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ARRAY_DIFF_UKEY

Computes the difference of arrays using a callback function on the keys for comparison

SYNTAX

array_diff_ukey ( array $array1 , array $array2 [, array $... ], callable $key_compare_func ) : array

PARAMETERS

array1

The array to compare from

array2

An array to compare against

...

More arrays to compare against

key_compare_func

The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.

RETURN

Returns an array containing all the entries from array1 that are not present in any of the other arrays.

EXAMPLES

ARRAY1 ARRAY2 KEY_COMPARE_FUNC

Array
(
    [c] => 2
    [d] => 3
)

...

Array
(
    [c] => 2
    [d] => 3
)

PHP