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I'm trying to set up a CAPTCHA on my site. The e-mail form was
previously hijacked by a "bot" that was filling my inbox with spam.

I've got it set up at http://www.timyoungonline.com/email.php . The
problem is, even if I enter the CAPTCHA words correctly, it tells me
that I've entered them incorrectly. Somehow it isn't detecting correct
answers.

The coding is in PHP. I'm no programmer; I got the e-mail form PHP
from someone else a few years ago. It was meant to hide the "mailto"
address from spammers. In the spam arms race, unfortunately, that's
not a foolproof approach anymore...

At any rate, this is what I've got so far (editing out my personal
code numbers):

<?php
          require_once('recaptchalib.php');
          $publickey = "..."; // you got this from the signup page
          echo recaptcha_get_html($publickey);
         ?>

      </p>
      <FORM METHOD=POST>
        <INPUT TYPE=HIDDEN NAME="ACTION" VALUE="send-mail">
        Your E-mail:
        <INPUT TYPE=TEXT NAME="EMAIL">
        <br>
        Message Subject:
        <INPUT TYPE=TEXT NAME="SUBJECT">
        <p> Message:<br>
          <TEXTAREA NAME="MESSAGE" ROWS=5 COLS=50></TEXTAREA>
        <p>
          <INPUT name="SUBMIT" TYPE=SUBMIT>
          *
          <INPUT name="RESET" TYPE=RESET>
      </FORM>


<?php
  // Your E-mail Address
  $MYEMAIL = "fictionaladdress@domain.com";

  if ($ACTION == "send-mail")
  {
    require_once('recaptchalib.php');
    $privatekey = "...";
    $resp = recaptcha_check_answer ($privatekey,
                                $_SERVER["REMOTE_ADDR"],
                                $_POST["recaptcha_challenge_field"],
                                $_POST["recaptcha_response_field"]);

    if (!$resp->is_valid)
    {
      die ("The reCAPTCHA wasn't entered correctly. Go back and try it
again." .
      "(reCAPTCHA said: " . $resp->error . ")");
    }
    else
    {
      mail($MYEMAIL,$SUBJECT,$MESSAGE,"From: $EMAIL");
      echo "<h2>Thanks for your message!</h2>\n";
    }
  }
?>

Anyone familiar with PHP recognize any problems here?

Last edited by tokyoite (2007-12-26 9:23 pm)