IP address question

[netfrugal]

Is there a Global Variable that allows me to know the ip address of where my files are hosted?

I've tried:

<?
echo $_SERVER['SERVER_ADDR'];
?>

But I get:

Notice: Undefined index: SERVER_ADDR in c:\domains\site\index.php on line 2

Also, if this is the actual predefined variable to use, will it display the ip of the computer that the router assigned? Or will it display the ip of the modem?

thanks!

[bradgrafelman]

Hmm... I've never seen a case where there was no SERVER_ADDR defined. You can always do a phpinfo() and scroll down to the "PHP Variables" section at the bottom; there you will find the various indeces of the superglobals as well as their values.

As for your question about SERVER_ADDR, it should display the IP assigned to the server that the request came in through. If you type in http://localhost then SERVER_ADDR will return 127.0.0.1 . When I do a phpinfo() on one of my clustered dev servers, SERVER_ADDR shows the internal LAN IP of the server.

[MarkR]

$_SERVER['SERVER_ADDR'] is the IP address that the web server accepted the connection on; depending on your setup, this may be entirely different from one that you could or should use to upload files. Contact your provider for more info.

Mark