Dynamic multidimensional array keys for class property - php

Question

Is it possible to create multidimensional array with its keys defined in array? Yes, it is, according to bunch of Stack Overflow answers. Here is one: Dynamic array keys
function insert_using_keys($arr, array $path, $value) { // See linked answer }
$arr = create_multi_array($arr, array('a', 'b', 'c'), 'yay'));
print_r($arr);
Prints
Array ( [a] => Array ( [b] => Array ( [c] => yay ) ) )
Would the same be possible for class properties?
This is a barebone version of my Collection class. Method set_at should add a multidimensional array to $data property the same way insert_using_keys function does.
class A {
protected $data = array();
public function set($key, $value) {
$this->data[$key] = $value;
}
public function set_at(array $keys, $value) {
}
}
I've tried a several modifications of the insert_using_keys to no avail. I was able to set the keys to the property, but not assign value "to the last one".
Would someone point me in the right direction please? Thanks in advance!

Answer 1

In the midst of recreating the "key-setter" function, I was able to answer my own question (was it your intention all along, Stefan?).
Here is the code:
public function set_at(array $keys, $value) {
$first_key = array_shift($keys);
foreach (array_reverse($keys) as $key) {
$value = array($key => $value);
}
$this->data[$first_key] = $value;
}