How to access and manipulate multi-dimensional array by key names / path?

Question

I\'ve to implement a setter in PHP, that allows me to specify the key, or sub key, of an array (the target), passing the name as a dot-separated-keys value.

Answer 1

As a "getter", I've used this in the past:

$array = array('data' => array('one' => 'first', 'two' => 'second'));

$key = 'data.one';

function find($key, $array) {
    $parts = explode('.', $key);
    foreach ($parts as $part) {
        $array = $array[$part];
    }
    return $array;
}

$result = find($key, $array);
var_dump($result);