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');
}
if ($lf !== False)
{
return array ($lf,$LockFile);
} else {
return FALSE;
}
}
###############################
#
# UnLockFile()
#
function UnLockFile($LockArray)
{
list($lf, $LockFile) = $LockArray;
fclose($lf);
unlink($LockFile);
}
-----Original Message-----
From: Michael Sims [mailto:michaels@xxxxxxxxxxxxxx]
Sent: 17 December 2004 15:28
To: php-general
Subject: RE: File Locking during *other* file operations
Gerard Samuel wrote:
> Im talking about file locking during deleting, and moving files.
> Is it possible to perform file locking for these file operations?
Yes, have your scripts attempt to lock a separate lock file before
performing deleting or moving operations.
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