rsort in PHP

PHP rsort() function is used to sort an array by values in reverse order.
PHP rsort() function returns TRUE on success, or FALSE on failure.

Syntax:

rsort(array,sorttype)

array : Required. Specifies the array to use.
sorttype : Optional. Specifies how to sort the array values.
    Possible values:

• SORT_REGULAR - Default. Treat values as they are (don't change types)
• SORT_NUMERIC - Treat values numerically
• SORT_STRING - Treat values as strings
• SORT_LOCALE_STRING - Treat values as strings, based on local settings

Example:

<?php
$daysarr = array( "a"=>"Sunday", "b"=>"Monday", "c"=>"Tuesday" );
rsort($daysarr);
print_r($daysarr);
?>

Output will be:

Array ( 
        [0] => Tuesday 
        [1] => Sunday 
        [2] => Monday 
      )