array_diff

Function • Params and return types changed in PHP 8.0

Computes the difference of arrays.

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

array_diff Function synopsis

array_diff(array $array, array ...$arrays): array

Parameters

$array

Typearray

The array to compare from

$arrays

Variadic, OptionalTypearray

Arrays to compare against

Return value

Typearray

Returns an array containing all the entries from $array that are not present in any of the other arrays. Keys in the $array array are preserved.

Changes to the array_diff Function

PHP 8.0

  • Return type added: array
  • Parameter name of parameter #1 changed: $arr1 to $array
  • Parameter type added for parameter #1 ($array): array
  • Parameter type added for parameter #2 ($arrays): array
- array_diff($arr1, ...$arrays)
+ array_diff(array $array, array ...$arrays): array

array_diff Function Availability

PHP VersionAvailability
PHP 8.5Future Release Yes
PHP 8.4Upcoming Release Yes
PHP 8.3Supported (Latest) Yes
PHP 8.2Supported Yes
PHP 8.1Security-Fixes Only 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