setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// create table if not exists
$pdo->exec("
CREATE TABLE IF NOT EXISTS users (
id INTEGER PRIMARY KEY AUTOINCREMENT,
username TEXT UNIQUE NOT NULL,
password TEXT NOT NULL,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP
)
");
} catch (Exception $e) {
die("DB Error: " . $e->getMessage());
}
$err = "";
$ok = "";
// Regex password: minimal 6, huruf + angka
function password_valid($p) {
return preg_match('/^(?=.*[A-Za-z])(?=.*\d).{6,}$/', $p);
}
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$user = trim($_POST['username'] ?? '');
$pass = $_POST['password'] ?? '';
$pass2 = $_POST['password_confirm'] ?? '';
if ($user === '' || $pass === '' || $pass2 === '') {
$err = "Semua field harus diisi.";
} elseif ($pass !== $pass2) {
$err = "Konfirmasi password tidak cocok.";
} elseif (!password_valid($pass)) {
$err = "Password minimal 6 karakter, harus mengandung huruf & angka.";
} else {
try {
$hash = password_hash($pass, PASSWORD_DEFAULT);
$stmt = $pdo->prepare("INSERT INTO users (username, password) VALUES (:u, :p)");
$stmt->execute([':u' => $user, ':p' => $hash]);
$ok = "Registrasi berhasil, silakan login.";
} catch (PDOException $e) {
if ($e->getCode() == "23000") {
$err = "Username sudah digunakan.";
} else {
$err = "Error: " . $e->getMessage();
}
}
}
}
?>
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