Get Current User's IP

functions.php

<?php
/**
* Get Ip function 
*/

function get_current_user_ip() {
	if (!empty($_SERVER['HTTP_CLIENT_IP'])) :
	    $ip = $_SERVER['HTTP_CLIENT_IP'];
	elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) :
	    $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
	else :
	    $ip = $_SERVER['REMOTE_ADDR'];
	endif;
	return $ip;
}