cakephp combining associated array fields

Question

I've an associated array with 20 elements whose child array looks like

(int) 2 => array(
    'Comment' => array(
        'id' => '5',
        'user_id' => '13',
        'time' => '2012-05-18 14:47:36'
    ),
    'User' => array(
        'name' => 'User name'
    )
)

Now I want to extract the field name from its child array User with cakephp's set utility and append it to the child array Comment. Is there a one way step to do this other than using a for or foreach loop?

(int) 2 => array(
    'Comment' => array(
        'id' => '5',
        'user_id' => '13',
        'time' => '2012-05-18 14:47:36',
        'name =>'User name'
    )
)

Answer 1

It doesn't answer your question, but doing this with a foreach is a one way step too:

foreach ($arrays as $array)
  $array['Comment']['name'] = $array['User']['name'];

I believe there's no need to use some utility, just for the sake of using an utility.
Especially that it'll do a foreach itself.