Change value of session variable by clicking href

[sunnyboy@europe.com]

Hi

Like to change the value of a session variable by clicking a link

------------------------------
<?php
session_start() ;
session_registe r("cat");
?>
<a href="index.php " onMousedown=<? $_SESSION['cat']=1; ?>Set cat to
1</a>
<a href="index.php " onMousedown=<? $_SESSION['cat']=2; ?>Set cat to
1</a>
-----------------------------

Any ideas why this is not working and how I could do it?

Cheers
Sunnyboy

[Janwillem Borleffs]

Re: Change value of session variable by clicking href

sunnyboy@europe .com wrote:[color=blue]
> Any ideas why this is not working and how I could do it?
>[/color]

You are making the mistake to mix client side (javascript) and server side
(PHP). Consider the following revision:

<?php
session_start() ;

if (isset($_GET['cat'])) {
$_SESSION['cat'] = $_GET['cat'];
}
print isset($_SESSION['cat']) ? "cat is {$_SESSION['cat']}" : 'cat is not
set<br />';
?>
<a href="index.php ?cat=1">Set cat to1</a>
<a href="index.php ?cat=2">Set cat to 2</a>


JW

[Drakazz]

Re: Change value of session variable by clicking href

Hmm, what you are trying to do is to control php directly through
javascript. it doesn't work that way...
Here is an example that would work:

<?php
session_start() ;
if ( isset($_GET['cat']) ) { $_SESSION['cat'] = $_GET['cat'];
}
else {
$_SESSION['cat']=0;
}
?>
<a href="index.php ?cat=1">et cat to 1</a>
<a href="index.php ?cat=2">et cat to 2</a>
Cat is : <?php echo $_SESSION['cat']; ?>