Hi Victor,
On 15/02/13 12:43, Victor Berchet wrote:
On 02/14/2013 03:03 PM, Ivan Enderlin @ Hoa wrote:
Hi internal,
A missing feature in PHP is a file system watcher/monitoring
available for almost all platforms. On Linux, we have inotify
(available in PHP through pecl/inotify), on Mac OS X, we have
/dev/fsevents (not available in PHP, since we need ioctl to do that
in pure PHP —and sudo—, no C extension needed), on FreeBSD, we have
FAM, and on Windows, we have FileSystemWatcher in .NET. All major
platforms have a solution ready to use.
By now, if we didn't use these solutions, we should use a finder
(thanks to RecursiveIteratorIterator and DirectoryIterator in SPL)
that runs every n seconds and compute a diff with the previous run.
This solution works fine for a small set of files but it can slow for
a big one. This is just a tricky solution, not a proper one.
Possible domains where it is needed: test, CI, log, file transfering,
security etc.
Is it possible to have such a feature landing in PHP (core if karma
allows it)? or do you want such a feature?
Best regards :-).
Ivan,
Everzet has started to build a client side solution[1]
Hopefuly he will have time to update the PR with what is remaining to
do soon[2]
I have read your conversation on Twitter. Everzet uses inotify or a
recursiveiterator as a fallback, as suggested in my first mail, but this
cannot be extended to FSEvents, FAM etc. A solution in pure PHP is not
possible for technical reasons (we need ioctl to read from
/dev/fsevents, or we need a low-level C program for Windows, BSD etc.).
That's my point here :-).
Of course, “tricky” solutions exist on the Web, like the one proposed by
Everzet. I did one and you can find many others, but they are
“incomplete” or “unefficient” most of the times (note the quotes here,
it depends of the context of use).
Cheers.
--
Ivan Enderlin
Developer of Hoa
http://hoa-project.net/
PhD. student at DISC/Femto-ST (Vesontio) and INRIA (Cassis)
http://disc.univ-fcomte.fr/ and http://www.inria.fr/
Member of HTML and WebApps Working Group of W3C
http://w3.org/
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