Php and Redis

Find tutorials, examples and technical articles that will help you to develop with Redis and Php.

Getting Started

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.

Redis is an open source, in-memory, key-value data store most commonly used as a primary database, cache, message broker, and queue. Redis cache delivers sub-millisecond response times, enabling fast and powerful real-time applications in industries such as gaming, fintech, ad-tech, social media, healthcare, and IoT.

Step 1. Run a Redis server

You can either run Redis server in a Docker container or directly on your machine. Follow the below command to setup a Redis server locally on Mac OS:

brew tap redis-stack/redis-stack

brew install --cask redis-stack

INFO

Redis Stack unifies and simplifies the developer experience of the leading Redis modules and the capabilities they provide. Redis Stack bundles five Redis modules: RedisJSON, RedisSearch, RedisGraph, RedisTimeSeries, and RedisBloom. Learn more

Ensure that you are able to use the following Redis command to connect to the Redis instance.

redis-cli -h localhost -p 6379

localhost>

Now you should be able to perform CRUD operations with Redis keys. The above Redis client command might require password if you have setup authentication in your Redis configuration file. If a Redis password is not set, then it will perform the default connection to Redis server. You can play around inserting data to Redis using SET and then fetching it back with the GET command.

Step 2. Get pecl

apt install pkg-php-tools

Step 3. Install PhpRedis

pecl install redis

Step 4. Opening a Connection to Redis Using PhpRredis

The following code creates a connection to Redis using Phpredis

<?php

$redis = new Redis();

//Connecting to Redis

$redis->connect('hostname', port);

$redis->auth('password');

if ($redis->ping()) {

echo "PONGn";

}

?>

Replace the following values with those of your database and save this file as connect.php.

Step 5. Executing the script

php connect.php

It should display "PONG" as output. You can verify this by running the monitor command

127.0.0.1:6379> monitor

OK

1614778301.165001 [0 [::1]:57666] "PING"

Further Reference:

• Getting Started with Redis & Php
• PHP extension for Redis based on Hiredis
• Redis distributed locks in PHP
• Support for Redis Cluster
• Support for Redis Sentinel