Neos\Neos\Controller\Module\Management\WorkspacesController::computeSiteChanges PHP Method

    protected function computeSiteChanges(Workspace $selectedWorkspace)
    {
        $siteChanges = [];
        foreach ($this->publishingService->getUnpublishedNodes($selectedWorkspace) as $node) {
            /** @var NodeInterface $node */
            if (!$node->getNodeType()->isOfType('Neos.Neos:ContentCollection')) {
                $pathParts = explode('/', $node->getPath());
                if (count($pathParts) > 2) {
                    $siteNodeName = $pathParts[2];
                    $q = new FlowQuery([$node]);
                    $document = $q->closest('[instanceof Neos.Neos:Document]')->get(0);
                    // $document will be null if we have a broken root line for this node. This actually should never happen, but currently can in some scenarios.
                    if ($document !== null) {
                        $documentPath = implode('/', array_slice(explode('/', $document->getPath()), 3));
                        $relativePath = str_replace(sprintf(SiteService::SITES_ROOT_PATH . '/%s/%s', $siteNodeName, $documentPath), '', $node->getPath());
                        if (!isset($siteChanges[$siteNodeName]['siteNode'])) {
                            $siteChanges[$siteNodeName]['siteNode'] = $this->siteRepository->findOneByNodeName($siteNodeName);
                        }
                        $siteChanges[$siteNodeName]['documents'][$documentPath]['documentNode'] = $document;
                        $change = ['node' => $node, 'contentChanges' => $this->renderContentChanges($node)];
                        if ($node->getNodeType()->isOfType('Neos.Neos:Node')) {
                            $change['configuration'] = $node->getNodeType()->getFullConfiguration();
                        }
                        $siteChanges[$siteNodeName]['documents'][$documentPath]['changes'][$relativePath] = $change;
                    }
                }
            }
        }
        $liveContext = $this->contextFactory->create(['workspaceName' => 'live']);
        ksort($siteChanges);
        foreach ($siteChanges as $siteKey => $site) {
            foreach ($site['documents'] as $documentKey => $document) {
                $liveDocumentNode = $liveContext->getNodeByIdentifier($document['documentNode']->getIdentifier());
                $siteChanges[$siteKey]['documents'][$documentKey]['isMoved'] = $liveDocumentNode && $document['documentNode']->getPath() !== $liveDocumentNode->getPath();
                $siteChanges[$siteKey]['documents'][$documentKey]['isNew'] = $liveDocumentNode === null;
                foreach ($document['changes'] as $changeKey => $change) {
                    $liveNode = $liveContext->getNodeByIdentifier($change['node']->getIdentifier());
                    $siteChanges[$siteKey]['documents'][$documentKey]['changes'][$changeKey]['isNew'] = is_null($liveNode);
                    $siteChanges[$siteKey]['documents'][$documentKey]['changes'][$changeKey]['isMoved'] = $liveNode && $change['node']->getPath() !== $liveNode->getPath();
                }
            }
            ksort($siteChanges[$siteKey]['documents']);
        }
        return $siteChanges;
    }