$cache_id = getCacheId('my_data');
$user_id = 123; $cache_id = getCacheId('user_' . $user_id);This function is part of the PHP Cache package, which is a library that provides a simple and efficient way to cache data in PHP applications. The package provides a variety of caching mechanisms, including filesystem caching, in-memory caching, and remote caching through popular services like Memcached and Redis.