递归函数将多维数组中的特定键移动到其级别的底部

Question

I'm looking for a php (sort?)function which move a specific key ('current_files') to the bottom of its array level.

I have sth like that:

[A] => [
     [current_files] => [
           [0] => ...
           [1] => ...  
     ]
     [D] => [
          [G] => [...]   
          [current_files] => [...]
          [B] => [...]
     ]
]
[current_files] => [...]
[K] => [...]

I need this:

[A] => [
     [D] => [
          [G] => [...]   
          [B] => [...]
          [current_files] => [...]
     ]
     [current_files] => [
           [0] => ...
           [1] => ...  
     ]
]
[K] => [...]
[current_files] => [...]

I know that i need a recursive function like arr_multisort but i dont understand it -_-