PHP rsort() Function

PHP rsort() Function is used to sort the elements of the array in descending order. An rsort() function is built-in function in PHP.

Syntax :

rsort(array $array , $sort_type = SORT_REGULAR);

Parameter,

$array : Required. It is input array.

$sort_type : Optional. $sort_type may be used to modify the sorting behavior using below values.

1. SORT_REGULAR - Default. Compare items normally (don't change types).
2. SORT_NUMERIC - Compare items numerically.
3. SORT_STRING - Compare items as strings.
4. SORT_LOCALE_STRING - Compare items as strings that based on current locale.
5. SORT_NATURAL - Compare items as strings using natural ordering.
6. SORT_FLAG_CASE -  It can be combined with SORT_STRING or SORT_NATURAL to sort strings case-insensitively.

 Return Values :

 It returns true on success or false on failure. A rsort() Function sort array in reverse order.

Let's see below example to understand php rsort() Function in details.