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PHP rsort() Function

PHP Array Reference Complete PHP Array Reference

Definition and Usage

The rsort() function sorts an array by the values in reverse order.

This function assigns new keys for the elements in the array. Existing keys will be removed.

This function returns TRUE on success, or FALSE on failure.

Syntax

rsort(array,sorttype)

Parameter Description
array Required. Specifies the array to sort
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
$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse");
rsort($my_array);
print_r($my_array);
?>

The output of the code above will be:

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

PHP Array Reference Complete PHP Array Reference

From http://www.w3schools.com (Copyright Refsnes Data)