php adding value to session

Question

I am trying to implement a 'shopping cart' where, if the 'Add to Cart' has been clicked, the respective item is either added to the cart or incremented by one if already present. However, the following code isn't working and giving me a "Cannot use a scalar value as an array" error. Any help would be highly appreciated.

if (isset($_POST['fan']) && ($_POST['fan']=="Add to Cart")) {
    if (($_SESSION['cart']['fan']==0) || (!isset($_SESSION['cart']['fan']))) {
      $_SESSION['cart']['fan']=1;
    } else {
      $_SESSION['cart']['fan']++;
    }
}

The code you posted won't produce the scalar error. Even with your undefined cart element, it will only produce an undefined index notice. You must have some other code that is causing the error. Find out which line it is and post it. — MrCode
– MrCode, Commented Oct 10, 2012 at 9:32

dweeves · Accepted Answer · 2012-10-10 09:21:54Z

1

i suppose you may have forgot to add something like this:

if (!isset($_SESSION['cart']))
{
  $_SESSION['cart']=array();
}

answered Oct 10, 2012 at 9:21

dweeves

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iLaYa ツ · Accepted Answer · 2012-10-10 09:23:36Z

0

You need to declare $_SESSION['cart'] as array() if it is not set,

$_SESSION['cart']=array();

answered Oct 10, 2012 at 9:23

iLaYa ツ

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