PHP Add arrays to another array without key

Question

I need to create the following array:

$data = array(
   "invoice_info" => array(
       ...
    ),
    "product_info => array(
        array(
           "name" => "product 1",
           ...
        ),
        array(
           "name => "product 2",
            ...
        )
    )
);

I am currently struggling to get the products into my "product_info" array. For each product I want to add I use the following line:

$product_info[] = array("name" => "product 1", ...);

This works fine for the first one. Adding another one, however, overwrites it. The second problem is, that keys are added, that should not be there:

[product_info] => Array
    (
        [0] => Array
            (
                [name] => product 2
                [qty] => 293
                [price] => 44
                [sum] => 12892
            )

    )

This is the output after adding 2 products. Just the second one is included. What am I doing wrong?

The value "name" is the a key (always the same key ) so without a proper index you can't append the same array .. each time you add name=> array your overwrite the previous — ScaisEdge
– ScaisEdge, Commented Jun 1, 2019 at 16:27
Where does $product_info come from? It's $data['product_info']. — Barmar
– Barmar, Commented Jun 1, 2019 at 16:31
Please show your actual code, it's impossible to tell what you're doing wrong from that one line. — Barmar
– Barmar, Commented Jun 1, 2019 at 16:32

RiggsFolly · Accepted Answer · 2019-06-01 16:47:54Z

This will generate you an array of arrays

$data = array(
    "invoice_info" => array(),
    "product_info" => array(),
    );

$data['product_info'][] = ['name' => 'prod1','qty'=>1, 'price'=> 44, 'sum'=>100];
$data['product_info'][] = ['name' => 'prod2','qty'=>22, 'price'=> 55, 'sum'=>200];

print_r($data);

RESULT

Array
(
    [invoice_info] => Array
        (
        )

    [product_info] => Array
        (
            [0] => Array
                (
                    [name] => prod1
                    [qty] => 1
                    [price] => 44
                    [sum] => 100
                )

            [1] => Array
                (
                    [name] => prod2
                    [qty] => 22
                    [price] => 55
                    [sum] => 200
                )

        )

)

Now if you had done something like this

$product_info =& $data['product_info'];

to create your $product_info variable then note that you must use the =& or when you attempt to allocate a new array it will not work as you expect. So, adding that to the previous code would look like this

$data = array(
    "invoice_info" => array(),
    "product_info" => array(),
    );

$data['product_info'][] = ['name' => 'prod1','qty'=>1, 'price'=> 44, 'sum'=>100];
$data['product_info'][] = ['name' => 'prod2','qty'=>22, 'price'=> 55, 'sum'=>200];


$product_info =& $data['product_info'];

$product_info[] = ['name' => 'prod3','qty'=>99, 'price'=> 155, 'sum'=>300];

print_r($data);

Will produce the result

Array
(
    [invoice_info] => Array
        (
        )
    [product_info] => Array
        (
            [0] => Array
                (
                    [name] => prod1
                    [qty] => 1
                    [price] => 44
                    [sum] => 100
                )
            [1] => Array
                (
                    [name] => prod2
                    [qty] => 22
                    [price] => 55
                    [sum] => 200
                )
            [2] => Array
                (
                    [name] => prod3
                    [qty] => 99
                    [price] => 155
                    [sum] => 300
                )
        )
)

Collectives™ on Stack Overflow

PHP Add arrays to another array without key

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related