to prevent having to edit the PHP file itself) with all of the IP addresses that need to be banned, and then just redirect from that page if the user's IP address is in the array. Something like this:

<?php
$banned = array("x.x.x.x","y.y.y.y","z.z.z.z");
if (in_array($_SERVER['REMOTE_ADDR'],$banned)) {
  header("Location: differentPage.php");
}
else {
  //Normal page here
}
?>