App\Auth\Auth::attempt PHP Method

    public function attempt($email, $password)
    {
        $user = User::where('email', $email)->first();
        if (!$user) {
            return false;
        }
        if (password_verify($password, $user->password)) {
            $_SESSION['user'] = $user->id;
            return true;
        }
        return false;
    }