(PHP 5, PHP 7)
array_uintersect_uassoc — Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions
array_uintersect_uassoc ( array $array1 , array ...$arrays , callable $value_compare_func , callable $key_compare_func ) : array
Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions.
array1
The first array.
arrays
Further arrays.
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
key_compare_func
Key comparison callback function.
Returns an array containing all the values of array1 that are present in all the arguments.
Example #1 array_uintersect_uassoc() example
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_uintersect_uassoc($array1, $array2, "strcasecmp", "strcasecmp"));
?> The above example will output:
Array
(
[a] => green
[b] => brown
)
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https://www.php.net/manual/en/function.array-uintersect-uassoc.php