PHP rsort() Function

❮ PHP Array Reference

Example

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

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

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, sorttype)

Parameter Values

Parameter Description
array Required. Specifies the array to sort
sorttype 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

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

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

Example

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);
?>
Try it Yourself »
❮ PHP Array Reference
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