Get IP Address in PHP

//function for getting IP
//start
function getuserip() 
{
		
    if (isset($_SERVER))
   {
        if (isset($_SERVER["HTTP_X_FORWARDED_FOR"]))
            return $_SERVER["HTTP_X_FORWARDED_FOR"];
       
        if (isset($_SERVER["HTTP_CLIENT_IP"]))
            return $_SERVER["HTTP_CLIENT_IP"];
		
	        return $_SERVER["REMOTE_ADDR"];
    }
		
	    if (getenv('HTTP_X_FORWARDED_FOR'))
	        return getenv('HTTP_X_FORWARDED_FOR');
			
	    if (getenv('HTTP_CLIENT_IP'))
	        return getenv('HTTP_CLIENT_IP');
		
		    return getenv('REMOTE_ADDR');
}
//end

echo $user_ip = getuserip(); //call to the function

4 thoughts on “Get IP Address in PHP”

1. Привет! This let’s the web server keep its default behavior of saving the session locally, leaving it up to the load balancer to get a client back to that server.

2. This code is more complete:

   function get_ip_address()
   {
   $header_checks = array(
   ‘HTTP_CLIENT_IP’,
   ‘HTTP_PRAGMA’,
   ‘HTTP_XONNECTION’,
   ‘HTTP_CACHE_INFO’,
   ‘HTTP_XPROXY’,
   ‘HTTP_PROXY’,
   ‘HTTP_PROXY_CONNECTION’,
   ‘HTTP_VIA’,
   ‘HTTP_X_COMING_FROM’,
   ‘HTTP_COMING_FROM’,
   ‘HTTP_X_FORWARDED_FOR’,
   ‘HTTP_X_FORWARDED’,
   ‘HTTP_X_CLUSTER_CLIENT_IP’,
   ‘HTTP_FORWARDED_FOR’,
   ‘HTTP_FORWARDED’,
   ‘ZHTTP_CACHE_CONTROL’,
   ‘REMOTE_ADDR’
   );

   foreach ($header_checks as $key)
   if (array_key_exists($key, $_SERVER) === true)
   foreach (explode(‘,’, $_SERVER[$key]) as $ip)
   {
   $ip = trim($ip);
   if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false)
   return $ip;
   }
   }

   1. @Jarmey – Thanks for sharing

3. Interesting article, thanks for sharing it with us.

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