PHP 8 reference · Array Functions

PHP array_reverse() Function

Return a new array with the elements in reverse order. String keys are kept; numeric keys are renumbered by default.

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Syntax

array_reverse(array $array, bool $preserve_keys = false): array

Parameter	Description
`array`	The input array.
`preserve_keys` optional	`true` keeps numeric keys too. Default: `false`

The reversed array.

Reverse a listTry it yourself

<?php
print_r(array_reverse([1, 2, 3]));

Output

Array
(
    [0] => 3
    [1] => 2
    [2] => 1
)

KeysTry it yourself

<?php
$ranked = ["gold" => "Ada", "silver" => "Alan"];
print_r(array_reverse($ranked));
print_r(array_reverse(["x", "y"], true));

Output

Array
(
    [silver] => Alan
    [gold] => Ada
)
Array
(
    [1] => y
    [0] => x
)

Version	Change
PHP 4.0	Added

strrev() · Reverse a string byte by byte. Fine for ASCII, but it breaks multibyte characters such as é.
rsort() · Sort an array's values in descending order, in place. Keys are discarded and the result is renumbered from 0.
krsort() · Sort an array by key in descending order, keeping each value with its key.
PHP Arrays · tutorial
PHP Array Functions · tutorial