In PHP, how do I hash arrays with strong typing?

In PHP, you can hash arrays with strong typing using built-in functions like `array_map` and type declarations. This approach ensures that only the correct types are processed during the hash generation.

Here's an example demonstrating this concept:


        <?php
        declare(strict_types=1);

        function hashArray(array $arr): array {
            return array_map(function ($item) {
                return hash('sha256', $item);
            }, $arr);
        }

        $data = ['apple', 'banana', 'cherry'];
        $hashedData = hashArray($data);

        print_r($hashedData);
        ?>