Mediamanager\Controller\Mediamanager::upload PHP Метод

    protected function upload()
    {
        $files = isset($_FILES['files']) ? $_FILES['files'] : [];
        $path = $this->param('path', false);
        $targetpath = $this->root . '/' . trim($path, '/');
        $uploaded = [];
        $failed = [];
        if (isset($files['name']) && $path && file_exists($targetpath)) {
            for ($i = 0; $i < count($files['name']); $i++) {
                // clean filename
                $clean = preg_replace('/[^a-zA-Z0-9-_\\.]/', '', str_replace(' ', '-', $files['name'][$i]));
                if (!$files['error'][$i] && move_uploaded_file($files['tmp_name'][$i], $targetpath . '/' . $clean)) {
                    $uploaded[] = $files['name'][$i];
                } else {
                    $failed[] = $files['name'][$i];
                }
            }
        }
        return json_encode(['uploaded' => $uploaded, 'failed' => $failed]);
    }