delete an array in list array in laravel session - php

Question

I have a session to save cart info in laravel like this:
$item = [
'id' => 1,
'product_id' => 11
];
$item2 = [
'id' => 2,
'product_id' => 22
];
\Session::push('cart', $item);
\Session::push('cart', $item2);
Now I want delete an Item in array for $id=1:
foreach(\Session::get('cart') as $cart)
{
if($id==$cart['id'])
{
echo 'done';
\Session::forget('cart.' . $i);
}
$i++;
}
It print done but it can not delete that item in list.
what is my wrong?
also I try \Session::pull('card.id', $id);
EDIT
with dd(\Session::get('cart'))
array:4 [▼
2 => array:5 [▼
"id" => 1
"product_id" => "11"
]
3 => array:5 [▶]
4 => array:5 [▶]
5 => array:5 [▶]
]
So I try change the code to this:
foreach(\Session::get('cart') as $key->$cart)
{
if($id==$cart['id'])
{
\Session::forget('cart.' . $key);
}
}
But It can not delete too

Answer 1

I'm pretty sure that cart.{$id} is not a session key, as you're only explicitly setting cart, which is an array. This should work for you instead:
$id = 1; // set from request, etc.
$cartSession = session()->get("cart");
foreach($cartSession AS $index => $cart){
if($index == $id){
unset($cartSession[$index]);
}
}
session()->put("cart", $cartSession);
Essentially, you pull the session to a variable (array), loop that and unset where $index matches $id, then set the remaining array back as "cart".
Note: I'm using session() instead of \Session, which is just Facade vs global function; shouldn't make a difference on which you use, unless below a certain Laravel version (< 5.0 I believe)