The original array:
Array
(
 [0] => Array
  (
   [Tags Name] => TIFF
   [271] => Array
    (
     [Data] => Array
      (
       [0] => Canon
      )

    )

   [272] => Array
    (
     [Tag Name] => Model
     [Tag Description] => 
     [Type] => String
    )
  )
  [34665] => Array
    (
     [Data] => Array
      (
       [0] => Array
        (
         [33434] => Array
          (
           [Data] => Array
            (
             [0] => Array
              (
               [Numerator] => 1
               [Denominator] => 60
              )
            )
          )
         [33437] => Array
          (
           [Tag Name] => Aperture F Number
           [Data] => Array
            (
             [0] => Array
              (
               [Numerator] => 35
               [Denominator] => 10
              )
            )
          )
        )
      )
    )
)

I want to get the piece of data that is 'Canon' in the array at:
[0][271][Data][0]
and I also need to get the piece of data that says 'Model' in the array at:
[0][272][Tag Name]
but I also need to let my user define a key, so he might want to get 
[0][34665][Data][0][33434][Data][0][Numerator]
so I can't hardcode in all the values I need.