如何在另一个数组php中检查数组的任何值？

<?php
$array1 = array("apple", "orange", "banana", "grape");
$array2 = array("apple", "orange", "banana", "grape", "pineapple");

$value_to_check = "pineapple";

if (in_array($value_to_check, $array1)) {
    echo "Value exists in array1";
} else {
    echo "Value does not exist in array1";
}

if (in_array($value_to_check, $array2)) {
    echo "Value exists in array2";
} else {
    echo "Value does not exist in array2";
}
?>