Error: Unable to execute code, syntax contains errors! Where is the question? In which place?

Question

PHP

Hello! Everyone's favorite tasks on arrays ...
The question is where did I make a mistake in the code? The problem was solved in two ways with the help of Google naturally ...

$basket = [
    [
      'position' => "Книга по php",
      'quantity' => 1,
    ],
    [
      'position' => "Мышь беспроводная",
      'quantity' => 12,
    ]
  ];
  countBasket($basket);
  function countBasket($all)
  {
    $sum = 0;
    foreach ($all as ['quantity' => $quantity]) {
      $sum += $quantity;
    }
    echo  $sum;
    return $sum;
  }

How not to change countBasket($basket); the error remains. I mean like this:

$basket = [
    [
      'position' => "Книга по php",
      'quantity' => 1,
    ],
    [
      'position' => "Мышь беспроводная",
      'quantity' => 12,
    ]
  ];
  
  function countBasket($all)
  {
    $sum = 0;
    foreach ($all as ['quantity' => $quantity]) {
      $sum += $quantity;
    }
    echo  $sum;
    return $sum;
  }
countBasket($basket);

Help me please.

Answer 1

foreach ($all as $item) {
    $sum += $item['quantity'];
}