RE: [PHP] How to make sure that the target file to read is not under writing by others?

On Wed, 2009-08-19 at 11:55 +0200, Arno Kuhl wrote: > -----Original Message----- > From: Dengxule [mailto:dengxule@gmail.com] > Sent: 19 August 2009 09:56 AM > To: Php Maillist > Subject: [PHP] How to make sure that the target file to read is not under > writing by others? > > Hi everyone: > > I have a crontab command to execuate my php-script every half an hour. > > The mission of the php-script is to open a file(log file), examine it. > > The target file(log file) is transported to local every half an hour. > > I've no idea how much time it will costs and on the other hand, i want to > make sure the file i'm openning is Completely Written. > > Any instruction will be grateful. > > > PS: I've made a test. My php-script just "fopen" a local file being > transported in, and the "fopen" returns no FALSE value but a resource. > > > Dengxule > 2009/08/19 > ---------------- > > Check the timestamp of the log file. Alternatively you can have a log > control file that is updated by the program transferring the log file only > when the transfer is completed, and work on that. > > Cheers > Arno > > The log control file wouldn't work, as how would you know when to open the control file?! Thanks, Ash http://www.ashleysheridan.co.uk