使用 Redis 存储数据数组(来自 Laravel) [英] Storing an array of data using Redis (from Laravel)

问题描述

我已经开始使用 Laravel.工作很有趣.我已经开始使用 Laravel 的功能了.我已经开始使用 redis 通过在我的系统中安装 redis 服务器并更改 app/config/database.php 文件中的 redis 配置.通过使用 set，redis 可以很好地处理单个变量.即，

$redis = Redis::connection();$redis->set('name', 'Test');

我可以通过使用获得价值

$redis->get('name');

但我想使用 set 函数来设置数组.如果我尝试这样做，则会出现以下错误

 strlen() 期望参数 1 是字符串，给定数组

我已尝试使用以下代码.

$redis->set('name', array(5, 10));$values = $redis->lrange('names', array(5, 10));

如果我使用

$values = $redis->command('lrange', array(5, 10));

出现以下错误

 'command' 不是注册的 Redis 命令

任何人都可以向我解释这个问题吗?redis 可以吗?...我们可以使用 redis 设置数组值吗?

解决方案

这已经在评论中回答了，但为了让以后访问的人更清楚地回答.

Redis 与语言无关，因此它不会识别特定于 PHP 或任何其他语言的任何数据类型.最简单的方法是 serialise/json_encode 数据集，然后 unserialise/json_decode 获取.

使用 json_encode 存储数据的示例:

使用 IlluminateSupportFacadesRedis;$redis = Redis::connection();$redis->set('user_details', json_encode(['first_name' =>'亚历克斯','姓氏' =>理查兹"]));

使用 json_decode 检索数据的示例:

使用 IlluminateSupportFacadesRedis;$redis = Redis::connection();$response = $redis->get('user_details');$response = json_decode($response);

I have started to work with laravel. It is quite interesting to work. I have started to use the features of laravel. I have started to use redis by install redis server in my system and change the configuration for redis in app/config/database.php file. The redis is working fine for the single variables by using set. i.e.,

$redis = Redis::connection();

$redis->set('name', 'Test');

and i could able to get the value by using

$redis->get('name');

But i want to set the array by using set function. If i try do that getting the following error

 strlen() expects parameter 1 to be string, array given 

I have tried by using following codes.

$redis->set('name', array(5, 10));

$values = $redis->lrange('names', array(5, 10));

and if i use

$values = $redis->command('lrange', array(5, 10));

getting the following error

 'command' is not a registered Redis command 

Can any one explain me the problem and is that possible with redis?...we can set the array values using redis ?

解决方案

This has been answered in the comments but to make the answer clearer for people visiting in the future.

Redis is language agnostic so it won't recognise any datatype specific to PHP or any other language. The easiest way would be to serialise / json_encode the data on set then unserialise/json_decode on get.

Example to store data using json_encode:

use IlluminateSupportFacadesRedis;

$redis = Redis::connection();

$redis->set('user_details', json_encode([
        'first_name' => 'Alex', 
        'last_name' => 'Richards'
    ])
);

Example to retrieve data using json_decode:

use IlluminateSupportFacadesRedis;

$redis    = Redis::connection();
$response = $redis->get('user_details');

$response = json_decode($response);

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