cIP

cIP

<?php 
/**  
    $Id: cIP.php,v 1.0 2010/10/14 20:07:04 laudarch Exp $ 
    Author: Archzilon Eshun-Davies
    URL: http://www.phpclasses.org/package/8494-PHP-Determine-the-IP-address-of-the-user-from-headers.html
    License: BSD License
    PHP v: 5.0
*/ 

# Set to true if you want to test the class 
$TEST = false; 
    
interface iIP { 
    public static function getusrip(); 
} 
    
class cIP implements iIP { 
    /** 
     * Returns User IP Address 
     * @params 
     * IN: NONE 
     * OUT: ip address(0.0.0.0) 
     */ 
    public static function getusrip() 
    { 
        $ip = null; 
        if ((isset($_SERVER['HTTP_X_FORWARDED_FOR'])) && 
            (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))) { 
            $ip = $_SERVER['HTTP_X_FORWARDED_FOR']; 
        } elseif ((isset($_SERVER['HTTP_CLIENT_IP'])) && 
              (!empty($_SERVER['HTTP_CLIENT_IP']))) { 
            $ip = explode(".", $_SERVER['HTTP_CLIENT_IP']); 
            $ip = "{$ip[3]}.{$ip[2]}.{$ip[1]}.{$ip[0]}"; 
        } elseif ((!isset($_SERVER['HTTP_X_FORWARDED_FOR'])) && 
              (empty($_SERVER['HTTP_X_FORWARDED_FOR'])) && 
              (!isset($_SERVER['HTTP_CLIENT_IP'])) && 
              (empty($_SERVER['HTTP_CLIENT_IP'])) && 
              (isset($_SERVER['REMOTE_ADDR'])) ) { 
               $ip = ($_SERVER['REMOTE_ADDR']); 
        } else { 
            // ip is null 
            } 
            return ($ip); 
    } 
} 
    
if ($TEST) { 
    $ip = cIP::getusrip(); 
    print "ip: $ip\n<br />"; 
    print "TEST done!"; 
    exit; 
} 
?>