How does PHP access client files? What should I do?

How does PHP access client files? I made a small program for file statistics, and now the local test is okay, but I want to provide it to the client. what should I do? For example, if you get an IP address through $ _ SERVER ['remote _ ADDR '] and then access it through & quot ;\\ ip \ C: \ WINDOWS & quot? In addition, how does PHP access client files?
I made a small program for file statistics, and now the local test is okay, but I want to provide it to the client. what should I do?
For example, if you get an IP address through $ _ SERVER ['remote _ ADDR '] and then access it like "\ ip \ C: \ WINDOWS? The other question is, will IE block such access?

------ Solution --------------------
Php is the server language ....
------ Solution --------------------
This is irrelevant to the browser. If you are in a LAN and the security settings of the client are minimized. Maybe you can try it.

As long as it is in the LAN, there are actually many means to achieve
The Internet is free of discussion.
------ Solution --------------------
Because YouUnable to access the client's machine through the client's browser

Of course, some people can, that is, hackers and virus makers.
------ Solution --------------------
It is impossible to pass the internet. of course, it is a normal way.
------ Solution --------------------
Discussion

Reference:
It is impossible to pass the internet. of course, it is a normal way.

What does an abnormal route mean?