类中api返回方法封装

/**
     * API返回
     */
    function api_result($result)
    {
        if (is_string($result)){
            $result['flag'] = true;
            $result['code'] = 10000;
            $result['msg'] = '操作成功';
            $result['data'] = $result;
            $result['time'] = time();
            header('Content-Type:application/json; charset=utf-8');
            die(json_encode($result));
        }
        $result['flag'] = empty($result['code']) ? true: false;
        $result['code'] = empty($result['code']) ? 10000: $result['code'];
        $result['msg'] = empty($result['msg']) ? '操作成功': $result['msg'];
        $result['data'] = empty($result['data']) ? []: $result['data'];
        $result['time'] = time();
        header('Content-Type:application/json; charset=utf-8');
        die(json_encode($result));
    }