Jamm\Memory\APCObject::del_old_cached PHP Метод

    protected function del_old_cached()
    {
        $t = time();
        $apc_user_info = apc_cache_info('user', true);
        if (!empty($apc_user_info['ttl'])) {
            $apc_ttl = $apc_user_info['ttl'] / 2;
            $check_period = $apc_ttl;
        }
        if (empty($check_period) || $check_period > 1800) {
            $check_period = 1800;
        }
        $ittl = new \APCIterator('user', '/^' . preg_quote($this->defragmentation_prefix) . '$/', APC_ITER_ATIME, 1);
        $cttl = $ittl->current();
        $previous_cleaning = $cttl[self::apc_arr_atime];
        if (empty($previous_cleaning) || $t - $previous_cleaning > $check_period) {
            apc_store($this->defragmentation_prefix, $t, $check_period);
            $this->del_old();
        }
        return true;
    }