Could someone please point me to a working comments php with captcha bundled script?

I have tried 6 or 7 different captchas and none of them work.

Comments? General comments? Is this for a particular software, and, if so, which?

As for CAPTCHA, ReCAPTCHA is a good one to look at.

I just made a 'cheap captcha' script that asks for the sum of two random numbers...you could use it if you like.

Put this in your form:

PHP Code:

    <?php
        $randomNumber1 = rand(1, 10);
        $randomNumber2 = rand(1, 10);
        $sum = $randomNumber1 + $randomNumber2;
        $_SESSION['sum'] = $sum;    
    ?>
        <p class="label">We just need to check to make sure you're not a Dalek. Please add the numbers below and enter in the result.</p>
        <label for="captcha" class="label"><?php echo $randomNumber1.' + '.$randomNumber2.' = '; ?></label>
            <input type="text" class="input" id="captcha" name="captcha" />

And this in your validation:

PHP Code:

        if (empty($_POST['captcha'])){    
                $errors[] = "You must enter a number to answer the math question below.";    
        } else if ($_POST['captcha'] != $_SESSION['sum']){
            $errors[] = "The number you entered wasn't the right answer for the math question.";    
        } 


I use $errors as an array that will prevent the script from executing if it has a value.

Just an idea, VM, but integrating http://pear.php.net/package/Numbers_Words might be fun with numbers large than 10.

I use one called securimage from http://www.phpcaptcha.org/. Works great!