How do I get the external IP of my server using PHP?

Question

I often hear people say to use \"$_SERVER[\'SERVER_ADDR\']\", but that returns the LAN IP of my server (e.g. 192.168.1.100). I want the external IP.

Answer 1

If your server have a domain name you can ping it or you can use:

$sMyServerIP = gethostbyname('yourdomain.com');
echo $sMyServerIP;

It will return your outer IP address.