Buat file update.php untuk memperbarui data pengguna.

<?php
include 'db.php';

$id = $_GET['id'];

$sql = "SELECT * FROM users WHERE id=$id";
$result = $conn->query($sql);
$user = $result->fetch_assoc();
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Update User</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container mt-5">
    <h2 class="mb-4">Update User</h2>

    <form action="update_process.php" method="post">
        <input type="hidden" name="id" value="<?php echo $user['id']; ?>">
        <div class="mb-3">
            <label for="name" class="form-label">Name</label>
            <input type="text" class="form-control" id="name" name="name" value="<?php echo $user['name']; ?>" required>
        </div>
        <div class="mb-3">
            <label for="email" class="form-label">Email</label>
            <input type="email" class="form-control" id="email" name="email" value="<?php echo $user['email']; ?>" required>
        </div>
        <button type="submit" class="btn btn-primary">Update User</button>
    </form>
</div>
</body>
</html>