Question 8238 in PHP Versions Question posted in
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PHP insert $key => $value into an array – PHP Versions

I have a programming assignment to add values to a PHP array after I validate that their either ints, floats, or strings.

I need to take the contents of the $products array and only insert them into the $inventory array if the data meets those conditions.

This is my source array:

$products = [
    [

        'item_number' => 15678,
        'description' => 'Tophat',
        'size' => 'small',
        'shelf' => 5,
        'aisle' => 12,
        'quantity' => 10,
        'price' => 5.99
    ],
    [

        'item_number' => 15662,
        'description' => 'T-shirt',
        'size' => 'large',
        'shelf' => 9,
        'aisle' => 13,
        'quantity' => 15,
        'price' => null
    ]
];

This is my validation function:

{
foreach ($product as $value) {
    if (!is_int($value) && !is_string($value) && !is_float($value)){
        return false;
    }
return true;
}

And this is the function that adds the $products to the $inventory array:

function create_inventory(array $products) : array
{
    $inventory = [];
    foreach ($products as $product)
    {
       if (is_valid($product)){
           foreach ($product as $value) {
               $inventory[] = $value;
           }
       }
    }
    return $inventory;
}

This works and only the Tophat is added to the $inventory array because the T-shirt product has a null value. The output looks like this:

0 : 15678
1 : Tophat
2 : small
3 : 5
4 : 12
5 : 10
6 : 5.99

But now I want to add the keys to the $inventory array, not just the values. I would like the output from the $inventory array to look like this:

item_number : 15678
description : Tophat
size : small
shelf : 5
aisle : 12
quantity : 10
price : $5.99

This is the full version of my script: store_inventory.php

I’ve tried a few things that haven’t worked. How can I add both the $key and the $value to the $inventory array?

Tags:

3

Answers


  1. 0

    You need to pass the key along with the value:

    1. Your foreach needs to be like this: foreach($products as $key => $value)
2. Then you add to the array like this: $inventory[$key] = $value;

    Your validate function seems to never be called? It doesn’t even have a function name.

    EDIT:

    Since your products array is an array of arrays. This code will do what you want, without validation.

    foreach($products as $item)
{
 foreach($item as $key => $value)
 {
  echo("{$key} - {$value}" . PHP_EOL);
 }
}

    2nd EDIT:

    You need to do something like this:

    $inventory[count($inventory) - 1][$key] = $value;

    Or:

    foreach($products as $row => $item)
{
 foreach($item as $key => $value)
 {
  $inventory[$row][$key] = $value
 }
}
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  2. 0 
    $products = [
        [
    
            'item_number' => 15678,
            'description' => 'Tophat',
            'size' => 'small',
            'shelf' => 5,
            'aisle' => 12,
            'quantity' => 10,
            'price' => 5.99
        ],
        [
    
            'item_number' => 15662,
            'description' => 'T-shirt',
            'size' => 'large',
            'shelf' => 9,
            'aisle' => 13,
            'quantity' => 15,
            'price' => null
        ]
    ];
    
    
    
        function createInventory($theProducts){
            $inventory=[];
            foreach ($theProducts as $value) {
                if (!is_int($value) && !is_string($value) && !is_float($value)){
                    foreach ($value as $key => $item) {
                        $inventory[$key] = $item;
                    }
                }
            }
    
            return $inventory;
        }

    From how I understand the question I think It should be this way as it return the $inventory array with both the key and the value

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  3. 0

    As you can see in the comments, you can loop over an array keys and values using:

    foreach ($array as $key => $value)

    If there are no keys the index of the array is the key.

    Now for you question, you can use this kind of loop to fill you $inventory. Another problem in your code is that if you have more than one valid product, it will override the previous valid product. In order to solve this, you could put all your valid products inside arrays in the inventory array. Here’s how:

    function create_inventory(array $products): array
{
    $inventory = [];
    // loop over your product array using the index to create an array if the product is valid.
    foreach ($products as $index => $product) {
        if (is_valid($product)) {
            // Create an empty array when the product is valid.
            $inventory[$index] = [];
            // Loop over the product values and add them to the newly created array.
            foreach ($product as $key => $value) {
                $inventory[$index][$key] = $value;
            }
        }
    }
    return $inventory;
}

    If you prefer, see this interactive example.

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