array_udiff

Function • Params and return types changed in PHP 8.0

Computes the difference of arrays by using a callback function for data comparison.

PHP 5

PHP 7

Improved

PHP 8.1

PHP 8.2-8.3

PHP 8.4

PHP 8.5

PHP 8.6

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

Typearray

The first array.

Variadic, Optional

Arrays to compare against.

Typearray

Returns an array containing all the values of $array that are not present in any of the other arguments.

Changes to the `array_udiff` Function

-array_udiff(
-    $arr1,
-    $arr2,
-    $callback_data_comp_func
-  )
+array_udiff(array $array, ...$rest): array