user.php

См. документацию.

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

    public static function getUserNameByIdAction(int $userId): string
    {
        $res = UserTable::getList([
            'select' => [
                'NAME',
                'LAST_NAME'
            ],
            'filter' => [
                'ID' => $userId
            ]
        ]);
        $row = $res->fetch();
        $result = new PublicActionResult();
        $result->setResult([
            'NAME' => \CUser::formatName(
                \CSite::getNameFormat(false),
                $row, true, false
            )
        ]);
        return $result->getResult()['NAME'];
    }

    public static function getUsersInfoAction(array $setUserId): array
    {
        $res = UserTable::getList([
            'select' => [
                'NAME',
                'LAST_NAME',
                'PERSONAL_PHOTO',
            ],
            'filter' => [
                'ID' => $setUserId
            ]
        ]);
        $setName = [];
        $personalPhoto = [];
 
        while ($row = $res->fetch())
        {
            $name = new PublicActionResult();
            $name->setResult([
                'NAME' => \CUser::formatName(
                    \CSite::getNameFormat(false),
                    $row, true, false
                )
            ]);
            $setName[] = $name->getResult()['NAME'];
            if ($row['PERSONAL_PHOTO'])
            {
                $personalPhoto[] = $row['PERSONAL_PHOTO'];
            }
            else
            {
                $personalPhoto[] = null;
            }
        }
 
        $data = [];
        $data['name'] = $setName;
        $data['personalPhoto'] = $personalPhoto;
 
        return $data;
    }
}