eZ\Publish\Core\Repository\UserService::updateUser PHP Method

    public function updateUser(APIUser $user, UserUpdateStruct $userUpdateStruct)
    {
        $loadedUser = $this->loadUser($user->id);
        // We need to determine if we have anything to update.
        // UserUpdateStruct is specific as some of the new content is in
        // content update struct and some of it is in additional fields like
        // email, password and so on
        $doUpdate = false;
        foreach ($userUpdateStruct as $propertyValue) {
            if ($propertyValue !== null) {
                $doUpdate = true;
                break;
            }
        }
        if (!$doUpdate) {
            // Nothing to update, so we just quit
            return $user;
        }
        if ($userUpdateStruct->email !== null) {
            if (!is_string($userUpdateStruct->email) || empty($userUpdateStruct->email)) {
                throw new InvalidArgumentValue('email', $userUpdateStruct->email, 'UserUpdateStruct');
            }
            if (!ezcMailTools::validateEmailAddress($userUpdateStruct->email)) {
                throw new InvalidArgumentValue('email', $userUpdateStruct->email, 'UserUpdateStruct');
            }
        }
        if ($userUpdateStruct->password !== null && (!is_string($userUpdateStruct->password) || empty($userUpdateStruct->password))) {
            throw new InvalidArgumentValue('password', $userUpdateStruct->password, 'UserUpdateStruct');
        }
        if ($userUpdateStruct->enabled !== null && !is_bool($userUpdateStruct->enabled)) {
            throw new InvalidArgumentValue('enabled', $userUpdateStruct->enabled, 'UserUpdateStruct');
        }
        if ($userUpdateStruct->maxLogin !== null && !is_int($userUpdateStruct->maxLogin)) {
            throw new InvalidArgumentValue('maxLogin', $userUpdateStruct->maxLogin, 'UserUpdateStruct');
        }
        $contentService = $this->repository->getContentService();
        if (!$this->repository->canUser('content', 'edit', $loadedUser)) {
            throw new UnauthorizedException('content', 'edit');
        }
        $this->repository->beginTransaction();
        try {
            $publishedContent = $loadedUser;
            if ($userUpdateStruct->contentUpdateStruct !== null) {
                $contentDraft = $contentService->createContentDraft($loadedUser->getVersionInfo()->getContentInfo());
                $contentDraft = $contentService->updateContent($contentDraft->getVersionInfo(), $userUpdateStruct->contentUpdateStruct);
                $publishedContent = $contentService->publishVersion($contentDraft->getVersionInfo());
            }
            if ($userUpdateStruct->contentMetadataUpdateStruct !== null) {
                $contentService->updateContentMetadata($publishedContent->getVersionInfo()->getContentInfo(), $userUpdateStruct->contentMetadataUpdateStruct);
            }
            $this->userHandler->update(new SPIUser(array('id' => $loadedUser->id, 'login' => $loadedUser->login, 'email' => $userUpdateStruct->email ?: $loadedUser->email, 'passwordHash' => $userUpdateStruct->password ? $this->createPasswordHash($loadedUser->login, $userUpdateStruct->password, $this->settings['siteName'], $this->settings['hashType']) : $loadedUser->passwordHash, 'hashAlgorithm' => $this->settings['hashType'], 'isEnabled' => $userUpdateStruct->enabled !== null ? $userUpdateStruct->enabled : $loadedUser->enabled, 'maxLogin' => $userUpdateStruct->maxLogin !== null ? (int) $userUpdateStruct->maxLogin : $loadedUser->maxLogin)));
            $this->repository->commit();
        } catch (Exception $e) {
            $this->repository->rollback();
            throw $e;
        }
        return $this->loadUser($loadedUser->id);
    }