How is the array_sort function used in PHP?

The function array_sort does not exist in PHP, you may be mistaken for its function name. In PHP, you can use the sort function to sort arrays.

The usage of the sort function is as follows:

$array = [3, 1, 2, 5, 4];
sort($array);
print_r($array);

Output Result:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

The sort function arranges array elements in ascending order, while the rsort function can be used for descending order.