Re: When should I use gethostbyaddr () if I want to monitoring the users
| From: | Philip Hallstrom | Date: | Tue, 19 Feb 2002 20:14:44 +0000 |
| Subject: | Re: When should I use gethostbyaddr () if I want to monitoring the users | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-85429@lists.php.net to get a copy of this message | ||
Yes... you definately want to wait to check the domains until later.
gethostbyaddr() (or any dns lookup) can be extremely slow...
Also, you're doing it *every* time even for the same visitor... if you
waited until you were parsing the log files you could do it *once* per
visitor (by caching the results of the first lookup).
-p
On Tue, 19 Feb 2002, SED wrote:
> I'm using the gethostbyaddr() function in each webpage on my server to
> monitor the users. Today I noticed that it causes a very slow speed but
> before it was ok.
>
> Is it commonly bad choise to use it like I do?
> Should I rather check the host afterwards e.g. when I'm viewing the
> log-database?
>
> Regards,
> Sumarlidi Einar Dadason
>
> SED - Graphic Design
> ----------------------------------
> Tel. 4615501
> GSM 8960376
> E-mail sed@sed.is
> Website: www.sed.is
> ----------------------------------
>
>
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