Question

I get a FORM POST and on the button pressed (submitted) there is a value (primary key) of the item in the database ($artid).

For each of these POSTs I try and add a new object value into an array mapped to a key set by $artid, so it should be unique. The array is added to a $_SESSION to get the same array out each time.

The first object is added fine, but other objects just overwrites the second position in the array. I need it to continue to grow.

Code:

if (!isset($_SESSION['itemArray'])) {
    ...
    $cartArr = array();
    $bookitem = new BookItem($artid, $qty, $price);
    $cartArr[$artid] = $bookitem;

    $_SESSION['itemArray'] = $cartArr;

    foreach($cartArr as $key => $obj) { ....   }
}
else {
    $cartArr = $_SESSION['itemArray'];
    if (array_key_exists($artid, $cartArr)) {
        $cartArr[$artid]->quantity = $qty; 
    }
    else {
        $bookitem = new BookItem($artid, $qty, $price);
        $cartArr[$artid] = $bookitem;
    }
    foreach($cartArr as $key => $obj) { ...   } 
}

Thanks in advance for any help!

Answer 1

It doesn’t look like your setting the Session array back once you add the new element. So the next time the page loads the new value wasn’t saved.

You have 2 options:

1) after your foreach set $_SESSION['itemArray'] = $cartArr; this will save any changes (such as adding a new element) in session.

2) Assign $cartArrto be a reference to $_SESSION['itemArray'] so that any changes made to $cartArr are actually made to $_SESSION['itemArray'] You would do this by $cartArr =& $_SESSION['itemArray']; right after your else