prepare("SELECT * FROM users WHERE email = ?"); $stmt->execute([$email]); $user = $stmt->fetch(); if ($user && password_verify($password, $user['password_hash'])) { $_SESSION['user_id'] = $user['id']; $_SESSION['username'] = $user['username']; $_SESSION['user_role'] = $user['role']; header("Location: index.php"); exit; } else { $message = '
Invalid email or password.
'; } } ?>

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