session_start(); $captchaValidierungOk="false;" if (ereg('^[a-z]{4}$', $_POST['captcha_code']) && !empty($_SESSION['captcha_code']) && ($_SESSION['captcha_code']="=$_POST['captcha_code']))" { $captchaValidierungOk="true;" } $code ; for ($i="0;" $i < 4; $i++) { $code .="chr(rand(97," 122)); } $_SESSION['captcha_code']="$code;" ?>