[jumbo1]

Dear all

I have a problem getting the IP information of my visitors from my server.

I know the IP information is acquired through the following variable:

Code:

$ip=$_SERVER['REMOTE_ADDR'];

Though, i tested this one on a computer connected to an ISP that has a proxy. This code returns an IP: 88.86.31.1 while IPCONFIG on windows and www.whatismyip.com returned 88.86.4.196 so i though most probably the IP returned by the code is actually the IP of the proxy not that of the client...

how can i extract the actual IP of the client??

Thank you

[Keith]

You can't.

Besides, how would it help? It will pretty much always be 192.168.*.*

[jumbo1]

of course it would help!!

as i said, 88.86.31.1 is the IP of the ISP's proxy... meaning that the variable $_SERVER['REMOTE_ADDR'] would return the same IP for all those people connected to the same ISP!! i cant assume that 1000 people all have the same IP!! i need the real IP of these people over the internet, and i CAN... coz www.whatismyip.com can...

[Keith]

Huh? You said in your first post that whatismyip.com can only grab the proxy IP, and then in your second message you say it can grab the internal IP? Am I reading that correctly? Once again, you cannot with PHP... and neither can whatismyip.com.

I work in an office with 60+ people, and behind our proxy whatismyip.com returns the same IP for everyone... the external public IP. It cannot get beyond proxies, routers, etc... where our IP is 192.168.2.*

Since PHP is a server-side language, it cannot access internal IP addresses. You will need something client-side, like javascript, to grab the IP from the browser and send that to a PHP file where it can be recorded.

[jumbo1]

no, what i said is that whatismyip.com returns my correct IP (88.86.4.196) while the PHP $_SERVER['REMOTE_ADDR'] returns the IP of the proxy (88.86.31.1) which is the same for all those connected to that particular ISP.

so there MUST be a way to know what my true IP is... maybe PHP cannot get it..

ipconfig gives me 192.168.5.14 for "server IP address"...

anyway, thanks for the help.. i will try to look somewhere else, and i will report in case of success

[0o0o0]

Did anyone hear a please or thankyou? maybe I missed it.
lol

[End User]

Originally Posted by jumbo1

so there MUST be a way to know what my true IP is... maybe PHP cannot get it.

Listen to Keith. You can't necessarily get it via PHP due to several issues- proxies, local masking by routers and firewalls, etc.

[NabZ]

This should help.

$ip = (getenv(HTTP_X_FORWARDED_FOR)) ? getenv(HTTP_X_FORWARDED_FOR):getenv(REMOTE_ADDR);

[Keith]

HTTP_X_FORWARDED_FOR is rarely made available, plus it can easily be modified. Just an FYI.

[jumbo1]

Originally Posted by 0o0o0

Did anyone hear a please or thankyou? maybe I missed it.
lol

take it easy man, i said thanks, just review my last posting... r u the man who surfs through the post to make sure everyone's polite and gentle??

NabZ, that's what i needed!! getenv(HTTP_X_FORWARDED_FOR) now returns the same IP that whatismyip.com returns...

as for the fact that it is not always made available, i have no idea about it, but there should always be a way to get some information to distinguish a client from another... take google adsense for example... if u click on a google ad and then click again on another, google wont count that click and u wont be paid on it, coz the same "guy" or IP clicked on a google ad previously... if there wasnt a way to distinguish people ALL AROUND THE WORLD (and many are behind a proxy), google adsense would be easily crackable, and a guy behind a proxy would click on ads infinitely and generate lots of money by doing this...

thank you...

keith can u please clarify how HTTP_X_FORWARDED_FOR can be modified?

thanx again