NZ Tik

So you don't have to troll logs when your web page doesn't display what is expected, copy and paste this to the top of your PHP code. ini_set('display_errors', 1);  ini_set('log_errors', 1);  ini_set('error_log', dirname(__FILE__) . '/error_log.txt');  error_reporting(E_ALL); You will probably want to remove it once in production.

If you parse an IP address to this function, it will return whether or not the ip address is private (RFC1918). Not sure if there is a better way of achieving this? $private = DetermineLocal('192.168.1.1'); if ($private) {echo 'This IP address is a private IP address';} else echo 'This IP address is not private'; function DetermineLocal($ip) { $private_ip = array("/^0\./", "/^127\.0\.0\.1/", "/^192\.168\..*/", "/^172\.((1[6-9])|(2[0-9])|(3[0-1]))\..*/", "/^10\..*/", "/^224\..*/", "/^240\..*/"); while (list ($key, $val) = each ($private_ip)) { if (preg_match($val, $ip)) { return true; } } } ?>