On Fri, Jul 22, 2011 at 10:44 AM, Florian Lemaitre
<florian.lemaitre@xxxxxxxxxxxxxxx> wrote:
> Hi !
>
> I'm developing my new website and I'm worried about concurrent file access.
> In fact, I want to suppress a maximum database interactions so I keep
> information in files with faster I/O than databases.
> But I'm worried by the fact that an error can occur when someone try to
> access a file being edited by a cron task.
>
> Does PHP do all the stuff itself or is there something to do about it ?
>
> PS: I only use file_get_contents, file_put_contentsand unlink on files.
>
> Best regards.
> Florian
>
With file_put_contents you send a flag to lock the file and avoid
concurrency problems, eg:
file_put_contents('/some/file', 'data', FILE_APPEND | LOCK_EX);
Regards,
Jonathan
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