Flarum\Api\Controller\UploadFaviconController::data PHP Метод

    public function data(ServerRequestInterface $request, Document $document)
    {
        $this->assertAdmin($request->getAttribute('actor'));
        $file = array_get($request->getUploadedFiles(), 'favicon');
        $tmpFile = tempnam($this->app->storagePath() . '/tmp', 'favicon');
        $file->moveTo($tmpFile);
        $extension = pathinfo($file->getClientFilename(), PATHINFO_EXTENSION);
        if ($extension !== 'ico') {
            $manager = new ImageManager();
            $encodedImage = $manager->make($tmpFile)->resize(64, 64, function ($constraint) {
                $constraint->aspectRatio();
                $constraint->upsize();
            })->encode('png');
            file_put_contents($tmpFile, $encodedImage);
            $extension = 'png';
        }
        $mount = new MountManager(['source' => new Filesystem(new Local(pathinfo($tmpFile, PATHINFO_DIRNAME))), 'target' => new Filesystem(new Local($this->app->publicPath() . '/assets'))]);
        if (($path = $this->settings->get('favicon_path')) && $mount->has($file = "target://{$path}")) {
            $mount->delete($file);
        }
        $uploadName = 'favicon-' . Str::lower(Str::quickRandom(8)) . '.' . $extension;
        $mount->move('source://' . pathinfo($tmpFile, PATHINFO_BASENAME), "target://{$uploadName}");
        $this->settings->set('favicon_path', $uploadName);
        return parent::data($request, $document);
    }