PHP Accessing an item in an array - php

Question

I have the following array:
Cart Object
(
[event_list] => Array
(
[15] => stdClass Object
(
[event_id] => 15
[event_name] => North Pole Express 2014
[event_date] => 2014-12-06
[event_time] => 10:40:00
[event_ort_id] => 1
[ort_name] => Tanfield Railway
[ort_city] => Newcastle upon Tyne
[event_order_limit] => 0
[event_use_alt] =>
)
[14] => stdClass Object
(
[event_id] => 14
[event_name] => North Pole Express 2014
[event_date] => 2014-11-30
[event_time] => 10:40:00
[event_ort_id] => 1
[ort_name] => Tanfield Railway
[ort_city] => Newcastle upon Tyne
[event_order_limit] => 0
[event_use_alt] =>
)
[13] => stdClass Object
(
[event_id] => 13
[event_name] => North Pole Express 2014
[event_date] => 2014-11-29
[event_time] => 10:40:00
[event_ort_id] => 1
[ort_name] => Tanfield Railway
[ort_city] => Newcastle upon Tyne
[event_order_limit] => 0
[event_use_alt] =>
)
)
[cat_list] => Array
(
[138] => stdClass Object
(
[cat_id] => 138
[category_event_id] => 15
[cat_name] => Child - 4:00 pm
[cat_price] => 12.00
[cat_numbering] => none
)
[120] => stdClass Object
(
[cat_id] => 120
[category_event_id] => 14
[cat_name] => Child - 4:00 pm
[cat_price] => 12.00
[cat_numbering] => none
)
[102] => stdClass Object
(
[cat_id] => 102
[category_event_id] => 13
[cat_name] => Child - 4:00 pm
[cat_price] => 12.00
[cat_numbering] => none
)
)
[disc_list] => Array
(
)
[items] => Array
(
[4] => PlaceItem Object
(
[id] => 4
[cart] => Cart Object
*RECURSION*
[event_id] => 14
[category_id] => 120
[seats] => Array
(
[26151] => stdClass Object
(
[seat_id] => 26151
[seat_row_nr] => 0
[seat_nr] => 0
[seat_ts] => 1388769219
[discount_id] => 0
)
)
[ts] =>
[created] => 2014-01-03T16:43:39+00:00
[expired] =>
)
)
[ts] => 1388769219
)
I need to be able to access the 'Items' Key.
However everything I have tried so far has failed. I suspect I am missing something really obvious.
What would be the best way to access these items?

Answer 1

Cart is not an array, it's an Object.
$cart = new Cart();
$cart->items; // <-- this is an array (of PlaceItems)

Answer 2

Since $cart is an object you need to use object notation to access it, the arrays are underneath that:
forach ($cart->items as $key=>$value) {
//...
}
Update from your comment:
$items=$_SESSION['_SMART_cart']->items;
foreach ($items as $key=>$value) {
//...
}