Robinson, Matthew wrote:
> I use this code, Not all my own, some from the php manual (probably
> most of it in fact) I lock the file as filename.lock so that I can muck
> about with it completely and then unlock the .lock and remove it.
>
> M
>
> function LockFile($file)
> {
>
> $LockFile = $file . ".lock"; # Lock the file
> $lf = fopen ($LockFile, "wx");
>
> while ($lf === FALSE && $i++ < 20)
> {
> clearstatcache();
> usleep(rand(5,85));
> $lf = @fopen ($LockFile, 'x');
How come you use "wx" up there, and just 'x' here?
Is there some reason for that?
One may (or may not) want to consider a mechanism for throwing out really
old lock files, since it's possible your PHP script or application would
eventually fail to remove a lock file... Or not, depending on how you
code the rest of it.
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