trouble with session

[Kicket]

<?php
session_start()
?>
<?php
session_register( bbox );

$bbox=$varXY;
echo $bbox;
echo &quot;<a href=my_url>here</a>&quot;;
?>

here is my code, unless i use session_register register the var $bbox, i can't use it in my next page &quot;my_url&quot;
is there a way that i don't need to register it?

$varXY is something user will submit using previews page.
the trouble is, if i use Session_register( bbox ), this variable will stick into explorer until u close explorer.
if some user tries to go back a page and change the variable
it won't work.

is there a way to unregister this variable when go back. or a way to avoid use session_register?

ff

 

[sleipnir214]

Variables must be registered to be available in a session. This is a feature.

Once you are done with a session variable, either issue session_unregister() against it, or set it so a known bogus value and have your code test that variable for the bogus value before attempting to use it. Want the best answers? Ask the best questions:

http://www.tuxedo.org/~esr/faqs/smart-questions.html

TANSTAAFL!

 

[Kicket]

i did
on the next page


//after i ve done using this variable i put
$bbox=&quot;&quot;;
session_unregister( bbox )

but if u click on go back
it will still has the old value in there...
why is that?

ff

 

[sleipnir214]

If you mean you are using the &quot;back&quot; button on your browser, chances are, the browser is displaying the page from memory. Does the value still exist if you click &quot;back&quot; and then refresh the page? Want the best answers? Ask the best questions:

http://www.tuxedo.org/~esr/faqs/smart-questions.html

TANSTAAFL!

 

[Kicket]

yep
what can i do to get rid of it?

ff

 

[Kicket]

wait never mind

ff