Re: Most portable back button in php

Thanks Justin I'll have a go ;-) Henry "Justin French" <justin@indent.com.au> wrote in message news:B979548A.C6EF%justin@indent.com.au... > I have this code on one of my sites... it sits inthe config file, so every > page is able to establish their URL. > > For my site, the definition of URL is just the stuff after > http://www.domain.com/. > > > $script = $_SERVER['PHP_SELF']; > $script = eregi_replace('^/', '', $script); > $qs = $_SERVER['QUERY_STRING']; > $this_ref = base64_encode($script."?".$qs); > > > The result? $this_ref will look like dir/dir/file.php?getvar=foo if the > current URL is http://www.mysite.com/dir/dir/file.php?getvar=foo<_� > 2�. ���ݫ > > > The if I need to pass the referrer onto another script (in my case a login > procedure), I just do this: > > <A HREF="login.php?return_ref=<?=$this_ref?>">login here</a> > > > login.php passes $_GET['return_ref'] around in the URL through the login > form, the validation, the error messages, the password reminder script, and > all sorts of other stuff, and once the user is finally logged in, I can do > this: > > $return_ref = base64_decode($_GET['return_ref']); > > and supply them with: > > <A HREF="<?=$return_ref?>">Click here to continue</a> > > ... or better still, once they're logged in, I just: > > header("Location: {$return_ref}"); > > > If you wanted to do it for a full domain URL, then store your full domain as > a var $base_url, and prepend it to $this_ref > > $base_url = "http://www.mydomain.com"; // without > trailing slash > $script = $_SERVER['PHP_SELF']; > $qs = $_SERVER['QUERY_STRING']; > $this_ref = base64_encode($base_url.$script."?".$qs); > > > > The only thing this doesn't cover is pages with POST variables, but I > wouldn't want it to. > > > Justin French > > > > on 09/08/02 1:40 AM, Henry (henry@teacake.f9.co.uk) wrote: > > > I have an idea then. > > > > How can I best generate a full URL from PHP_SELF and other variables on the > > referrer page such that I can generate the back link on the page I get to > > even if the referrer page is on a different server? > > > > as an eample if I know that the page to go back to will be at > > http://www.myprimary.com/referrer.php and I generate a > > page at > > http://www.mysecondary.com/info.php I can ensure that > > there is the following > > html in place > > > > <a > > href="http://www.myprimary.com/referrer.php">go > > back</a> > > > > TIA > > > > Henry > > > > "Stas Maximov" <maximov@eircom.net> wrote in message > > news:008601c23eef$cc25f260$ec000064@nexus... > >> Yes, indeed. Thanks, Justin, I forget to mention this one. It works really > >> well on forums and comments, i.e. the cases when you do POSTs. The good > >> thing here is that you passing the whole URL (taking it from PHP_SELF), so > >> you save on the decision logic in the end. > >> > >> Regards, Stas > >> > >> ----- Original Message ----- > >> From: "Justin French" <justin@indent.com.au> > >> To: "Stas Maximov" <maximov@eircom.net>; "Henry" <henry@teacake.f9.co.uk> > >> Cc: "PHP General" <php-general@lists.php.net> > >> Sent: Thursday, August 08, 2002 4:03 PM > >> Subject: Re: [PHP] Most portable back button in php > >> > >> > >>> Just to add in some more ideas, you can always pass the referring script > >> to > >>> the second script manually... > >>> > >>> I do this when someone has to login, then return back to the original > > page > >>> they were on... I just get the URL + query string, base64_encode() it, > >> then > >>> pass it around in the URL or POST until i need it, then base64_decode() > > it > >>> and header("Location: ...") the user to the right page. > >>> > >>> Works really well, depending on your situation. > >>> > >>> > >>> Justin > >>> > >>> > >>> -- > >>> PHP General Mailing List (http://www.php.net/) > >>> To unsubscribe, visit: > >>> http://www.php.net/unsub.php > >>> > >>> > >> > > > > >