composer require zappzarapp/security

use Zappzarapp\Security\Headers\Builder\SecurityHeadersBuilder;

$headers = SecurityHeadersBuilder::recommended()->build();
foreach ($headers as $name => $value) {
    header("{$name}: {$value}");
}

use Zappzarapp\Security\Csp\HeaderBuilder;
use Zappzarapp\Security\Csp\Directive\CspDirectives;
use Zappzarapp\Security\Csp\Nonce\NonceGenerator;

$generator = new NonceGenerator();
$csp = HeaderBuilder::build(CspDirectives::strict(), $generator);
header("Content-Security-Policy: {$csp}");

$nonce = $generator->get();
echo "<script nonce=\"{$nonce}\">console.log('Safe!');</script>";

use Zappzarapp\Security\Csrf\CsrfProtection;
use Zappzarapp\Security\Csrf\Storage\SessionCsrfStorage;

$csrf = new CsrfProtection(new SessionCsrfStorage());

// フォーム用トークンの生成
$token = $csrf->generateToken();
echo '<input type="hidden" name="_token" value="' . $token->value() . '">';

// 送信時の検証
if (!$csrf->validateToken($_POST['_token'])) {
    throw new Exception('CSRF validation failed');
}

use Zappzarapp\Security\Sanitization\Html\HtmlSanitizer;
use Zappzarapp\Security\Sanitization\Path\PathValidationConfig;
use Zappzarapp\Security\Sanitization\Path\PathValidator;

// HTMLのサニタイズ（危険なタグ/属性を削除）
$sanitizer = new HtmlSanitizer();
$safe = $sanitizer->sanitize($userInput);

// ファイルパスの検証（ディレクトリトラバーサル防止）
$validator = new PathValidator(new PathValidationConfig(basePath: '/var/www/uploads'));
if (!$validator->isSafe($userPath)) {
    throw new Exception('Invalid path');
}