Question

I have code in html:

<input type="text" name="product[0][name]" value="name of product 1"/>
<input type="text" name="product[1][name]" value="name of product 2"/>
<input type="text" name="product[2][name]" value="name of product 3"/>
<input type="text" name="product[3][name]" value="name of product 4"/>

I try to send this via $_POST.
When im using

print_r($_POST['product']);

I got list of my products for ex:

Array
(
    [product] => Array
        (
            ['201'] => Array
                (
                    ['name'] => J5313 BEŻOWE
                    ['price'] => 14.99
                    ['quantity'] => 1
                    ['size'] => 36
                    ['product_subtotal'] => 14.99
                )

            ['200'] => Array
                (
                    ['name'] => J5313 SZARE
                    ['price'] => 14.99
                    ['quantity'] => 1
                    ['size'] => 37
                    ['product_subtotal'] => 14.99
                )

        )

)

Everything is ok, but if i want to echo my array variables i have empty vars!
Its my code:

foreach($_POST['product'] as $key => $value){
        echo "product key: $key, product name: ".$value['name']."";
}

What php write in document:

product key: 0, product name:
product key: 1, product name:
product key: 2, product name:
product key: 3, product name:

$key variable is not empty but $value is empty!
I try to change name of $value var but its not solve my problem.
Any one knows what i must to to?

Answer 1

Since it’s unclear, based on your code, why you’re experiencing this problem there are a few debugging steps you could take:

Show all warnings

error_reporting(-1);
ini_set('display_errors', 'On');

Add those two lines to your script and run it; if there are any obvious issues like missing indices it will echo warnings in your page.

Add more debugging

Since your loop can find the keys, you should var_dump($value); inside the loop to figure out if perhaps you made a typo (although that would have shown up by showing all warnings.