getting ip address using PHP in case you are running VPN

问题

I am using VPN, and thus if i check http://whatismyip.com it will give me different ip than $_SERVER['REMOTE_ADDR'] or getenv('REMOTE_ADDR'). whatismyip gives my original ip address while $_SERVER or getenv gives my VPN ip address !!

is there anyway to get my original address ip using php in case that i am running VPN? and is there any way to get the PROXY IP address using PHP if i am using proxy also?

Thanks

回答1:

No. Whatever PHP (rather the web server) returns is the address that the request was made from. There's no way for the script to know if you're behind a VPN or proxy.

回答2:

Try the following - I'm not behind a proxy or VPN, so can't check right now:

$_SERVER['HTTP_X_FORWARDED_FOR']; // in place of REMOTE_ADDR

You can also try referencing SERVER_NAME using:

$_SERVER['HTTP_X_FORWARDED_HOST'];
$_SERVER['HTTP_X_FORWARDED_SERVER'];

Not sure what you'll get on a VPN. I know that anonymous proxies won't populate these variables.

来源：https://stackoverflow.com/questions/3763875/getting-ip-address-using-php-in-case-you-are-running-vpn