php - Make mulitdimensional array unique and keep its structure -

I have found a multi-dimensional array that holds an array of several session IDs and field data and looks like this: P> Array-25 16:28:56 [ip_race] => xx.xxx.x.xxx [user_name] => public.static [session_type] => gt; ; Start) [1] = & gt; Array ([date_time] => 2013-03-25 16:28:56 [IP_Edress] => xx.xxx.x.xxx [user_name] = & gt; public.active [session_type] = & gt; Start)

As you can see, the first 2 field array records have the same data. So far I've written the following part of the PHP code to make it unique and sorting the date. ($ I = 0; $ i & lt; counts ($ canceled output); $ i ++) {usort ($ unsortedoutput [$ i] ['fields'], 'sort function')

  $ unique [] = array_map ('unserialize', array_unique (array_map ('serialize', $ unassigned output [$ i] ['field']))); }  

This works, but when I print the $ unique array, then it (as expected) [session_id] and [field] key:

  array ([102] = & gt; array ([0] = & gt; ([Date_time] => 2013-03-25 16:28: 56 [ip_address] => 94.229.1.233 [user_name] = & gt; public.static [session_type] = & gt; start)  

My question is:

I used to multiply my multi-dimensional array while maintaining the entire structure. I think I am close, but I can not understand the rest.

= Post- As an alternative, you can call You can use each copy to change the and context with foreach :

foreach ($ unsortedOutput as & amp; $ O) {usort ($ o ['fields'], 'sortfunction'); $ o ['fields'] = array_map ('unserialize', AR Ray_unique (array_map ('serialize', $ o ['fields']) )); }