Contao\FormCaptcha::getQuestion PHP Метод

    protected function getQuestion()
    {
        $int1 = rand(1, 9);
        $int2 = rand(1, 9);
        $question = $GLOBALS['TL_LANG']['SEC']['question' . rand(1, 3)];
        $question = sprintf($question, $int1, $int2);
        /** @var SessionInterface $objSession */
        $objSession = \System::getContainer()->get('session');
        $objSession->set('captcha_' . $this->strId, array('sum' => $int1 + $int2, 'key' => $this->strCaptchaKey, 'time' => time()));
        $strEncoded = '';
        $arrCharacters = Utf8::str_split($question);
        foreach ($arrCharacters as $strCharacter) {
            $strEncoded .= sprintf('&#%s;', Utf8::ord($strCharacter));
        }
        return $strEncoded;
    }