PHP rsort()Functions

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Examples

Sort the elements in the array $cars in descending alphabetical order:

<?php
$cars=array("Volvo","BMW","Toyota");
rsort($cars);
?>

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Definition and Usage

The rsort() function sorts a numeric array in descending order.

Tip:Please usesort()function to sort a numeric array in ascending order.

Syntax

rsort(array,sortingtype);

Parameter Description
array Required. Specifies the array to be sorted.
sortingtype Optional. Specifies how to arrange the elements/items of the array. Possible values:
  • 0 = SORT_REGULAR - Default. Arrange each item in regular order (Standard ASCII, without changing types).
  • 1 = SORT_NUMERIC - Treat each item as a number.
  • 2 = SORT_STRING - Treat each item as a string.
  • 3 = SORT_LOCALE_STRING - Treat each item as a string, based on the current locale (can besetlocale()changed).
  • 4 = SORT_NATURAL - Treat each item as a string, using a similarnatsort()natural ordering.
  • 5 = SORT_FLAG_CASE - Can be combined (bitwise OR) with SORT_STRING or SORT_NATURAL to sort strings case-insensitively.

Technical Details

Return Value: Returns TRUE on success, or FALSE on failure.
PHP Version: 4+

More Examples

Example 1

Sort the elements in the array $numbers in descending numeric order:

<?php
$numbers=array(4,6,2,22,11);
rsort($numbers);
?>

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Example 2

Treat each item as a number, and sort the elements in the array $cars in descending order:

<?php
$cars=array("Volvo","BMW","Toyota");
rsort($cars,SORT_NUMERIC);
?>

Run example »

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