php array_intersect() function usage code_PHP tutorial

array array_intersect (array array1, array array2 [, array ...])
array_intersect() function returns the intersection array of two or more arrays.
array_intersect() returns an array containing all values ​​in array1 that also appear in all other parameter arrays. Note that the key names remain unchanged.
Let me show you the example from the manual:


$array1 = array ("a" => "green", "red", " blue");
$array2 = array ("b" => "green", "yellow", "red");
$result = array_intersect ($array1, $array2);
print_r ($result);
?>
The output result is as follows:

Array
(
[a] => green
[0] => red
)