From: Colm Mac Cárthaigh (colmmacc at domain redbrick.dcu.ie)
Date: Thu 06 Sep 2001 - 16:03:41 IST
On Thu, Sep 06, 2001 at 03:52:45PM +0100, Donncha O Caoimh wrote:
> I have a feeling I know the answer to this already, "yes", but I'll ask
> anyway.
>
> If I have a file on a web server that's being served to clients and I
> open it from within a PHP script (or any language that uses the system
> fopen() command I suppose). I seek to a certain part of the file, write
> to the file there (replacing text already there), and it may take
> several seconds, then I close the file again.
>
> Question is, while I'm replacing the text in the middle of that file,
> will web users see the old file until I close() it at the end?
>
using raw IO or stdio functions no, they will see the contents as you
have modified them, regardless of the close(), though some writes may
not have been performed yet, depending on the stdio buffer, fflush()
will commit instantly any writes waiting to be performed.
nots ure how php goes about it
seeking will amost _never_ take several seconds btw, it's a very quick
process :)
-- ------------------------------------------------------------ colmmacc at domain redbrick.dcu.ie 2eb21625735b864be9a1dd3245a45ce8
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