Array sort
Before sort
Array
(
[1] => K
[2] => i
[3] => f
[4] => P
[5] => U
[6] => 6
[7] => I
[8] => v
[9] => u
)
After sort
Array
(
[0] => 6
[1] => I
[2] => K
[3] => P
[4] => U
[5] => f
[6] => i
[7] => u
[8] => v
)