Project Web 01 Kode Login.php
<?php
// login.php
session_start(); // Mulai session jika belum dimulai
// Redirect jika sudah login
if (isset($_SESSION['user_id'])) {
header("index.php");
exit();
}
// Sertakan file koneksi database
require_once 'conect.php';
$message = ""; // Untuk menampilkan pesan error/sukses
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$username_or_email = $_POST['username_or_email'];
$password = $_POST['password'];
// Validasi sederhana
if (empty($username_or_email) || empty($password)) {
$message = "<p style='color:red;'>Username/Email dan Password wajib diisi!</p>";
} else {
// Cari pengguna berdasarkan username atau email
$stmt = $conn->prepare("SELECT id, username, password FROM users WHERE username = ? OR email = ?");
$stmt->bind_param("ss", $username_or_email, $username_or_email);
$stmt->execute();
$result = $stmt->get_result(); // Gunakan get_result() untuk MySQLi
if ($result->num_rows == 1) {
$user = $result->fetch_assoc();
// Verifikasi password
if (password_verify($password, $user['password'])) {
// Login berhasil, buat session
session_regenerate_id(true); // Keamanan: regenerasi ID sesi
$_SESSION['user_id'] = $user['id'];
$_SESSION['username'] = $user['username'];
header("Location: index.php"); // Redirect ke halaman utama setelah login
exit();
} else {
$message = "<p style='color:red;'>Password salah!</p>";
}
} else {
$message = "<p style='color:red;'>Username atau email tidak ditemukan!</p>";
}
$stmt->close();
}
}
?>
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login Pengguna</title>
<link rel="stylesheet" href="style.css"> </head>
<body>
<div class="container">
<h2>Login Pengguna</h2>
<?php echo $message; ?>
<form action="login.php" method="POST">
<label for="username_or_email">Username atau Email:</label><br>
<input type="text" id="username_or_email" name="username_or_email" required><br><br>
<label for="password">Password:</label><br>
<input type="password" id="password" name="password" required><br><br>
<button type="submit">Login</button>
</form>
<p>Belum punya akun? <a href="register.php">Daftar di sini</a>.</p>
</div>
</body>
</html>
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