function getUserIP() {
$userIP = '';
if (isset($_SERVER['HTTP_ORIGINAL_IP']) && !empty($_SERVER['HTTP_ORIGINAL_IP']))
$userIP = $_SERVER['HTTP_ORIGINAL_IP'];
elseif (isset($_SERVER['HTTP_CLIENT_IP']) && !empty($_SERVER['HTTP_CLIENT_IP']))
$userIP = $_SERVER['HTTP_CLIENT_IP'];
elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']))
$userIP = $_SERVER['HTTP_X_FORWARDED_FOR'];
elseif (isset($_SERVER['REMOTE_ADDR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']))
$userIP = $_SERVER['REMOTE_ADDR'];
return $userIP;
}PHP Get User IP Address
This function takes into account the possibility that your server might be behind a proxy.
This function first attempts to grab the user's IP from other server variables (which take proxies into account) before resorting to REMOTE_ADDR.
In the event that your server is behind a proxy, the traditional method of using $_SERVER['REMOTE_ADDR'] will simply return the Proxy's IP address (not the user).
This function first attempts to grab the user's IP from other server variables (which take proxies into account) before resorting to REMOTE_ADDR.
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Universal Web Services, LLC
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