PHP Decode

<?php 
// Set header untuk JSON 
header('Content-Type: application/json'); 
header("Access-Control-Allow-Origin: *"); 
 
// Konfigurasi database 
$servername = "localhost"; 
$username = "root"; // sesuaikan dengan konfigurasi XAMPP kamu 
$password = ""; // sesuaikan dengan konfigurasi XAMPP kamu 
$dbname = "simple_api_db"; 
 
// Membuat koneksi ke database 
$conn = new mysqli($servername, $username, $password, $dbname); 
 
// Memeriksa koneksi 
if ($conn->connect_error) { 
    die(json_encode(['status' => 'error', 'message' => 'Database connection failed: ' . $conn->connect_error])); 
} 
 
// Menangkap data dari form 
if (isset($_POST['username']) && isset($_POST['password'])) { 
    $input_username = $_POST['username']; 
    $input_password = $_POST['password']; 
 
    // Query untuk menyimpan data pengguna 
    $sql = "INSERT INTO users (username, password) VALUES (?, ?)"; 
    $stmt = $conn->prepare($sql); 
    $stmt->bind_param("ss", $input_username, $input_password); 
 
    if ($stmt->execute()) { 
        echo json_encode(['status' => 'success', 'message' => 'User registered successfully']); 
    } else { 
        echo json_encode(['status' => 'error', 'message' => 'User registration failed']); 
    } 
 
    $stmt->close(); 
} else { 
    echo json_encode(['status' => 'error', 'message' => 'Username and password required']); 
} 
 
$conn->close(); 
 ?>