PHP - Cloudflare IP Address Patch

<?php

// Add below PHP code at top of one of common file used.

if (isset($_SERVER['HTTP_CF_CONNECTING_IP']))
{
  $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];
  $_ENV["REMOTE_ADDR"] = $_SERVER['REMOTE_ADDR'];
}
elseif(isset($_SERVER['HTTP_X_FORWARDED_FOR']))
{
  $_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_X_FORWARDED_FOR"];
  $_ENV["REMOTE_ADDR"] = $_SERVER['REMOTE_ADDR'];
}
elseif(isset($_SERVER['HTTP_X_REAL_IP']))
{
  $_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_X_REAL_IP"];
  $_ENV["REMOTE_ADDR"] = $_SERVER['REMOTE_ADDR'];
}


?>