array_intersect

Function • Params and return types changed in PHP 8.0

Computes the intersection of arrays.

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

array_intersect Function synopsis

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

Parameters

$array

Typearray

The array with master values to check.

$arrays

Variadic, OptionalTypearray

Arrays to compare values against.

Return value

Typearray

Returns an array containing all of the values in $array whose values exist in all of the parameters.

Changes to the array_intersect 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 ($arrays): array
- array_intersect($arr1, ...$arrays)
+ array_intersect(array $array, array ...$arrays): array

array_intersect 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