Array sort
Before sort
Array
(
[1] => e
[2] => k
[3] => k
[4] => Z
[5] => o
[6] => J
[7] => N
[8] => X
[9] => W
)
After sort
Array
(
[0] => J
[1] => N
[2] => W
[3] => X
[4] => Z
[5] => e
[6] => k
[7] => k
[8] => o
)