Neos\Neos\Command\WorkspaceCommandController::publishCommand PHP Method

    public function publishCommand($workspace, $targetWorkspace = null, $verbose = false, $dryRun = false)
    {
        $workspaceName = $workspace;
        $workspace = $this->workspaceRepository->findOneByName($workspaceName);
        if (!$workspace instanceof Workspace) {
            $this->outputLine('Workspace "%s" does not exist', [$workspaceName]);
            $this->quit(1);
        }
        if ($targetWorkspace === null) {
            $targetWorkspace = $workspace->getBaseWorkspace();
            $targetWorkspaceName = $targetWorkspace->getName();
        } else {
            $targetWorkspaceName = $targetWorkspace;
            $targetWorkspace = $this->workspaceRepository->findOneByName($targetWorkspaceName);
            if (!$targetWorkspace instanceof Workspace) {
                $this->outputLine('Target workspace "%s" does not exist', [$targetWorkspaceName]);
                $this->quit(2);
            }
            $possibleTargetWorkspaceNames = [];
            $baseWorkspace = $workspace->getBaseWorkspace();
            while ($targetWorkspace !== $baseWorkspace) {
                if ($baseWorkspace === null) {
                    $this->outputLine('The target workspace must be a base workspace of "%s".', [$targetWorkspaceName]);
                    if (count($possibleTargetWorkspaceNames) > 1) {
                        $this->outputLine('For "%s" possible target workspaces currently are: %s', [$workspaceName, implode(', ', $possibleTargetWorkspaceNames)]);
                    } else {
                        $this->outputLine('For "%s" the only possible target workspace currently is "%s".', [$workspaceName, reset($possibleTargetWorkspaceNames)]);
                    }
                    $this->quit(3);
                }
                $possibleTargetWorkspaceNames[] = $baseWorkspace->getName();
                $baseWorkspace = $baseWorkspace->getBaseWorkspace();
            }
        }
        try {
            $nodes = $this->publishingService->getUnpublishedNodes($workspace);
        } catch (\Exception $exception) {
            $this->outputLine('An error occurred while fetching unpublished nodes from workspace %s, publish aborted.', [$workspaceName]);
            $this->quit(1);
        }
        $this->outputLine('The workspace %s contains %u unpublished nodes.', [$workspaceName, count($nodes)]);
        foreach ($nodes as $node) {
            /** @var NodeInterface $node */
            if ($verbose) {
                $this->outputLine('    ' . $node->getPath());
            }
            if (!$dryRun) {
                $this->publishingService->publishNode($node, $targetWorkspace);
            }
        }
        if (!$dryRun) {
            $this->outputLine('Published all nodes in workspace %s to workspace %s', [$workspaceName, $targetWorkspaceName]);
        }
    }