> I was wondering if there is a way in PHP that you can determine the IP
> address?  I am wondering because I am developing a simple web based
> program (in php) for use in a hospital setting and I want to do some
> checks to make sure that the program is not being run from a computer
> outside of the hospital.  Instead of having user names and passwords, I
> thought it would be eaiser if I just checked the IP address, especially
> since this is not a program that really has to be secure, but I would
> like to prevent just anyone from using it. Is this possible with php?
> Thanks,
>     Andrew V. Romero

Yes, you can get it from the webserver environment - there's a section in
the Php manual about this here:

'Environment variables' is the section you want


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