Psr16 is a standard for cache in PHP with less verbosity than Psr6.
You can just instantiate the cache engine and use it as you can see below.
<?php
$cacheEngine = new \ByJG\Cache\Psr16\FileSystemCacheEngine();
$result = $cacheEngine->get($key);
if (!empty($result))
{
// Do the operations will be cached
// ....
// And set variable result
$result = "...";
// Set the cache:
$cacheEngine->set($key, $result, 60);
}
return $result;