Re: [PHP] periodic file writing error (fputs)
On Friday 06 August 2004 02:50, Sarah Gray wrote:
> I am having a periodic problem that I cannot duplicate and wonder if
> anyone has suggestions.
>
> Once a sale is completed a record is written to a log file on the
> server.
>
> $filename = $dir. "/". $logType."_".$today.".txt";
> $fp = fopen("$filename", "a+");
> fputs($fp, $logEntryStr);
> fclose($fp);
>
> The file is chmoded to 644.
>
> About 3 out of 600 times, the log file is not written to. The times
> of day this happens are not consistent, and as I mentioned, I cannot
> duplicate it when testing. I initially thought it was some kind of
> error on the server, but I am beginning to think it is in my code.
>
> Has anyone experienced anything like this or have any suggestions for
> how to troubleshoot this?
- Enable full error reporting for PHP.
- Incorporate some error checking code as per example in manual for fwrite().
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Re: [PHP] periodic file writing error (fputs)
From: "Sarah Gray" <[EMAIL PROTECTED]>
> Once a sale is completed a record is written to a log file on the
> server.
>
> $filename = $dir. "/". $logType."_".$today.".txt";
> $fp = fopen("$filename", "a+");
> fputs($fp, $logEntryStr);
> fclose($fp);
Consider this:
1. User A completes a transaction.
2. Script A reads the log file
3. User B completes a transaction
4. Script B read the log file
5. Script A write the new line to what was read in #2
6. Script B write the new line to what was read in #4
Now what's in the file? Only what Script B wrote.
http://us2.php.net/flock
---John Holmes...
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RE: [PHP] periodic file writing error (fputs)
[snip]
I am having a periodic problem that I cannot duplicate and wonder if
anyone has suggestions.
Once a sale is completed a record is written to a log file on the
server.
$filename = $dir. "/". $logType."_".$today.".txt";
$fp = fopen("$filename", "a+");
fputs($fp, $logEntryStr);
fclose($fp);
The file is chmoded to 644.
About 3 out of 600 times, the log file is not written to. The times
of day this happens are not consistent, and as I mentioned, I cannot
duplicate it when testing. I initially thought it was some kind of
error on the server, but I am beginning to think it is in my code.
Has anyone experienced anything like this or have any suggestions for
how to troubleshoot this?
[/snip]
How do you know that it is not being written to? Do the transactions
show up in a database or some other form? Is it possible to have
duplicate log entries? What is $today, a date stamp, time date stamp,
epoch time stamp?
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