predisHow do I use PHP to retrieve a value from Redis?

Using PHP to retrieve a value from Redis is quite simple. First, you will need to install the PHP Redis extension. Once installed, you can connect to a Redis server and retrieve a value.

Example code

<?php
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$value = $redis->get('my_key');
echo $value;
?>

The code above will connect to a Redis server on 127.0.0.1 port 6379 and retrieve the value of the key my_key. The output of the code would be the value of my_key.

The code consists of the following parts:

1. $redis = new Redis(); - This line creates a new Redis instance.
2. $redis->connect('127.0.0.1', 6379); - This line connects to a Redis server on 127.0.0.1 port 6379.
3. $value = $redis->get('my_key'); - This line retrieves the value of the key my_key.
4. echo $value; - This line prints out the value of my_key.

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