... as there are about 5 question/answers on SO that all have different variants? This is an information over load question. If someone can consolidate all the information into a single function that would be great.

A quick Google Search pulls up these top 5.

• How to get Client IP address in PHP?

• How can I get the MAC and the IP address of a connected client in PHP?

• How do I find a user's IP address with PHP?

• definitive way to get user ip address php

• Function to get user ip address

• What is the most accurate way to retrieve a user's correct IP address in PHP?

The last post seems to have the most information. However all seem to contain:

$_SERVER['REMOTE_ADDR'] 

as the most basic way to do it?