Check if array exist by two keys with PHP - php

Question

I'd like to check if array exist by two keys: id and type
This code just check by id:
if (isset($_POST['type'])) {
$type = $_POST['type'];
}
else {
$type = '';
}
if (array_key_exists($id, $_SESSION['cart'])) {
$_SESSION['cart'][$id]['quantity'] += $quantity;
} else {
$_SESSION['cart'][$id] = $line;
}
I have tried with this code but it doesn't work:
if (array_key_exists($id, $_SESSION['cart']) && array_key_exists($type, $_SESSION['cart'])) {
$_SESSION['cart'][$id]['quantity'] += $quantity;
} else {
$_SESSION['cart'][$id] = $line;
}
$_SESSION['cart'] is an array contains arrays of $line
$line = array(
'id' => $id,
'type' => $type,
'quantity' => $quantity,
'price' => $price,
'picture' => $dish->getPicture()->getWebPath(),
);
This is the output of $_SESSION['cart']:
As you see in th last array with id 55 and type "french bred" , what I'd like to do is to check if th user chose the same product but a with different type so insert new line else if the same product and the same type so just update quantity.

Answer 1

Something like this should do, however the question is too vague and too little code is shown for me to properly understand your problem
$lineExists = false;
foreach($_SESSION['cart'] as $index => $line){
if($line['id'] === $id)
{
$_SESSION['cart'][$index]['quantity'] += $quantity;
$lineExists = true;
}
}
if(!$lineExists)
{
$_SESSION['cart'][] = $newLine;
}

Answer 2

If you want to check if type and id exists then you should do something like this
if (array_key_exists('id', $_SESSION['cart']) && array_key_exists('type', $_SESSION['cart'])) {
// stuff here..
}
if $id is the value of the key id so 'id' => 5 then you should check like this:
if ($_SESSION['cart']['type'] == $id) {
// stuff here
}
Hope this somewhat helps you further!