How to make sure that the target file to read is not under writing by others?
| From: | Dengxule | Date: | Wed, 19 Aug 2009 07:55:39 +0000 |
| Subject: | How to make sure that the target file to read is not under writing by others? | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-296953@lists.php.net to get a copy of this message | ||
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