(PHP 5, PHP 7)
array_uintersect — Computes the intersection of arrays, compares data by a callback function
array_uintersect ( array $array , array ...$arrays , callable $value_compare_func ) : array
Computes the intersection of arrays, compares data by a callback function.
array
The first array.
arrays
Arrays to compare against.
value_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
Returns an array containing all the values of array that are present in all the arguments.
Example #1 array_uintersect() example
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_uintersect($array1, $array2, "strcasecmp"));
?> The above example will output:
Array
(
[a] => green
[b] => brown
[0] => red
)
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https://www.php.net/manual/en/function.array-uintersect.php