Piwik\Plugins\API\API::getReportMetadata PHP Method

    public function getReportMetadata($idSites = '', $period = false, $date = false, $hideMetricsDoc = false, $showSubtableReports = false, $idSite = false)
    {
        if (empty($idSite) && !empty($idSites)) {
            if (is_array($idSites)) {
                $idSite = array_shift($idSites);
            } else {
                $idSite = $idSites;
            }
        } elseif (empty($idSite) && empty($idSites)) {
            throw new \Exception('Calling API.getReportMetadata without any idSite is no longer supported since Piwik 3.0.0. Please specifiy at least one idSite via the "idSite" parameter.');
        }
        Piwik::checkUserHasViewAccess($idSite);
        $metadata = $this->processedReport->getReportMetadata($idSite, $period, $date, $hideMetricsDoc, $showSubtableReports);
        return $metadata;
    }