Redis with phpredis (PHP extension)

Uses the redis PHP extension 6.3. The code is an ordinary application for the original database; nothing in it knows about MachNoSQL.

The only change

REDIS_HOST=redis.example.com
REDIS_HOST=machnosql.example.com

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

Run

export REDIS_HOST='machnosql.example.com'
pecl install redis
export REDIS_PASSWORD=secret
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.
// phpredis takes host, port and password separately; they come from the environment.

$redis = new Redis();
$redis->connect(getenv('REDIS_HOST'), (int) (getenv('REDIS_PORT') ?: 6379));
if (getenv('REDIS_PASSWORD') !== false) {
    $redis->auth(getenv('REDIS_PASSWORD'));
}

$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;

$redis->hMSet('session:42', ['user' => 'ada', 'cart_items' => 3]);
print_r($redis->hGetAll('session:42'));

$redis->zAdd('leaderboard', 120, 'ada', 95, 'linus', 130, 'grace');
print_r($redis->zRevRange('leaderboard', 0, 2, true));

$results = $redis->multi()
    ->incr('orders:count')
    ->lPush('orders:recent', 'order-1001')
    ->lTrim('orders:recent', 0, 99)
    ->exec();
print_r($results);