TYPO3 PageModule Enhancements

ext_localconf.php

<?php

defined('TYPO3') || die('Access denied.');

// Hook into page module
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['cms/layout/db_layout.php']['drawHeaderHook'][] = \My\Extension\Hooks\PageModuleHook::class . '->info';

PageModuleHook.php

<?php

namespace My\Extension\Hooks;

use TYPO3\CMS\Backend\Controller\PageLayoutController;
use TYPO3\CMS\Backend\View\BackendLayoutView;
use TYPO3\CMS\Core\Utility\GeneralUtility;

class PageModuleHook
{
    public function info(array $params, PageLayoutController $controller)
    {
        $beLayout = GeneralUtility::makeInstance(BackendLayoutView::class)->getBackendLayoutForPage($controller->id);
        $beLayoutTitle = $beLayout->getTitle();
        $beLayoutTitle = $GLOBALS['LANG']->sL($beLayoutTitle) ?? $beLayoutTitle;

        return '<h3>BE-Layout: ' . $beLayoutTitle . '</h3>';
    }
}