currentuser.php

См. документацию.

<?php
 
namespace Bitrix\Main\Engine;
 
use CUser;
 
final class CurrentUser
{
    private $cuser;

    protected function __construct()
    {
    }

    public static function className(): string
    {
        return self::class;
    }

    public static function get(): self
    {
        global $USER;
 
        $self = new self();
        if ($USER instanceof \CUser)
        {
            $self->cuser = $USER;
        }
 
        return $self;
    }

    public function getId()
    {
        return $this->cuser?->getId();
    }

    public function getLogin()
    {
        return $this->cuser?->getLogin();
    }

    public function getEmail()
    {
        return $this->cuser?->getEmail();
    }

    public function getFullName()
    {
        return $this->cuser?->getFullName();
    }

    public function getFirstName()
    {
        return $this->cuser?->getFirstName();
    }

    public function getLastName()
    {
        return $this->cuser?->getLastName();
    }

    public function getSecondName()
    {
        return $this->cuser?->getSecondName();
    }

    public function getUserGroups(): array
    {
        $groups = $this->cuser?->getUserGroupArray();
        return is_array($groups) ? $groups : [];
    }

    public function getFormattedName(): string
    {
        return (string)$this->cuser?->getFormattedName(false, false);
    }

    public function canDoOperation($operationName): bool
    {
        return (bool)$this->cuser?->canDoOperation($operationName);
    }

    public function isAdmin(): bool
    {
        return (bool)$this->cuser?->isAdmin();
    }
}