在php中返回数组的数组

function getNestedArray() {
    $nestedArray = array(
        array('apple', 'banana', 'cherry'),
        array('dog', 'cat', 'elephant'),
        array('red', 'blue', 'green')
    );
    
    return $nestedArray;
}

$result = getNestedArray();
print_r($result);

Array
(
    [0] => Array
        (
            [0] => apple
            [1] => banana
            [2] => cherry
        )

    [1] => Array
        (
            [0] => dog
            [1] => cat
            [2] => elephant
        )

    [2] => Array
        (
            [0] => red
            [1] => blue
            [2] => green
        )

)