Data present in multidimensional array are not displayed correctly - php

Question

I'm trying to get the values from a Query String and add them to an array inside of an array. The output Query String is something like:
add_to_cart.php?product_id=4&product_name=Pizza&quantity=1&additional_id[]=1&additional_quantity[]=3&additional_id[]=4&additional_quantity[]=5
I'm getting each additional_id and additional_quantity variables presents in the Query String with the code below. I compare each of the additional_id with the IDs that I have in database table additionals and insert all into an array. The following code exists in my file add_to_cart.php file:
if(isset($_SESSION['cart']))
{
while ($row = $stmt->fetch(PDO::FETCH_ASSOC))
{
extract($row);
$columns = array
(
'product_id_session' => $product_id_session,
'product_id' => $product_id,
'product_name' => $product_name,
'product_price' => $product_price,
'quantity' => $quantity,
'additionals' => array()
);
if(isset($_GET['additional_id']) && $_GET['additional_id'] != "")
{
foreach($_GET['additional_id'] as $additional => $value)
{
$additional_id = $value;
if(isset($_GET['additional_quantity'][$additional]))
{
$additional_quantity = $_GET['additional_quantity'][$additional];
if($additional_quantity <= 0 || $additional_quantity > 5)
{
$additional_quantity = null;
}
else
{
$sql2 = "SELECT additional_id, additional_name, additional_price FROM additionals WHERE additional_id LIKE '{$additional_id}'";
$stmt2 = $connection->prepare($sql2);
$stmt2->execute();
while ($row = $stmt2->fetch(PDO::FETCH_ASSOC))
{
extract($row);
$columns['additionals'][]['additional_id'] = $additional_id;
$columns['additionals'][]['additional_name'] = $additional_name;
$columns['additionals'][]['additional_price'] = $additional_price;
$columns['additionals'][]['additional_quantity'] = $additional_quantity;
}
}
}
}
}
$_SESSION['cart'][$product_id_session] = $columns;
}
header('Location: products.php?action=added&product_name=' . $product_name);
}
Once everything is added in the cart SESSION, in the cart.php page I'm trying to show the products with their selected additionals and quantities with:
foreach($_SESSION['cart'] as $product)
{
echo "<tr>";
echo "<td>{$product['product_name']}</td>";
echo "<td>${$product['product_price']}</td>";
echo "<td>{$product['quantity']}</td>";
echo "<td>";
foreach($product['additionals'] as $additional)
{
echo "<p>{$additional['additional_quantity']}x{$additional['additional_name']} - {$additional['additional_price']}</p>";
}
echo "</td>";
echo "</tr>";
}
But I'm doing something wrong, I think these two codes are not working properly.
My output is embarrassed, something like this:
Am I doing it by the right way? Maybe I'm not looping right with foreach, or the additionals are not being added with success? Sorry for the mistakes, I never worked with multidimensional arrays before. Is there a way to do what I am intending to? Thanks!

Answer 1

solution as per the comments-
Your issue is caused by $columns['additionals'][] as it is causing each value to being added as its own array. This is solved by added $additional as the array key -
while ($row = $stmt2->fetch(PDO::FETCH_ASSOC))
{
extract($row);
$columns['additionals'][$additional]['additional_id'] = $additional_id;
$columns['additionals'][$additional]['additional_name'] = $additional_name;
$columns['additionals'][$additional]['additional_price'] = $additional_price;
$columns['additionals'][$additional]['additional_quantity'] = $additional_quantity;
}
or you could also do-
while ($row = $stmt2->fetch(PDO::FETCH_ASSOC))
{
extract($row);
$columns['additionals'][] = array('additional_id' => $additional_id,
'additional_name' => $additional_name,
'additional_price' => $additional_price,
'additional_quantity' => $additional_quantity);
}