PHP - Convert multidimensional array to 2D array with dot notation keys

Question

There are plenty of tips and code examples out there of accessing PHP arrays with dot notation, but I would like to do somewhat the opposite. I would like to take a multidim

Answer 1

This is my take on a recursive solution, which works for arrays of any depth:

function convertArray($arr, $narr = array(), $nkey = '') {
    foreach ($arr as $key => $value) {
        if (is_array($value)) {
            $narr = array_merge($narr, convertArray($value, $narr, $nkey . $key . '.'));
        } else {
            $narr[$nkey . $key] = $value;
        }
    }

    return $narr;
}

Which can be called as $newArray = convertArray($myArray).