How do I log who links away from me?

If I have a link from my site A to someone else's site B, How can I
determine who has got to site B through my link on site A? This would
be without any co-operation from site B, by the way.

BB
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Big Bill wrote:

If I have a link from my site A to someone else's site B, How can I
determine who has got to site B through my link on site A? This would
be without any co-operation from site B, by the way.

By using a redirection script, maybe:

<a href="http://siteB.invalid/" onClick="gotoB()">goto B</a>

Exact measurement is difficult but it will give you an idea.

gotoB must be something that is hard to get the URL to siteB from, and must
call a cgi script on your site that does a redirect to the actual site.

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Big Bill wrote:

If I have a link from my site A to someone else's site B, How can I
determine who has got to site B through my link on site A? This would
be without any co-operation from site B, by the way.

You'd need to log it via scripting.

There's a couple of ways to do this:

<a href="/redirect.php?url=www.domain.com">text</a>
<a href="/redirect.php?id=1">text</a>

In the first example above we just redirect to the domain passed in
after logging it. In the second example we pass an id number which is
then looked up in the database (or even stored in the script) and then
redirect to the appropriate url after logging it.

A second approach is like this:

<a href="http://www.domain.com" onclick="foo(this); return
false;">text</a>

and then the "foo" function would look something like this:

function foo(a) {
window.location = "/redirect.php?url=" + escape(a.href);
}

This preserves the direct link to the other site for search engines but
invokes the onclick event which sends the user first to our redirect
script for logging purposes. If they don't have javascript then they'll
still be redirected but there won't be any logging.

Using the "id" idea you could do it like this in javascript instead:

<a href="http://www.domain.com" onclick="foo(1); return
false;">text</a>

function foo(id) {
window.location = "/redirect.php?id=" + id;
}

--
Chris Hope | www.electrictoolbox.com | www.linuxcdmall.com

On Fri, 10 Jun 2005 11:15:34 +1200, Chris Hope
<blackhole (AT) electrictoolbox (DOT) com> wrote:

Big Bill wrote:

If I have a link from my site A to someone else's site B, How can I
determine who has got to site B through my link on site A? This would
be without any co-operation from site B, by the way.

You'd need to log it via scripting.

There's a couple of ways to do this:

a href="/redirect.php?url=www.domain.com">text</a
a href="/redirect.php?id=1">text</a

In the first example above we just redirect to the domain passed in
after logging it. In the second example we pass an id number which is
then looked up in the database (or even stored in the script) and then
redirect to the appropriate url after logging it.

A second approach is like this:

a href="http://www.domain.com" onclick="foo(this); return
false;">text</a

and then the "foo" function would look something like this:

function foo(a) {
window.location = "/redirect.php?url=" + escape(a.href);
}

This preserves the direct link to the other site for search engines but
invokes the onclick event which sends the user first to our redirect
script for logging purposes. If they don't have javascript then they'll
still be redirected but there won't be any logging.

Using the "id" idea you could do it like this in javascript instead:

a href="http://www.domain.com" onclick="foo(1); return
false;">text</a

function foo(id) {
window.location = "/redirect.php?id=" + id;
}

Thanks Chris I don't know if I can run php. I'll ask.

BB
--
www.kruse.co.uk/ seo (AT) kruse (DOT) demon.co.uk
seo that watches the river flow...
--

Big Bill wrote:

On Fri, 10 Jun 2005 11:15:34 +1200, Chris Hope
blackhole (AT) electrictoolbox (DOT) com> wrote:

Big Bill wrote:

If I have a link from my site A to someone else's site B, How can I
determine who has got to site B through my link on site A? This
would be without any co-operation from site B, by the way.

You'd need to log it via scripting.

There's a couple of ways to do this:

a href="/redirect.php?url=www.domain.com">text</a
a href="/redirect.php?id=1">text</a

In the first example above we just redirect to the domain passed in
after logging it. In the second example we pass an id number which is
then looked up in the database (or even stored in the script) and then
redirect to the appropriate url after logging it.

A second approach is like this:

a href="http://www.domain.com" onclick="foo(this); return
false;">text</a

and then the "foo" function would look something like this:

function foo(a) {
window.location = "/redirect.php?url=" + escape(a.href);
}

This preserves the direct link to the other site for search engines
but invokes the onclick event which sends the user first to our
redirect script for logging purposes. If they don't have javascript
then they'll still be redirected but there won't be any logging.

Using the "id" idea you could do it like this in javascript instead:

a href="http://www.domain.com" onclick="foo(1); return
false;">text</a

function foo(id) {
window.location = "/redirect.php?id=" + id;
}

Thanks Chris I don't know if I can run php. I'll ask.

Doesn't have to be php - I just needed some sort of extension in my
filenames You could use asp, perl or whatever you are comfortable /
able to use.

--
Chris Hope | www.electrictoolbox.com | www.linuxcdmall.com

On Fri, 10 Jun 2005 17:05:44 +1200, Chris Hope
<blackhole (AT) electrictoolbox (DOT) com> wrote:

Thanks Chris I don't know if I can run php. I'll ask.

Doesn't have to be php - I just needed some sort of extension in my
filenames You could use asp, perl or whatever you are comfortable /
able to use.

I'm comfortable with none of them actually, just don't have time to
learn. So I may be getting one of you guys to do me a script some day.

BB
--
www.kruse.co.uk/ seo (AT) kruse (DOT) demon.co.uk
seo that watches the river flow...
--