Question : HOW TO SORT MULT-DIM ARRAY IN PHP

I have a multi-dimensional array in PHP and would like to sort a rate field by ascending order.
The structure of the array is in Code Attachment here.  The hierachy of this array is as follows:  PLATFORM can have many MANUFACTURER's that can have many MODEL's.
I am calculating effiency rating for each PLATFORM, MFG, and MODEL row by taking the number of incidents/inventory count to derive breakage ratio.
The RATES sub-array corresponds to rows in the other sub-arrays; ie for PLATFORM, MFG, and MODEL an efficiency rate is calculated.  So, if I sort the RATES descending, I'd want to do that only within the MFG/MODEL    I removed rows from attached output of arraybut left enough to show structure and content. Any ideas? 
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Array
(
    [id] => Array
        (
            [0] => 0
            [1] => 1
            [2] => 2
            [3] => 3
            [4] => 3
            [5] => 3
            [6] => 2
            [7] => 3
            [8] => 3
            [9] => 3
            [39] => 2
            [40] => 3
            [41] => 2
            [42] => 3
            [43] => 3
         )

    [platform] => Array
        (
            [0] => ENTERPRISE WIDE
            [1] => SERVER
            [2] => SERVER
            [3] => SERVER
            [4] => SERVER
            [5] => SERVER
            [6] => SERVER
            [7] => SERVER
            [8] => SERVER
            [9] => SERVER
            [39] => SERVER
            [40] => SERVER
            [41] => SERVER
            [42] => SERVER
            [43] => SERVER
            [44] => SERVER
            
        )

    [mfg] => Array
        (
            [0] => 
            [1] => 
            [2] => FUJITSU
            [3] => FUJITSU
            [4] => FUJITSU
            [5] => FUJITSU
            [6] => IBM
            [7] => IBM
            [8] => IBM
            [9] => IBM
            [39] => OTHER
            [40] => OTHER
            [41] => SUN
            [42] => SUN
            [43] => SUN
            
        )

    [model] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 250
            [4] => 650
            [5] => 850
            [6] => 
            [7] => 7017-S80
            [8] => 7026-6H1
            [9] => 7026-6M1
            [39] => 
            [40] => K460
            [41] => 
            [42] => 1000E
            [43] => 12K
            
        )

    [count] => Array
        (
            [0] => 503
            [1] => 503
            [2] => 1
            [3] => 1
            [4] => 1
            [5] => 1
            [6] => 50
            [7] => 1
            [8] => 1
            [9] => 2
            [39] => 1
            [40] => 1
            [41] => 451
            [42] => 1
            [43] => 2
         )    

    [invcount] => Array
        (
            [0] => 21556
            [1] => 21556
            [2] => 57
            [3] => 13
            [4] => 10
            [5] => 26
            [6] => 1653
            [7] => 36
            [8] => 11
            [9] => 37
            [39] => 0
            [40] => 0
            [41] => 19836
            [42] => 0
            [43] => 18
            
        )

    [rate] => Array
        (
            [0] => 2.33
            [1] => 2.33
            [2] => 1.75
            [3] => 7.69
            [4] => 10.00
            [5] => 3.85
            [6] => 3.02
            [7] => 2.78
            [8] => 9.09
            [9] => 5.41
            [39] => 0
            [40] => 0
            [41] => 2.27
            [42] => 0
            [43] => 11.11
            
        )

    [deleteflag] => Array
        (
            [0] => 0
            [1] => 0
            [2] => 0
            [3] => 0
            [4] => 0
            [5] => 0
            [6] => 0
            [7] => 1
            [8] => 0
            [9] => 0
            [39] => 0
            [40] => 0
            [41] => 0
            [42] => 1
            [43] => 0
            
        )

    [l2rate] => Array
        (
            [0] => 0
            [1] => 0
            [2] => 1.75
            [3] => 1.75
            [4] => 1.75
            [5] => 1.75
            [6] => 3.02
            [7] => 3.02
            [8] => 3.02
            [9] => 3.02
            [39] => 0
            [40] => 0
            [41] => 2.27
            [42] => 2.27
            [43] => 2.27
            
        )

)

Answer : HOW TO SORT MULT-DIM ARRAY IN PHP

I would pop off your rate array so you sort it by itself using asort (which maintains indexes).

so...
$rate_array = array[rate];
asort($rate_array)

now you have an array of all the rates and indexes in the right order. Now, I would break apart all of the arrays then rebuild one big one with some code kind of like

foreach($rate_array as $key=>$value){
    $id_value = $id_array[$key];
    array_push($new_id_array);
    etc...
}
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