[PHP] sorting associative array

[Jeffery Fernandez]

I have the following multi-dimentional array and I want to sort it by 
the "score" key value

print_r($data);
Array
(
   [0] => Array
       (
           [video_id] => 71
           [old_id] => 7854
           [title] => When the fire comes
           [video_copies] => 1
           [running_time] => 48
           [date_published] => 06/02
           [place_published] => Australia
           [abstract] => ABC TV Gives details on many aspects of bushfires: 
.......................
           [library_medium_id] => 5
           [library_type] => 4
           [score] => 6.3310546875
       )
   [1] => Array
       (
           [video_id] => 9
           [old_id] => 7792
           [title] => Fire awareness
           [video_copies] => 1
           [running_time] => 15
           [date_published] => 
           [place_published] => Victoria
           [abstract] => Safetycare Australia A general video lookin.........
           [library_medium_id] => 5
           [library_type] => 4
           [score] => 3.1997931003571
       )

)
any ideas. Thanks
Jeffery
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