MySQL::HasRecords PHP Method

    public function HasRecords($sql = "")
    {
        if (strlen($sql) > 0) {
            $this->Query($sql);
            if ($this->Error()) {
                return false;
            }
        }
        if ($this->RowCount() > 0) {
            return true;
        } else {
            return false;
        }
    }

/** Đăng nhập admin cp */
function admin_cp_login()
{
    global $hmuser;
    $hmdb = new MySQL(true, DB_NAME, DB_HOST, DB_USER, DB_PASSWORD, DB_CHARSET);
    hook_action('admin_cp_login');
    $user_login = hm_post('login');
    $password = hm_post('password');
    $logmein = hm_post('log-me-in');
    if (is_numeric($logmein)) {
        $tableName = DB_PREFIX . "users";
        $whereArray = array('user_login' => MySQL::SQLValue($user_login));
        $hmdb->SelectRows($tableName, $whereArray);
        if ($hmdb->HasRecords()) {
            $row = $hmdb->Row();
            $salt = $row->salt;
            $user_pass = $row->user_pass;
            $password_encode = hm_encode_str(md5($password . $salt));
            if ($password_encode == $user_pass) {
                $time = time();
                $ip = hm_ip();
                $cookie_array = array('time' => $time, 'ip' => $ip, 'user_login' => $user_login, 'admincp' => 'yes');
                $cookie_user = hm_encode_str($cookie_array);
                setcookie('admin_login', $cookie_user, time() + COOKIE_EXPIRES, '/');
                $_SESSION['admin_login'] = $cookie_user;
                return json_encode(array('status' => 'success', 'mes' => _('Đăng nhập thành công')));
            } else {
                return json_encode(array('status' => 'error', 'mes' => _('Sai mật khẩu')));
            }
        } else {
            return json_encode(array('status' => 'error', 'mes' => _('Không có tài khoản này')));
        }
    }
}