Array sort

Before sort

Array
(
    [1] => 0
    [2] => E
    [3] => n
    [4] => 0
    [5] => t
    [6] => P
    [7] => E
    [8] => J
    [9] => o
)

After sort

Array
(
    [0] => 0
    [1] => 0
    [2] => E
    [3] => E
    [4] => J
    [5] => P
    [6] => n
    [7] => o
    [8] => t
)