PHP array function sequence rsort() - Sort the element values ​​of the array in descending order_PHP tutorial

rsort() definition and usage
rsort() function sorts the elements of the array in reverse order by key value. Basically the same function as arsort().

Note: This function assigns new key names to cells in array. This will delete the original keys rather than just reorder them.

Returns TRUE if successful, otherwise returns FALSE.

The optional second parameter contains additional sorting flags.

Syntax
rsort(array,sorttype) Parameter Description
array Required. The input array.
sorttype optional. Specifies how to arrange the values ​​of an array. Possible values:

SORT_REGULAR - Default. Processed with their original type (without changing type).
SORT_NUMERIC - Handle values ​​as numbers
SORT_STRING - Handle values ​​as strings
SORT_LOCALE_STRING - Handle values ​​as strings, based on local settings*.

*: This value is newly added in PHP 4.4.0 and 5.0.2. Prior to PHP 6, the system locale was used, which could be changed with setlocale(). Since PHP 6, the i18n_loc_set_default() function must be used.

Example

Copy code The code is as follows:

$my_array = array ("a" => "Dog", "b" => "Cat", "c" => "Horse");
rsort($my_array);
print_r($my_array);
?>

Output:
Array
(
[0] => Horse
[1] => Dog
[2 ] => Cat
)

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