Re: [phplib] PHPLib and searchengines.. From: jeroen <email protected>
Date: 07/14/00

>Does anyone have any experience with PHPlib and search engines?

Yes.

The problem is PHPLIB *always* gives the session_id in the *first* page of a
session.
To get rid of your session_id, implement the change I suggested about 1-2
week(s) ago on this list.

Another problem with this is that visitors that bookmark their first page
also have a session_id bookmarked.

>Check with getenv("HTTP_AGENT") if its an browser or something else.
>if browser: display page with page_open (....)
>if something else: display standard page with kewords and metatags and
exit, or maybe disable cookie fallback for this searchengines...

Works most of the time, but some search engines use different spiders (some
even as a true mozilla browser) to check if you do not fooling them. So how
do you know for sure it is not a spider?
There's lots of (deeper) info about how to do this (cloaking) etc. on e.g.
http://www.spiderhunter.com/.

Greetings
Jeroen.

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
Jeroen Laarhoven, Zwolle, Netherlands
email: jeroen <email protected>
www: http://jeroen.polder.net
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

----- Original Message -----
From: Maurice Jumelet
To: phplib <email protected>
Sent: vrijdag 14 juli 2000 9:54
Subject: [phplib] PHPLib and searchengines..

Hi all,

Does anyone have any experience with PHPlib and search engines?
If I for example look at altavista.com and search for NOXX

the third(!) link says:
http://www.noxx.com/index.php3?Noxx_Sess=05438c08077abe7ad881f22946c6a0ce

As you can see, the session ID is in the link, we dont want that! Altavista
does not support cookies :-<

What worries me more is if you telnet to port 80 of NOXX.com and type
GET /index.php3 HTTP/1.1
Host: noxx.com

You will get:

HTTP/1.1 302 Moved Temporarily
Date: Fri, 14 Jul 2000 07:47:27 GMT
Server: Apache/1.3.3
X-Powered-By: PHP/3.0.16
Set-Cookie: Noxx_Sess=572c80457a0f582a4b123f310dea4793; expires=Sunday,
13-Aug-0
0 07:47:33 GMT; path=/
Location:
http://noxx.com/index.php3?Noxx_Sess=572c80457a0f582a4b123f310dea4793
Transfer-Encoding: chunked
Content-Type: text/html

<THATS IT EMPTY PAGE HERE>
of course a modern (HTTP version 1.1>) browser jumps to the location url.

Does this mean that some search engines will see nothing more than that?
They should understand :
Location:
http://noxx.com/index.php3?Noxx_Sess=572c80457a0f582a4b123f310dea4793
But do all (or most) search engines do that? I doubt it.

The only solutions I see is;
Check with getenv("HTTP_AGENT") if its an browser or something else.
if browser: display page with page_open (....)
if something else: display standard page with kewords and metatags and exit,
or maybe disable cookie fallback for this searchengines...

You comment please...
Maurice
NOXX.com

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