How can I get the client's IP address in a PHP webservice? [duplicate]

Question

I have developed a PHP webservice. I would like to log all incoming connections of the WS clients, which are consuming this web service. How can I obtain the client's IP address? The value of

$_SERVER['HTTP_CLIENT_IP']

seems to be always empty.

Answer 1

This should be what you want:

$_SERVER['REMOTE_ADDR'] 

The IP address from which the user is viewing the current page.

http://php.net/manual/en/reserved.variables.server.php

Answer 2

Actually, I would suggest using this function to cover all of your bases, such as people using proxies, shared networks etc.:

function getUserIpAddr() {     if (!empty($_SERVER['HTTP_CLIENT_IP'])) //if from shared     {         return $_SERVER['HTTP_CLIENT_IP'];     }     else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))   //if from a proxy     {         return $_SERVER['HTTP_X_FORWARDED_FOR'];     }     else     {         return $_SERVER['REMOTE_ADDR'];     } }