Weird filemtime behaviour about vfsstream

[ludovicchabant]

Hey guess what, the stat function documentation says exactly what I suspected: results are cached :) However, I played around with clearstatcache, and it only solves some of the problems... (it does solve the above piece of code, at least).

The problem seems to be that vfsStreamFile::open() also updates the last modified time, which means that simply calling file_get_contents will mark the file modified... I wrote a patch and sent you a pull request (see issue 27).

[mikey179]

Seems that I relied on a reference implementation which is either wrong or simply different from how it is done in PHP. As stated in http://www.aquaphoenix.com/ref/gnu_c_library/libc_166.html

When an existing file is opened, its attribute change time and modification time fields are updated

I changed this so opening a file for reading changes the attribute change time only and not the modification time any more.

[ludovicchabant]

Yeah the wording in that page is a bit weird... but I don't think opening a file for read would update its modtime or that would break every caching or dependency based system out there (and incidentally, that's exactly what I was unit-testing when I found the bug :) ).