How to use php for redis

Question: How to use Redis in PHP? Install the Redis PHP extension. Connect to the Redis server and use the Redis class. Store and retrieve data, and support strings, hashs, lists, and collections. Use other commands such as checking for the existence of a key, deleting a key, and setting the expiration time of the key. Close the connection after using Redis.

How to use Redis in PHP

Redis is a highly scalable in-memory data structure storage system, and using it in PHP can greatly improve application performance.

Install the Redis PHP extension

Before using Redis, you need to install its extension in PHP. It can be done with the following command:

 <code># Ubuntu/Debian sudo apt-get install php-redis # CentOS/Red Hat sudo yum install php-redis</code>

Connect to the Redis server

Connecting to the Redis server is implemented using the Redis class:

 <code class="php">$redis = new Redis(); $redis->connect('localhost', 6379);</code>

Store and retrieve data

Redis supports the storage of multiple data types, including strings, hashs, lists, and collections. Here are some ways to store and retrieve data:

• Store strings:

   <code class="php">$redis->set('key', 'value');</code>

• Search string:

   <code class="php">$value = $redis->get('key');</code>

• Store hash:

   <code class="php">$redis->hset('user', 'name', 'John Doe');</code>

• Search hash:

   <code class="php">$name = $redis->hget('user', 'name');</code>

• Storage list:

   <code class="php">$redis->rpush('users', 'John Doe');</code>

• Search list:

   <code class="php">$users = $redis->lrange('users', 0, -1);</code>

Other common commands

Redis also provides a variety of other commands, including:

• Check if the key exists:

   <code class="php">$exists = $redis->exists('key');</code>

• Delete key:

   <code class="php">$redis->del('key');</code>

• Set the expiration time of the key:

   <code class="php">$redis->expire('key', 3600);</code>

Close the connection

After using Redis, be sure to close the connection:

 <code class="php">$redis->close();</code>

By using these methods, you can easily take advantage of the power of Redis in PHP.

The above is the detailed content of How to use php for redis. For more information, please follow other related articles on the PHP Chinese website!