/** * Returns an array describing what data would be purged if both log data & report * purging is invoked. * * The returned array maps table names with the number of rows that will be deleted. * If the table name is mapped with -1, the table will be dropped. * * @param array $settings The config options to use in the estimate. If null, the real * options are used. * @return array */ public static function getPurgeEstimate($settings = null) { if (is_null($settings)) { $settings = self::getPurgeDataSettings(); } $result = array(); if ($settings['delete_logs_enable']) { $logDataPurger = Piwik_PrivacyManager_LogDataPurger::make($settings); $result = array_merge($result, $logDataPurger->getPurgeEstimate()); } if ($settings['delete_reports_enable']) { $reportsPurger = Piwik_PrivacyManager_ReportsPurger::make($settings, self::getAllMetricsToKeep()); $result = array_merge($result, $reportsPurger->getPurgeEstimate()); } return $result; }