Cool Captcha

stáhnout(viz. naspacir.eu)

<img src="/wp-content/plugins-php/cool-captcha/captcha.php" id="captcha" /><br/>
<a href="#tabulka" onclick="document.getElementById('captcha').src='/wp-content/plugins-php/cool-captcha/captcha.php?'+Math.random(); document.getElementById('captcha-form').focus();" id="change-image">Nejde text pest? Nati obr￡zek znovu.</a><br/><br/>
<input type="text" name="captcha" id="captcha-form" autocomplete="off" /><br/>

ověření

//echo "".$_REQUEST['captcha']."=".$_SESSION['captcha']."";
if (!empty($_REQUEST['captcha'])) {
    if (empty($_SESSION['captcha']) || trim(strtolower($_REQUEST['captcha'])) != $_SESSION['captcha']) {
         $captchaStav=0;
    } else {
         $captchaStav=1;

    }
   $request_captcha = htmlspecialchars($_REQUEST['captcha']);
}
    unset($_SESSION['captcha']);
    $_SESSION['captcha']="";