MINI

files >> C:/xampp/htdocs/voucher_app/code.php
 <?php
// Konfigurasi Database
define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', '');
define('DB_NAME', 'voucher_db');

// Membuat koneksi
$conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);

// Cek koneksi
if ($conn->connect_error) {
    die("Koneksi gagal: " . $conn->connect_error);
}

// Set header untuk JSON
header('Content-Type: application/json');

// Ambil dan sanitasi input
$user = $conn->real_escape_string($_POST['user'] ?? '');
$voucher = $conn->real_escape_string($_POST['voucher'] ?? '');
$amount = floatval($_POST['amount'] ?? 0);
$type = in_array($_POST['type'] ?? '', ['in', 'out']) ? $_POST['type'] : '';

// Validasi input
$errors = [];
if(empty($user)) $errors[] = "Nama pengguna harus diisi";
if(empty($voucher)) $errors[] = "Kode voucher harus diisi";
if($amount <= 0) $errors[] = "Jumlah saldo harus lebih dari 0";
if(empty($type)) $errors[] = "Tipe transaksi harus dipilih";

if(!empty($errors)) {
    header("Location: index.php?error=" . urlencode(implode(", ", $errors)));
    exit();
}

try {
    // Mulai transaksi
    $conn->begin_transaction();
    
    // Siapkan dan jalankan query
    $stmt = $conn->prepare("INSERT INTO transactions (user, voucher, amount, type) VALUES (?, ?, ?, ?)");
    $stmt->bind_param("ssds", $user, $voucher, $amount, $type);
    
    if ($stmt->execute()) {
        $conn->commit();
        header("Location: index.php?success=1");
    } else {
        throw new Exception("Gagal menyimpan transaksi: " . $stmt->error);
    }
} catch (Exception $e) {
    $conn->rollback();
    header("Location: index.php?error=" . urlencode($e->getMessage()));
} finally {
    $stmt->close();
    $conn->close();
}