[apcu_cache_info](<http://php.net/manual/en/function.apcu-cache-info.php>)
provides information about the store and its entries:
print_r(apcu_cache_info());
Note that invoking apcu_cache_info() without limit will return the complete data currently stored.
To only get the meta data, use apcu_cache_info(true)
.
To get information about certain cache entries better use APCUIterator
.