Array sort

Before sort

Array
(
    [1] => F
    [2] => 7
    [3] => N
    [4] => a
    [5] => e
    [6] => F
    [7] => t
    [8] => e
    [9] => b
)

After sort

Array
(
    [0] => 7
    [1] => F
    [2] => F
    [3] => N
    [4] => a
    [5] => b
    [6] => e
    [7] => e
    [8] => t
)