Multi-dimensional array iterator

array_iterator.php

$data = array(/* multi-dimensional */);
$result = iterate($data);

function iterate(array $array)
{
    $result = array();

    foreach($array as $item) {
        if(is_array($item)) {
            $result[] = iterate($item);
        } else {
            $changed = $item; // do something to the value.

            $result[] = $changed;
        }
    }

    return $result;
}

Taken from here - https://stackoverflow.com/questions/24383437/recursive-foreach-loop-i-think