URL of Referring html Document

[Peter]

Hi there, I am using this code to retrieve the current URL:

function selfURL() {
$s = empty($_SERVER["HTTPS"]) ? ''
: ($_SERVER["HTTPS"] == "on") ? "s"
: "";
$protocol = strleft(strtolo wer($_SERVER["SERVER_PROTOCO L"]), "/").$s;
$port = ($_SERVER["SERVER_POR T"] == "80") ? ""
: (":".$_SERVE R["SERVER_POR T"]);
return
$protocol."://".$_SERVER['SERVER_NAME'].$port.$_SERVER['REQUEST_URI'];
}
function strleft($s1, $s2) {
return substr($s1, 0, strpos($s1, $s2));
}

which returns the URL of the current PHP script.

But, I would like it to return the URL of the html page that preceeded
this script.

I mean, I have a some html pages with some photos. I have a form that
allows users to enter an email address that will then send the link of
that html page to the email address used.

When I use the above it only shows the address of the page that
executed the command, not the original html document.

Can this even be done?

Thanks,

Peter.

[Toby Inkster]

Re: URL of Referring html Document

Peter wrote:
[color=blue]
> But, I would like it to return the URL of the html page that preceeded
> this script.[/color]

Look at $_SERVER['HTTP_REFERER'] (sic). But you can't trust it because it
comes from the browser, and not all browsers will set it.

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact

[Peter]

Re: URL of Referring html Document

Nice one, thanks a lot. I'll check this out.

Pete.

[Peter]

Re: URL of Referring html Document

Yep, works well, thanks. I tested on IE6, FF1.0.4 and Opera8.01 and
they all handle the HTTP_REFERER function.

[NC]

Re: URL of Referring html Document

Peter wrote:[color=blue]
>
> I am using this code to retrieve the current URL:
>
> function selfURL() {[/color]
....[color=blue]
> }
>
> which returns the URL of the current PHP script.[/color]

Why? What's wrong with $_SERVER['SCRIPT_URI']?
[color=blue]
> But, I would like it to return the URL of the html page
> that preceeded this script.[/color]

That would be $_SERVER['HTTP_REFERER'].

Cheers,
NC

[Gordon Burditt]

Re: URL of Referring html Document

>Yep, works well, thanks. I tested on IE6, FF1.0.4 and Opera8.01 and[color=blue]
>they all handle the HTTP_REFERER function.[/color]

Test it with firewalls in operation and you'll notice that HTTP_REFERER
can be deleted or faked. Further, there's a good chance a Windows
user won't be able to turn off that operation in the firewall even
if they wanted to.

Gordon L. Burditt

[Peter]

Re: URL of Referring html Document

Hi NC, I tried the $_SERVER['SCRIPT_URI'] but it returns NULL. E.g I
have an html page with a form like this:

<form action="refer.p hp" method="post">
<p>First Name</br><input type="text" name="name" size="20"
maxlength="40"/></p>
<p><input type="submit" name="submit" value="Send Message"/></p>
</form>

And then this is my php code:

<?php
$refer = $_SERVER['SCRIPT_URI'];
echo $refer;
?>

But it comes back blank.

I would like it to return the full html URL like the HTTP_REFERER does
but seems that it is not to be relied on.

I think it will be best to use a hidden form on each page that contains
the URL and the just get this.... for reliability.

It's just that I have to then edit each page individually to add the
hidden value.

Thanks a lot though!

Pete.

[Toby Inkster]

Re: URL of Referring html Document

Peter wrote:
[color=blue]
> Yep, works well, thanks. I tested on IE6, FF1.0.4 and Opera8.01 and
> they all handle the HTTP_REFERER function.[/color]

Opera > Quick Prefs (F12) > Enable referer logging > Disable

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact