arsort

Function • Return type changed in PHP 8.2

Sort an array in descending order and maintain index association.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2
Improved
PHP 8.3
PHP 8.4
PHP 8.5
PHP 8.6

arsort Function synopsis

arsort(array &$array, int $flags = SORT_REGULAR): true

Parameters

$array

Passed by referenceTypearray

The input array.

$flags

OptionalTypeintDefault valueSORT_REGULAR

$flags accepts one or a bitmask of the following constant values:

Note that the parameter $array is passed by reference, and contains additional/updated context data that may be useful.

Return value

Typetrue

Always returns true

Changes to the arsort Function

PHP 8.2

  • Return type changed: bool to true
- arsort(array &$array, int $flags = SORT_REGULAR): bool
+ arsort(array &$array, int $flags = SORT_REGULAR): true

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $arg to $array
  • Parameter type added for parameter #1 ($array): array
  • Parameter name of parameter #2 changed: $sort_flags to $flags
  • Parameter type added for parameter #2 ($flags): int
  • Parameter default value added for position #2 ($flags): SORT_REGULAR
- arsort(&$arg, $sort_flags)
+ arsort(array &$array, int $flags = SORT_REGULAR): bool

arsort Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes