PDStudios

Getting User’s IP in PHP

Written by admin on May 17th, 2008 in PHP Tutorials, Tutorials.

You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

Sometimes you may need to get a users IP that is browsing your website and store it for protection or display it to the user.

In PHP this is simply done by using the $_SERVER variable.

The code below will store a users IP into a variable:

<?php

$UsersIP = компютри$_SERVER[’REMOTE_ADDR‘];

?>

REMOTE_ADDR simply grabs the remote IP Adress being used.

Lots more info can be obtained this way. But that is how to grab a Users IP.

One Response to “Getting User’s IP in PHP”

1. Nick Tompson Says:
   December 22nd, 2008 at 1:16 pm

   You could also more accurately obtain the IP address using the following, which can attempt to get proxy’s etc.

   // Setup from env
   $requestIP = $_SERVER[ "REMOTE_ADDR" ];
   
   if ( $_SERVER[ "HTTP_CLIENT_IP" ] )
   {
   	$requestIP = $_SERVER[ "HTTP_CLIENT_IP" ];
   }
   else if ($_SERVER[ 'HTTP_X_FORWARDED_FOR' ] AND preg_match_all( "#d{1,3}.d{1,3}.d{1,3}.d{1,3}#s", $_SERVER[ 'HTTP_X_FORWARDED_FOR' ], $matches ) )
   {
   	foreach ( $matches[0] as $IP )
   	{
   		// Chuck out RFC1918 IP
   		if ( !preg_match( "#^(10|172.16|192.168).#", $IP ) )
   		{
   			$requestIP = $IP; break;
   		}
   	}
   }
   else if ( $_SERVER[  "HTTP_FROM" ] )
   {
   	$requestIP = $_SERVER[ "HTTP_FROM" ];
   }
   else if ( $_SERVER[ "HTTP_PROXY_USER" ] )
   {
   	$requestIP = $_SERVER[ "HTTP_PROXY_USER" ];
   }
   

Leave a Reply

You must be logged in to post a comment.