[PHP] IP Banning Guide

[Buax]

I know it's basic, but it's useful for new site owners or people that want to ban people! This is great if you are getting abuse/spam though a contact-box.

This is where you'll list all of the IP's you'd like banned. Please do not ban these IP addresses, they are you're own in case you didn't know. We are separating the IP addresses using a '|' symbol. We'll be splitting them up using this symbol in a minute!

 <?php  
// The ip addresses to be banned separated by | 
$ban = "127.0.0.1|127.0.0.2|127.0.0.3"); 
?>

This part of the script will store the current users IP address in a varible to save coding space. $visitor will now be the users IP.

 <?php  
// Store current user's IP in a variable 
$visitor = $_SERVER['REMOTE_ADDR']; 
?>

This part of the script will split up the IP addresses using the '|' symbol

 <?php  
// Split the IPs using | 
$list = explode("|", $ban); 
?>

The final part of the script will check the current IP address of the user ($visitor) with the list of IP's which have just been split up.

 <?php  
foreach($list as $ip) 
{ 
  if($visitor == $ip) 
  { 
    echo "You have been banned from this website!"; 
    exit; 
  } 
} 
?>

If you are too lazy to put it all together. It will look like this.

 <?php  

// The ip addresses to be banned separated by | 
$ban = "34.43.97.31|86.53.73.27|41.107.14.621"); 

// Store current user's IP in a variable 
$visitor = $_SERVER['REMOTE_ADDR']; 

// Split the IPs using | 
$list = explode("|", $ban); 

foreach($list as $ip) 
{ 
  if($visitor == $ip) 
  { 
    echo "You are banned from this site"; 
    exit; 
  } 
} 

?>

Now that is quite a bit of code to put on every single page. If you use PHP includes, we can cut it down to three lines, although you have to create a PHP file on you're website.

 <?php  
include ('banned_users.php'); 
?>

[Jme]

You could save some code and just do..

<?php
$banned = array("34.43.97.31", "86.53.73.27", "41.107.14.621");//Seperate each by a comma.
$uip = $_SERVER['REMOTE_ADDR'];//Visitors IP Address.
if(in_array($uip, $banned))//Searches the array for the users IP.
{
die "You are banned..";//They're banned
}
?>

but nice tutorial none the less.

[Buax]

You could save some code and just do..

<?php
$banned = array("34.43.97.31", "86.53.73.27", "41.107.14.621");//Seperate each by a comma.
$uip = $_SERVER['REMOTE_ADDR'];//Visitors IP Address.
if(in_array($uip, $banned))//Searches the array for the users IP.
{
die "You are banned..";//They're banned
}
?>

but nice tutorial none the less.

That would of been the easy way todo it.

[Slowpoke]

Very useful, should be stuck, as should your other guides .

[Jme]

That would of been the easy way todo it.

Exactly my point. It does the exact same with less lines of code, why have extra more complex code when there's a simpler way that is just as good?

[Unpredictible.1]

I just laughed at the ownage..

If you was good at PHP you would of known how to do it properly like Jamie said.

[Buax]

I just laughed at the ownage..

If you was good at PHP you would of known how to do it properly like Jamie said.

The way Jamie did it was more advance then my method, I'm bad at PHP, therefore I used a easy method - His is shorter etc, does the same task, therefore better, although it's more advance. Yeah coding a like his would of been the easier way to do but I used the way I thought was easy for me.

Sorry for trying to post scripts in the community? :|

[Pyroka]

Very useful +rep I might just use this in my serverside course.

[Hypertext]

Very useful +rep I might just use this in my serverside course.

Since when could you code anything other than freewebs

[Pyroka]

OI! I'm actually pretty good I'll have you know. I can do CSS, the javascript C+P method & advanced HTML along with a bit of XHTML and XML. I'm so amazing.