Cachearium\Backend\CacheAPC::delete PHP Method

    public function delete($base, $id, $sub = LH_DEFAULT_CACHE_ID)
    {
        if (!is_string($sub)) {
            $sub = md5(serialize($sub));
        }
        $this->checkValidArgs($base, $id, $sub);
        $key = (new CacheKey($base, $id, $sub))->getHash();
        apc_delete($key);
        return true;
    }