Account::truncateDataSetHistory PHP Method

truncateDataSetHistory() private method

Called after every save. This ensures the size of the history is truncated to whatever value is set (see the $maxDataSetHistorySize setting in Core.
private truncateDataSetHistory ( $configurationID )
$configurationID
    private function truncateDataSetHistory($configurationID)
    {
        $prefix = Core::getDbTablePrefix();
        $maxHistory = Core::getMaxDataSetHistorySize();
        if (empty($maxHistory) || !is_numeric($maxHistory)) {
            return;
        }
        // first, get the ID of the oldest saved history item, according to however large this
        $response = Core::$db->query("\n            SELECT *\n            FROM  {$prefix}configuration_history\n            WHERE configuration_id = {$configurationID}\n            ORDER BY history_id DESC\n            LIMIT 1\n            OFFSET {$maxHistory}\n        ");
        if ($response["success"] && !empty($response["results"])) {
            $results = mysqli_fetch_assoc($response["results"]);
            $historyID = $results["history_id"];
            Core::$db->query("\n              DELETE FROM {$prefix}configuration_history\n              WHERE configuration_id = {$configurationID} AND history_id <= {$historyID}\n            ");
        }
    }