session unset not working

[MDanz]

 $itemlisted = $_POST['itemlisted'];

if ($itemlisted) {

unset($_SESSION['items'][$itemlisted]);
}

 

it should work i don't get it.  $itemlisted is 1... so it should delete [1] in the array.  any idea why it's not working?

[Psycho]

Are you even sure that the IF statement is resulting to TRUE? Your code is assuming values are present and you shouldn't use a variable as the condition of a comparison to check if the value is set or has a value.

 

What does the following output?

 

$itemlisted = (isset($_POST['itemlisted'])) ? trim($_POST['itemlisted']) : '';
if (!empty($itemlisted))
{
    echo "Posted value: {$itemlisted}<br />";
   echo "SESSION Before unset: <br />";
    print_r($_SESSION);
    unset($_SESSION['items'][$itemlisted]);
   echo "SESSION After unset: <br />";
    print_r($_SESSION);
}

[MDanz]

it prints this

 

Posted value: 1
SESSION Before unset:
Array ( [url] => http://www.eg.com/cart.php [items] => Array ( [4] => 13 [5] => 13 [6] => 13 [7] => 14 ) ) SESSION After unset:
Array ( [url] => http://www.eg.com/cart.php [items] => Array ( [4] => 13 [5] => 13 [6] => 13

 

i think i know... why is the Array not starting from

 [0]

?

[MDanz]

does anyone know why the array is not starting from zero.  i get this

 

Posted value: 1
SESSION Before unset:
Array ( [4] => 13 [5] => 13 [6] => 13 [7] => 14 ) SESSION After unset:
Array ( [4] => 13 [5] => 13 [6] => 13 [7] => 14 )

 

 

when i use this code

 

$itemlisted = (isset($_POST['itemlisted'])) ? trim($_POST['itemlisted']) : '';
if (!empty($itemlisted))
{
    echo "Posted value: {$itemlisted}<br />";
   echo "SESSION Before unset: <br />";
    print_r($itemid);
    unset($_SESSION['items'][$itemlisted]);
   echo "SESSION After unset: <br />";
    print_r($itemid);
}

[Pikachu2000]

We'd need to see how the array is being constructed.

[MDanz]

if(isset($_GET['id'])) {
$_SESSION['items'][]=$id; 

} 
$itemid = $_SESSION['items'];

[Pikachu2000]

On each subsequent submission, the index is added to the end of the array, so if the array isn't re-initialized, they will just keep incrementing.

[MDanz]

how do i re-initialize the array?

 

array_values i've tried

 

array_values($itemid);

that makes it start from zero...

 

but i don't know how to set it as a session?

 

 

[Pikachu2000]

$_SESSION['items'] = array(); will re-initialize it as an empty array. Without knowing more about your application, I don't know if it's appropriate to do so or not, though. You'll have to decide that.

[Psycho]

Echoin'g Pickachu's comment, it would be better to know what exactly you are doing, but this might work as a "quick fix" to reindex the values starting at 0.

$_SESSION['items'] = array_values($_SESSION['items']);