Prado\Web\UI\ActiveControls\TActiveFileUpload::saveAs PHP Method

    public function saveAs($fileName, $deleteTempFile = true)
    {
        if ($this->getErrorCode() === UPLOAD_ERR_OK && file_exists($this->getLocalName())) {
            if ($deleteTempFile) {
                return rename($this->getLocalName(), $fileName);
            } else {
                return copy($this->getLocalName(), $fileName);
            }
        } else {
            return false;
        }
    }