使用php向数组添加新值

I have been trying to add a new value pair to an array called products.

This is my array before the loop:

"products": [
{
    "id": "050435",
    "name": "Test Product",
    "price": 10,
}
] 

This is my loop:

$item = [];
foreach ($products as $product) {
    $item['new_item'] = 'item_value';
}
$products[] = $item;

Now I need to do this as to obtain the 'item_value' I will need to work with the data inside this array to get this value which I can do later. However I get this as a result when I am trying to add this item to this array.

"products": [
  {
    "id": "050435",
    "name": "Test Product",
    "price": 10,
  },
  {
    "new_item": "item_value"
  }
]

I have tried array_merge and trying $products[0][] etc but I can't get this inside the products array. Any help will be great thanks. This is how I want it to be:

"products": [
{
    "id": "050435",
    "name": "Test Product",
    "price": 10,
    "new_item": "item_value"
},
]

It should be that simple:

$products[0]['new_item'] = 'item_value';

If you need this for every product in $products array then:

foreach ($products as $product) {
    $product['new_item'] = 'item_value';
}

If you want to insert new value to product array use this code.

foreach ($products as $product) {
    //$item['new_item'] = 'item_value';
    $product['new_item'] = 'item_value';
}

You need to loop through the original array of $products and add a new array-key to each $product.

$products = [
    [
        "id"=> "050435",
        "name"=> "Test Product",
        "price"=> 10
    ],[
        "id"=> "012345",
        "name"=> "Test Product 2",
        "price"=> 15
    ]
];

foreach ($products as $product) {
    $product['new_item'] = 'item_value';
}

echo "<pre>";
print_r($product);
echo "</pre>";