landing.php

См. документацию.

<?php
 
namespace Bitrix\Landing\Controller;
 
use Bitrix\Landing\Landing as LandingCore;
use Bitrix\Main\Engine\Controller;
use Bitrix\Main\Engine;
 
class Landing extends Controller
{
    public function getDefaultPreFilters(): array
    {
        return [
            new Engine\ActionFilter\Authentication(),
            new ActionFilter\Extranet(),
        ];
    }

    public function getByIdAction(int $landingId): ?array
    {
        $res = LandingCore::getList([
            'select' => [
                '*',
            ],
            'filter' => [
                'ID' => $landingId,
            ],
        ]);
        if ($row = $res->fetch())
        {
            $row['ADDITIONAL_FIELDS'] = LandingCore::getAdditionalFieldsAsArray($landingId);
 
            return $row;
        }
 
        return null;
    }
}