On Thursday, October 30, 2003, at 10:41 AM, Ivan Rodriguez wrote:
Ok, But if the REMOTE_ADDR is part of the client and it gives back a PHP
variable to it, it is not possible to do the same with the MAC address.
IP addresses are machine identifiers in IP, so when someone makes an http connection to you, you two establish a TCP/IP session and thus you need to know the remote server IP address to make it work at all.
MAC addresses are part of the lower level ethernet protocol, and serve as a way of direct neighbors (folks on the same ethernet segment) to know who each other are. Thus, when you have a connection that crosses any sort of network routing device (anything that does more than simply forward packets), the MAC address does not get propogated. This is simply 'The Way Things Work' (tm), and their is no changing it.
Of course a machine knows it's own MAC and a browser can set any header field it want, but deciding what to send is up to the browser, not up to PHP. I don't know of any browser that sends it's MAC address, but regardless that is something that's up to the browser vendors, not PHP.
We understand what you are trying to do and you can't do it.
George
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