Hello Patrick,
Friday, July 22, 2005, 3:04:04 AM, you wrote:
PB> firstpage.php
PB> <a
PB> href="secondpage.php?prev=firstpage.php">second_page</a>
PB> secondpage.php
PB> You came from <?php echo
PB> $_REQUEST['prev']; ?>.
PB> Go there again? <a href="<?php echo
PB> $_REQUEST['prev']; ?>">yes</a>
Or, you could stash the value in a session. This
has the added advantage that, if the user needs to
resubmit a form due to errors (on a log-in form
for example), then "back" will get them to the
protected page they were trying to access, and not
one of their previous log-in attempts. So before
you go to the next page, you would do something
like...
// start PHP code segment
/**
* Add the current page to a history array stored
* in the current session, but only if the current
* page is not ALREADY the last page in the history
*/
function myHistory() {
if(!isset($_SESSION)) {
session_start();
}
if(isset($_SESSION['history'])) {
if(!is_array($_SESSION['history'])) {
unset($_SESSION['history'];
}
}
if(!isset($_SESSION['history'])) {
$_SESSION['history'] = array();
}
$last_page = count($_SESSION['history']) - 1;
if(
($last_page < 0)
||
( ($last_page >= 0)
&&
(
$_SESSION['history'][$last_page]
!=
$_SERVER['PHP_SELF']
)
)
) {
$_SESSION['history'][] = $_SERVER['PHP_SELF'];
}
}
// end PHP code segment
Yes, it's a more complex solution, especially if
you don't have sessions enabled. But it does give
you more control. Sort of a private browser
history just for your website.
Handy when you're using frames (which I avoid,
BTW) or when you want to auto-generate bread-crumb
navigation bars.
That said, the above is a bit of a simplification
of what I _really_ use, which is a history object,
with assorted functions to store and retrieve
histories, and a data structure to store not only
the URL, but a short descriptive name (to be used
for generating a visual history such as the
previously mentioned bread-crumb trail).
--
Best regards,
Gunther mailto:[EMAIL PROTECTED]
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