PhpCaptcha::CaseInsensitive PHP Method

    function CaseInsensitive($bCaseInsensitive)
    {
        $this->bCaseInsensitive = $bCaseInsensitive;
    }

 */
include_once 'core/config.php';
if (defined(C_CAPTCHA_ENABLE) && C_CAPTCHA_ENABLE == 'true') {
    include_once 'core/3rdparty/captcha/php-captcha.inc.php';
    $fonts = 'core/3rdparty/captcha/fonts/';
    $aFonts = array($fonts . 'VeraBd.ttf', $fonts . 'VeraIt.ttf', $fonts . 'Vera.ttf');
    $captcha = new PhpCaptcha($aFonts, 200, 60);
    //Set user options
    $captcha->SetWidth(C_CAPTCHA_WIDTH);
    $captcha->SetHeight(C_CAPTCHA_HEIGHT);
    $captcha->SetNumChars(C_CAPTCHA_CHARACTERS);
    $captcha->SetNumLines(C_CAPTCHA_LINES);
    if (C_CAPTCHA_ENABLE_SHADOWS === 'true') {
        $captcha->DisplayShadow(true);
    }
    if (C_CAPTCHA_OWNER_TEXT === 'true') {
        $captcha->SetOwnerText(BLOGURL);
    }
    $captcha->SetCharSet(C_CAPTCHA_CHARACTER_SET);
    if (C_CAPTCHA_CASE_INSENSITIVE === 'true') {
        $captcha->CaseInsensitive(true);
    }
    //$captcha->SetEdith(C_CAPTCHA_WIDTH);
    $captcha->SetMinFontSize(C_CAPTCHA_MIN_FONT);
    $captcha->SetMaxFontSize(C_CAPTCHA_MAX_FONT);
    if (C_CAPTCHA_USE_COLOR === 'true') {
        $captcha->UseColour(true);
    }
    $captcha->SetFileType(C_CAPTCHA_GRAPHIC_TYPE);
    $captcha->Create();
}