Setting File Permissions on Windows

[Anon]

Hello,

I'm new to PHP and am presently attempting the simplest of programs. What I need is, for the PHP script to change the permissions of a data file in my directory to world-write and change it back to read-only after modifying the data file. Is it possible to do this for PHP running on a Windows machine?

I understand I would use chmod for UNIX. Is there a Windows equivalent that would work?

Would greatly appreciate any help with this.
Thanks,
Karthik

[Anon]

From the manual:

Description
int chmod(string filename, int mode);
...
Note: This function does not work on Windows systems

You're out of luck on Windows, it seems. Note that depending on the
underlying filesystem, the volume may not even have any concept
of user permissions.

OTOH, I suppose nothing is preventing you from calling

exec("attrib -r $myfile");

and

exec("attrib +r $myfile");

I'm not sure what this buys you--what kind of write-access from others
are you trying to guard against?