FluidTYPO3\Vhs\ViewHelpers\Format\CaseViewHelper::render PHP Метод

    public function render($string = null, $case = null)
    {
        if (null === $string) {
            $string = $this->renderChildren();
        }
        if ('BE' === TYPO3_MODE) {
            $tsfeBackup = FrontendSimulationUtility::simulateFrontendEnvironment();
        }
        $charset = $GLOBALS['TSFE']->renderCharset;
        switch ($case) {
            case self::CASE_LOWER:
                $string = $GLOBALS['TSFE']->csConvObj->conv_case($charset, $string, 'toLower');
                break;
            case self::CASE_UPPER:
                $string = $GLOBALS['TSFE']->csConvObj->conv_case($charset, $string, 'toUpper');
                break;
            case self::CASE_UCWORDS:
                $string = ucwords($string);
                break;
            case self::CASE_UCFIRST:
                $string = $GLOBALS['TSFE']->csConvObj->convCaseFirst($charset, $string, 'toUpper');
                break;
            case self::CASE_LCFIRST:
                $string = $GLOBALS['TSFE']->csConvObj->convCaseFirst($charset, $string, 'toLower');
                break;
            case self::CASE_CAMELCASE:
                $string = GeneralUtility::underscoredToUpperCamelCase($string);
                break;
            case self::CASE_LOWERCAMELCASE:
                $string = GeneralUtility::underscoredToLowerCamelCase($string);
                break;
            case self::CASE_UNDERSCORED:
                $string = GeneralUtility::camelCaseToLowerCaseUnderscored($string);
                break;
            default:
                break;
        }
        if ('BE' === TYPO3_MODE) {
            FrontendSimulationUtility::resetFrontendEnvironment($tsfeBackup);
        }
        return $string;
    }