使用PHP检查两个键是否存在数组

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.

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;
    }

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!