PHP array_intersect_ukey() Function

The array_intersect_ukey( ) function Computes the intersection of arrays using a callback function on the keys for comparison. The function returns an array containing all the values of the first array which have matching keys that are present in all the arguments. This function was introduced in PHP 5.1.

Syntax

Parameter

Return Type

This function returns the values of array1 whose keys exist in all the arguments.

EXAMPLE 1

Output:

 Array ( [b] => Rohit ) 

EXAMPLE 2

Output:

 Array ( [b] => Ball ) 

EXAMPLE 3

Output:

 Array ( [a] => red ) 

EXAMPLE 4

Output:

 Array ( [a] => red [b] => blue )