Radio button post data of multiple input fields

Question

I have a form in my PHP page which is created by a loop through an array.

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Answer 1

I solved the issue by doing the following.

The guys above here all got me on the right track and couldn't have done it without them!

Changed

<input type="radio" name="size[]" value="'.$arr_get_product_details[$d]['size'].'">
<input class="qty" type="text" size="3" name="amount" value="1">

To

<input type="radio" name="size['.$d.']" value="'.$arr_get_product_details[$d]['size'].'">
<input class="qty" type="text" size="3" name="amount['.$d.']" value="1">

Also changed

if (isset($_POST['add_to_chart']))
{
    $product_id = $_POST['product_id'];
    $size = $_POST['size'][0];
    $qty = $_POST['amount'];
}

To this

if (isset($_POST['add_to_chart']))
{
    // Array ID key
    $key = key($_POST['size']);

    $product_id = $_POST['product_id'];
    $size = $_POST['size'][$key];
    $qty = $_POST['amount'][$key];
}

Works like a charm! Thank you all for your very helpful comments!

Answer 2

Radio buttons should all use the same name. Only the selected radio button value is submitted:

<input type="radio" name="Radiosize" value="'.$arr_get_product_details[$d]['size'].'">

then:

$size = $_POST['Radiosize'];

There is no need to look at it as an array - it isn't submitted as one. Radio Buttons are not like checkboxes in form processing.

Answer 3

Form code:

    <input type="radio" name="size" value="'.$arr_get_product_details[$d]['size'].'">
    <input class="qty" type="text" size="3" name="amount['.$arr_get_product_details[$d]['size'].']" value="1">

And then you will have value of size. And array of amounts with size keys.

    $size   = $_POST['size'];
    $amount = $_POST['amount'][$size];

Answer 4

change

<input class="qty" type="text" size="3" name="amount" value="1">

to

<input class="qty" type="text" size="3" name="amount[]" value="1">

and then you will have 2 arrays that will have same size.

<?php
    $size = $_POST['size'][0];
    $amount = $_POST['amount'][$size];
?>