Was ist die einfachste Formularvalidierungsbibliothek in PHP für Programmierer?

<code class="php">class FormValidator
{
    public static $regexes = [
        // Define various validation patterns
        'date' => '/^[0-9]{4}[-/][0-9]{1,2}[-/][0-9]{1,2}$/',
        'amount' => '/^[0-9]+$/',
        // ...
    ];

    private $validations, $sanatations, $mandatories, $errors, $corrects, $fields;

    public function __construct($validations = [], $mandatories = [], $sanatations = [])
    {
        // Initialize class properties
    }

    public function validate($items)
    {
        // Perform validation on array items and return validation result
    }

    // ...
}</code>

<code class="php">$validations = ['name' => 'anything', 'email' => 'email', ...];
$required = ['name', 'email', ...];
$sanatize = ['alias'];

$validator = new FormValidator($validations, $required, $sanatize);

if ($validator->validate($_POST)) {
    $_POST = $validator->sanatize($_POST);
    // Process form submission
} else {
    // Handle validation errors
}</code>