Problem:

To get the index values of an array to print accordingly in value attribute of radio buttons.

The array $_SESSION['items']:

Array
(
    [2] => Array
        (
            [category] => 2
            [question] => Array
                (
                    [6] => Källorna refereras separat
                    [7] => Vissa försök till sammanbindning
                    [8] => En del sammanfattningar
                    [9] => Olika forskningslinjer jämförs och sammanfattas
                    [10] => Kontraster, jämförelser, sammanfattningar; centrala likheter och skillnader framhävs
                )

            [title] => Integration av källorna
        )
)

I have a PHP function that looks like this:

function itemsLayout ($array)
{   
    for ($i = 1; $i <= count($array['question']); $i++)
    {

        $form .= '<input type="radio" name="'.$array['category'].'" id="'.$array['category'].'" value="INDEX VALUE FOR QUESTION ARRAY HERE">';
    }

    return $form;
}

PHP code:

I get the index by using the following:

$key = key($_SESSION['items']);
$current = $_SESSION['items'][$key];

And I print the first index by using:

echo itemsLayout($current);

Question:

How do I get the index values 6, 7, 8, 9, 10 to print in the value attribute for each radio button?