array_udiff_assoc

Function • Params and return types changed in PHP 8.0

Computes the difference of arrays with additional index check, compares data by a callback function.

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_udiff_assoc Function synopsis

array_udiff_assoc(array $array, ...$rest): array

Parameters

$array

Typearray

The first array.

$rest

Variadic, Optional

Arrays to compare against.

Return value

Typearray

array_udiff_assoc returns an array containing all the values from $array that are not present in any of the other arguments. Note that the keys are used in the comparison unlike array_diff and array_udiff. The comparison of arrays' data is performed by using an user-supplied callback. In this aspect the behaviour is opposite to the behaviour of array_diff_assoc which uses internal function for comparison.

Changes to the array_udiff_assoc Function

PHP 8.0

  • Return type added: array
  • Parameter count changed: 3 to 2
  • Parameter removed - #3: $callback_key_comp_func
-array_udiff_assoc(
-    $arr1,
-    $arr2,
-    $callback_key_comp_func
-  )
+array_udiff_assoc(array $array, ...$rest): array

array_udiff_assoc 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