在PHP表单上使用reCAPTCHA

Question

I would really apreciate if you could help me.

I have a form that ends with this button:

<button type="submit" value="Create" name="new">Create</button>

And then PHP process it using:

if(isset($_POST['new']) && $_POST['new'] == "Create")

So I'm trying to add reCAPTCHA to it and I have this piece of code:

<?php
require_once('recaptchalib.php'); // reCAPTCHA Library
$pubkey = ""; // Public API Key
$privkey = ""; // Private API Key

if ($_POST['doVerify']) {
  $verify = recaptcha_check_answer($privkey, $_SERVER['REMOTE_ADDR'], $_POST['recaptcha_challenge_field'], $_POST['recaptcha_response_field']);
  if ($verify->is_valid) {
    # Enter Success Code
     //process form
  }
  else {
    # Enter Failure Code
    echo "You did not enter the correct words.  Please try again.";
  }
}
?>

But I have no idea how to link them.

Thanks in advice!

Answer 1

Just do:

<?php
require_once('recaptchalib.php'); // reCAPTCHA Library
$pubkey = ""; // Public API Key
$privkey = ""; // Private API Key

if(isset($_POST['new']) && $_POST['new'] == "Create") {
  if ($_POST['doVerify']) {
    $verify = recaptcha_check_answer($privkey, $_SERVER['REMOTE_ADDR'], $_POST['recaptcha_challenge_field'], $_POST['recaptcha_response_field']);
    if ($verify->is_valid) {
      # Enter Success Code
      //process form
    }
    else {
      # Enter Failure Code
      echo "You did not enter the correct words.  Please try again.";
    }
  }
}
?>

Not much point validating the CAPTCHA if the rest of the form doesn't pass validation, right?