Getting Started with Php and Redis

In order to use Redis with PHP you will need a PHP Redis client. In the following sections, we will demonstrate the use of PhpRedis, a flexible and feature-complete Redis client library for PHP. Additional PHP clients for Redis can be found under the PHP section of the Redis Clients page

Clone the repository

git clone https://github.com/redis-developer/redis-php-getting-started

Installing PhpRedis

On Linux System

PhpRedis’ installation instructions are given in its INSTALL.markdown file. The recommended method for installing PhpRedis is to use pecl.

Get pecl:

apt install pkg-php-tools

Install PhpRedis:

pecl install redis

You can also download the latest PhpRedis release from the GitHub repository.

Opening a Connection to Redis Using PhpRredis

The following code creates a connection to Redis using PhpRredis:

<?php
 
$redis = new Redis();
//Connecting to Redis
$redis->connect('hostname', port);
$redis->auth('password');
 
if ($redis->ping()) {
        echo "PONGn";
}
 
?>

To adapt this example to your code, make sure that you replace the following values with those of your database:

In line 5, hostname, port

should refer to your database’s hostname or IP address and your database’s port

In line 6, password

should be your database’s password

Using OSS Cluster API with PhpRedis

The above example can be modified to support working with OSS Cluster API

$redis = new RedisCluster(NULL, Array("host:port", "host:port", 
"host:port"), 2, 1.5, true, "password");

Where

host:port should be your database’s endpoint details

2, 1.5 defines the read/write timeout

true defines using persistent connection to each node in the cluster

password should be your database’s password

Reading and Writing Data with PhpRedis

Once connected to Redis, you can start reading and writing data. The following code snippet writes the value

bar

to the Redis key

foo

reads it back, and prints it:

// open a connection to Redis
...
 
$redis->set("foo", "bar");
var_dump($redis->get("foo"));
The output of the above code should be:

$ php foo.php
PONG
string(3) "bar"