Newbie help w/ sessions

ricroma

Hi,

I'm kind of new to php, and while I figured out most of the most common stuff, I have problems with sessions. So, first of all I apologize for my incompetence and ignorance, and please forgive me if I will not be completelly clear.
I have a 3 page website and in all the pages I have started a session.

1) Home page, nothing special;

2) Catalog page, where the items are shown;

3) sort of "cart" page, where all the items chosen by the user are shown.

Now, I have problems concerning this last step. I can't find a way to show ALL the items chosen, but only the last one... If you guys can help me it will be really appreciate!

Here's the code I'm struggling with, probably is all crap:

<?php 

$code = $_GET['code'];  //this is the item's code passed through the URL

$i=0; // setting a counter


while ($i < count($_SESSION[$i])) 
{

if (empty($_SESSION['$i']))

{
$_SESSION['$i'] = $code;
}

$i++;

}


// NOW THERE SHOULD BE A $_SESSION[$i] FOR EACH ITEM VISITED, RIGHT?


foreach ($_SESSION as $key => $val)
{
 echo "$val <br>";
}

All suggestions are welcome!

Ciao!

jazz_snob

Add a print_r($SESSION) statement at the end of your script and see what is actually in $SESSION.

ricroma

jazz_snob;10969643 wrote:
Add a print_r($SESSION) statement at the end of your script and see what is actually in $SESSION.

Did it. The result is an array with only one value, no matter how many items I pick. That's the result:

Array ( [$i] => ac06/br )

Of course that "ac06/br" is the $code values passed with the URL.

Thanks,

Ricroma

jazz_snob

Because you created an array where the index is a string "$i" when really you want an integer values for the index...do you see that in your code? I'm not actually sure how you're getting any values into $_SESSION...must be happening on another page?

ricroma

jazz_snob;10969657 wrote:
I'm not actually sure how you're getting any values into $_SESSION...must be happening on another page?

Umm... I may be wrong because my comprehension of how sessions work is close to complete ignorance, but I don't think that $SESSION get any values in previous pages, since the only time I use "$SESSION" is in this part of code.

Let me try to explain what I want to do:

1) the user picks item "x" on page "A" and the item's code is sent trough the URL to page "B";

2) page "B" displays item x and stores it as a $_SESSION value so it doesn't get lost; then the user goes back to page "A" and picks item "y";

3) now page B displays both item "x" and item "y". Of course the process can go on until the user wants to.

Hope this can help more than confuse...

Thanks again,

Ricroma

ricroma

So, I tried different solutions, and I finally came up with this:

for ($i=0; $i<=$_SESSION[$i]; $i++)
{
    if (isset($_SESSION[$i]['name']))
   {
     $i++;
   }
  else
   {
     $_SESSION[$i]['name']= $_POST['name'];
   }
}

print_r($_SESSION);

Now, this seems to do a decent job because this is the result of print_r:

Array ( [0] => Array ( [name] => shirt ) )

The problem is that... it seems that the $_SESSION[$i] array doesn't get stored!!!
When I try to call it on other pages it doesn't show up... I don't know why.

Can someone help?

THanks!

Ricroma

jazz_snob

You've created a 2-dimensional array for storage of your values in $_SESSION. Typically if I was going store multiple "name" values in an array I'd change the index to be

$_SESSION['name'][$i] where $i is an integer, so you end up with the array containing values like this:

$SESSION['name'][0] = 'foo'
$SESSION['name'][1] = 'bar'
etc...

How do you know $SESSION isn't holding onto values on other pages? Try print_r($SESSION) on them as well.

I think the iteration over $i is unnecessary but I'm not sure what you're trying to accomplish. When I append values to the end of an array I just use the following:

$_SESSION['name'][] = $someValue;

nancyd589

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