session and url

ahchew1413

hello, i have some problem to do with session and url...here is my code..

//try.php
<?
session_start();
session_register("num");
num=0;
?>
<html><head>.....
<a href="link.php?num=2">try to change value</a>
......</html>

//link.php
<?
session_start();
?>
<html><head>......
<? echo "The value of num is : $num"; ?>
</body></html>

with this method, the value of the session variable did not change...please show me the correct way to do it....
(i try to avoid using hidden value)

thanks for reading and answering
ahchew1413

Rayn

Well from the looks of the code you dont need to add the sessions function since in the link.php the new number is not stored... so this would make $num always equal to 0...

you could always just place in the link.php

if (!$num) {
  $num=0;
}

bladx

First of all, I think you need to add a '$' sign in front of the num=0; line ... since it is supposed to be a variable.

To get the value from a passed url like you are doing, you should use $_GET[num] and assign that value to the session variable $num.

ahchew1413

thanks, i will try it ....i hope my poor question did not bother u all...

ahchew1413

Rayn

Originally posted by ahchew1413
thanks, i will try it ....i hope my poor question did not bother u all...

ahchew1413

There are no poor questions, only poor answers