Array sort

Before sort

Array
(
    [1] => t
    [2] => 0
    [3] => A
    [4] => 7
    [5] => Y
    [6] => a
    [7] => B
    [8] => r
    [9] => v
)

After sort

Array
(
    [0] => 0
    [1] => 7
    [2] => A
    [3] => B
    [4] => Y
    [5] => a
    [6] => r
    [7] => t
    [8] => v
)