Google reCAPTCHA - keep getting `incorrect-captcha-sol`

html, php, recaptcha

Solution

I have solved this, it is one of the most unusual things I have come across, my syntax was previously:

<table>
  <form>
    <tr><td></td></tr>
  </form>
</table>

I changed it to this:

<form>
  <table>
    <tr><td></td></tr>
  </table>
</form>

Because of this switch, suddenly the `recaptcha_response_field` and `recaptcha_challenge_field` are posting values back to the form.

I cannot think why this because all MY form variables got posted back before the switch.

Thanks all for the pointers.

Problem

I am trying to add a reCAPTCHA to my site, but keep getting `incorrect-captcha-sol` error when I submit the answer. Can anyone tell me if I am correct in doing the following? I have a generic index.php, which includes contact.php. In contact.php I have inserted the following code: ``` require_once('recaptchalib.php'); $publickey = "XXXX"; $privatekey = "XXXX"; //the response from reCAPTCHA $resp = null; //the error code from reCAPTCHA, if any $error = null; if ($_POST['submit']) { $message = $_POST['message_txt']; $name = $_POST['name_txt']; $email = $_POST['email_txt']; $emailBody = $message; $to = 'xx'; $from = $name.' <'.$email.'>'; $subject = 'XX Website Enquiry'; $headers = 'From: '.$from; $resp = recaptcha_check_answer($privatekey, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]); if ($resp->is_valid) { echo 'captcha correct'; if (mail($to,$subject,$emailBody,$headers)) { //echo 'mail sent'; $confirmation = 'sent'; } else { //echo 'mail not sent'; $confirmation = 'error'; } } else { # set the error code so that we can display it. You could also use # die ("reCAPTCHA failed"), but using the error message is # more user friendly $error = $resp->error; echo $error; } } ``` In my html I inserted the CAPTCHA like this: ``` <form name="contactForm" method="post" action="index.php?id=contact&action=submit#contact"> <tr><td>Name</td><td><div align="right"> <input type="text" name="name_txt" class="input"> </div></td></tr> <tr><td>Email</td><td><div align="right"> <input type="text" name="email_txt" class="input"> </div></td></tr> <tr><td height="10"></td></tr> <tr><td colspan="2">Message</td></tr> <tr><td colspan="2"><textarea name="message_txt" class="textarea" style="width:200px; height:100px"></textarea></td></tr> <tr><td colspan="2"><?php echo recaptcha_get_html($publickey, $error); ?></td></tr> <tr><td colspan="2" style="padding-top:10px;"><input type="image" src="images/header_06.gif" name="submit" value="submit"></td></tr> </form> ``` I cannot see that I am doing anything wrong, but would appreciate any help.

Original source