Order an array based on key value

Order an array based on key value

I have a variable that is a multi dimensional array. I wish to sort the
array so then it is in ascending DESC order [1] => 10 being at the top,
and [1] => 1 being at the bottom.
$VarArray
Array (
[0] => Array ( [Col1] => Col1Value [0] => Col2sum [SUM(Col2Value)] => 10
[1] => 10 )
[1] => Array ( [Col1] => Col1Value [0] => Col2sum [SUM(Col2Value)] => 4
[1] => 4 )
[2] => Array ( [Col1] => Col1Value [0] => Col2sum [SUM(Col2Value)] => 6
[1] => 6 )
[3] => Array ( [Col1] => Col1Value [0] => Col2sum [SUM(Col2Value)] => 2
[1] => 2 )
[4] => Array ( [Col1] => Col1Value [0] => Col2sum [SUM(Col2Value)] => 1
[1] => 1 )
[5] => Array ( [Col1] => Col1Value [0] => Col2sum [SUM(Col2Value)] => 4
[1] => 4 )
)