core-bundle/src/Image/ImageSizes.php
public function getOptionsForUser(BackendUser $user): array
    {
        $this->loadOptions();

        if ($user->isAdmin) {
            $event = new ImageSizesEvent($this->options, $user);
        } else {
            $options = array_map(
                static function ($val) {
                    return is_numeric($val) ? (int) $val : $val;
                },
                StringUtil::deserialize($user->imageSizes, true)
            );

            $event = new ImageSizesEvent($this->filterOptions($options), $user);
        }

        $this->eventDispatcher->dispatch(ContaoCoreEvents::IMAGE_SIZES_USER, $event);

        return $event->getImageSizes();
    }
public function getOptionsForUser(BackendUser $user): array
    {
        $this->loadOptions();

        if ($user->isAdmin) {
            $event = new ImageSizesEvent($this->options, $user);
        } else {
            $options = array_map(
                static function ($val) {
                    return is_numeric($val) ? (int) $val : $val;
                },
                StringUtil::deserialize($user->imageSizes, true)
            );

            $event = new ImageSizesEvent($this->filterOptions($options), $user);
        }

        $this->eventDispatcher->dispatch(ContaoCoreEvents::IMAGE_SIZES_USER, $event);

        return $event->getImageSizes();
    }
Returns the image sizes for the given user suitable for widgets.

@return array<string,string[]>