Cover of the book Symfony 5: The Fast Track

Symfony 5: The Fast Track is the best book to learn modern Symfony development, from zero to production. +300 pages showcasing Symfony with Docker, APIs, queues & async tasks, Webpack, SPAs, etc.

PHP Array Cache Adapter

PHP Array Cache Adapter

This adapter is a high performance cache for static data (e.g. application configuration) that is optimized and preloaded into OPcache memory storage:

use Symfony\Component\Cache\Adapter\FilesystemAdapter;
use Symfony\Component\Cache\Adapter\PhpArrayAdapter;

// somehow, decide it's time to warm up the cache!
if ($needsWarmup) {
    // some static values
    $values = [
        'stats.products_count' => 4711,
        'stats.users_count' => 1356,

    $cache = new PhpArrayAdapter(
        // single file where values are cached
        __DIR__ . '/somefile.cache',
        // a backup adapter, if you set values after warmup
        new FilesystemAdapter()

// ... then, use the cache!
$cacheItem = $cache->getItem('stats.users_count');
echo $cacheItem->get();


This adapter requires PHP 7.x and should be used with the php.ini setting opcache.enable=On.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.