Redis with Predis (PHP)

Uses Predis 3.7. The code is an ordinary application for the original database; nothing in it knows about MachNoSQL.

The only change

redis://:secret@redis.example.com:6379/0
redis://:secret@machnosql.example.com:6379/0

The address comes from the environment variable REDIS_URL, so switching to MachNoSQL changes configuration only.

Run

export REDIS_URL='redis://:secret@machnosql.example.com:6379/0'
composer install
php app.php

Source

The program as it is kept and tested in the Mach Database NoSQL repository; highlighted lines read the connection setting.

app.php

<?php
// Cache, counter, session and leaderboard on Redis, unchanged on MachNoSQL.
require __DIR__ . '/vendor/autoload.php';

$redis = new Predis\Client(getenv('REDIS_URL'));

$redis->set('cache:home', '<html>...</html>', 'EX', 60);
echo 'cached: ', $redis->get('cache:home'), ' ttl: ', $redis->ttl('cache:home'), PHP_EOL;

echo 'views: ', $redis->incr('views:home'), PHP_EOL;

$redis->hset('session:42', 'user', 'ada', 'cart_items', 3);
print_r($redis->hgetall('session:42'));

$redis->zadd('leaderboard', ['ada' => 120, 'linus' => 95, 'grace' => 130]);
print_r($redis->zrevrange('leaderboard', 0, 2, ['withscores' => true]));

$results = $redis->transaction(function ($tx) {
    $tx->incr('orders:count');
    $tx->lpush('orders:recent', 'order-1001');
    $tx->ltrim('orders:recent', 0, 99);
});
print_r($results);

composer.json

{
  "name": "example/machnosql-redis-predis",
  "require": {
    "php": ">=8.3",
    "predis/predis": "^3.7"
  }
}