Updating previous Session Array Laravel

Question

I have an issue on how can I update my Previous array ? What currently happening to my code is its just adding new session array instead of updating the declared key here's my code:

foreach ($items_updated as $key => $added)
{
    if ($id == $added['item_id'])
    {
        $newquantity = $added['item_quantity'] - 1;
        $update = array(
            'item_id' => $items['item_id'],
            'item_quantity' =>  $newquantity,
        );
    }
}

Session::push('items', $updated);

Solution 1

$items = Session::get('items', []);

foreach ($items as &$item) {
    if ($item['item_id'] == $id) {
        $item['item_quantity']--;
    }
}

Session::set('items', $items);

Solution 2

If you have nested arrays inside your session array. You can use the following way to update the session: $session()->put('user.age',$age);

Example

Supppose you have following array structure inside your session

$user = [
     "name" => "Joe",
     "age"  => 23
]

session()->put('user',$user);

//updating the age in session
session()->put('user.age',49);

if your session array is n-arrays deep then use the dot (.) followed by key names to reach to the nth value or array, like session->put('user.comments.likes',$likes)

Comments

[Martney Acha]

What would I need is saving again with its same Item_Id but with new Quantity so I think Session::forget('key') is not the solution.

[Martney Acha]

It works Thank you Joseph!!! but what does $items as &$item ? I want to understand it thank you.

[Joseph Silber]

The ampersand means that it's a reference to the individual item array, not a copy. If you were to do $items as $item, the $item variable would hold a copy of the item in the $items array, and decreasing its item_quantity property would have no effect on the item in the $items array.