array_intersect_ukey
PHP 5 >= 5.1.0, PHP 7, PHP 8
array_intersect_ukey - Computes the intersection of arrays using a callback function on the keys for comparison
Manual
array_intersect_ukey(
array$array,
... array$arrays,
callable$key_compare_func ): array
array_intersect_ukey returns an array containing all the values of array which have matching keys that are present in all the arguments.
Parameters
- array
-
Initial array for comparison of the arrays.
- arrays
-
Arrays to compare keys against.
- key_compare_func
-
The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
callback(mixed$a,mixed$b ): int
Return Values
Returns the values of array whose keys exist in all the arguments.