Array sort
Before sort
Array
(
[1] => d
[2] => 9
[3] => 2
[4] => m
[5] => Q
[6] => e
[7] => x
[8] => e
[9] => U
)
After sort
Array
(
[0] => 2
[1] => 9
[2] => Q
[3] => U
[4] => d
[5] => e
[6] => e
[7] => m
[8] => x
)