Bob schrieb:
> I used to use the following to log specific errors:
> <?php
> $log = 'rejected';
> if (filesize($log) > 20000) unlink($log);
> $data = date('d-m-Y H:i:s')." [$fault]\r\n";
> error_log($data,3,$log);
> ?>
> But, this meant that sometimes there would only be a few errors shown, if the
> file had reached it's 20000 limit and deleted itself.
>
> So I created a rolling road log of a 100. This allows me to view trends
> easier. I'm not sure how efficient this is, or whether it would be suitable
> for high volume?
> <?php
> $log = 'rejected';
> $data = date('d-m-Y H:i:s')." [$fault]\r\n";
> if (file_exists($log))
> {
> $records = file($log);
> array_unshift($records,$data);
> if (count($records) > 100) array_pop($records);
> $fp = fopen($log,'w');
> foreach ($records as $item) fwrite($fp,$item);
> fclose($fp);
> }
> else
> {
> $fp = fopen($log,'w');
> fwrite($fp,$data);
> fclose($fp);
> }
> ?>
>
> Has anyone got a better method, or can improve it?
> Regards, Bob E.
>
>
>
>
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Hi Bob!
Of course there are many more ways of doing it.
To tell you the harsh truth: (I hope you can handle it ;) )
Loading a file into an array and using array shifting and than write
that array into a file and that for every (!) log action - that is
surely one of the worst. ;)
I have two other ways for you:
1)
if filesize of logfile exceeds 20k use fseek() to jump to position
filesize()-10k and write the rest into a new file.
delete old log and rename new file to log file name. This is the fastest.
I cut down to 10k so you do not have to do it too often.
If you want it a bit nicer you can start copying after finding a \n for
the first time.
But most times you only look at the tail - so nobody cares.
Another way is cycling files:
2)
If log reaches 10k rename it and start a new file with that name.
"rejected.log" and "rejected.older.log" can be of use. ;)
THe first is closer to what you tried but the second is far more performant.
HTH,
Patrick
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