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PHP rsort() Function

PHP Array Reference PHP Array Reference

Example

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

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

Run example »

Definition and Usage

The rsort() function sorts an indexed array in descending order.

Tip: Use the sort() function to sort an indexed array in ascending order.

Syntax

rsort(array,sortingtype);

Parameter Description
array Required. Specifies the array to sort
sortingtype Optional. Specifies how to compare the array elements/items. Possible values:
  • 0 = SORT_REGULAR - Default. Compare items normally (don't change types)
  • 1 = SORT_NUMERIC - Compare items numerically
  • 2 = SORT_STRING - Compare items as strings
  • 3 = SORT_LOCALE_STRING - Compare items as strings, based on current locale
  • 4 = SORT_NATURAL - Compare items as strings using natural ordering
  • 5 = SORT_FLAG_CASE -

Technical Details

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


More Examples

Example 1

Sort the elements of the $numbers array in descending numerical order:

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

Run example »

Example 2

Compare the items numerically and sort the elements of the $cars array in descending order:

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

Run example »


PHP Array Reference PHP Array Reference

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