Here is a tested version of your captcha file. put your pub and priv keys in the lib file.
[php]
'; } /** * A ReCaptchaResponse is returned from recaptcha_check_answer() */ class ReCaptchaResponse { var $is_valid; var $error; } /** * Calls an HTTP POST function to verify if the user's guess was correct * @param string $privkey * @param string $remoteip * @param string $challenge * @param string $response * @param array $extra_params an array of extra variables to post to the server * @return ReCaptchaResponse */ function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array()) { if ($privkey == null || $privkey == '') { die ("To use reCAPTCHA you must get an API key from https://www.google.com/recaptcha/admin/create"); } if ($remoteip == null || $remoteip == '') { die ("For security reasons, you must pass the remote ip to reCAPTCHA"); } //discard spam submissions if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) { $recaptcha_response = new ReCaptchaResponse(); $recaptcha_response->is_valid = false; $recaptcha_response->error = 'incorrect-captcha-sol'; return $recaptcha_response; } $response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify", array ( 'privatekey' => $privkey, 'remoteip' => $remoteip, 'challenge' => $challenge, 'response' => $response ) + $extra_params ); $answers = explode ("\n", $response [1]); $recaptcha_response = new ReCaptchaResponse(); if (trim ($answers [0]) == 'true') { $recaptcha_response->is_valid = true; } else { $recaptcha_response->is_valid = false; $recaptcha_response->error = $answers [1]; } return $recaptcha_response; } /** * gets a URL where the user can sign up for reCAPTCHA. If your application * has a configuration page where you enter a key, you should provide a link * using this function. * @param string $domain The domain where the page is hosted * @param string $appname The name of your application */ function recaptcha_get_signup_url ($domain = null, $appname = null) { return "https://www.google.com/recaptcha/admin/create?" . _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname)); } function _recaptcha_aes_pad($val) { $block_size = 16; $numpad = $block_size - (strlen ($val) % $block_size); return str_pad($val, strlen ($val) + $numpad, chr($numpad)); } /* Mailhide related code */ function _recaptcha_aes_encrypt($val,$ky) { if (! function_exists ("mcrypt_encrypt")) { die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed."); } $mode=MCRYPT_MODE_CBC; $enc=MCRYPT_RIJNDAEL_128; $val=_recaptcha_aes_pad($val); return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"); } function _recaptcha_mailhide_urlbase64 ($x) { return strtr(base64_encode ($x), '+/', '-_'); } /* gets the reCAPTCHA Mailhide url for a given email, public key and private key */ function recaptcha_mailhide_url($pubkey, $privkey, $email) { if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) { die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " . "you can do so at http://www.google.com/recaptcha/mailhide/apikey"); } $ky = pack('H*', $privkey); $cryptmail = _recaptcha_aes_encrypt ($email, $ky); return "http://www.google.com/recaptcha/mailhide/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail); } /** * gets the parts of the email to expose to the user. * eg, given johndoe@example,com return ["john", "example.com"]. * the email is then displayed as [email protected] */ function _recaptcha_mailhide_email_parts ($email) { $arr = preg_split("/@/", $email ); if (strlen ($arr[0]) <= 4) { $arr[0] = substr ($arr[0], 0, 1); } else if (strlen ($arr[0]) <= 6) { $arr[0] = substr ($arr[0], 0, 3); } else { $arr[0] = substr ($arr[0], 0, 4); } return $arr; } /** * Gets html to display an email address given a public an private key. * to get a key, go to: * * http://www.google.com/recaptcha/mailhide/apikey */ function recaptcha_mailhide_html($pubkey, $privkey, $email) { $emailparts = _recaptcha_mailhide_email_parts ($email); $url = recaptcha_mailhide_url ($pubkey, $privkey, $email); return htmlentities($emailparts[0]) . "...@" . htmlentities ($emailparts [1]); } ?>
[/php]
And the html form page
[php]
<?php
require_once('site_inc/system_inc/recaptchalib_func2.php');
function spamcheck($field)
{
//filter_var() sanitizes the e-mail
//address using FILTER_SANITIZE_EMAIL
$field=filter_var($field, FILTER_SANITIZE_EMAIL);
//filter_var() validates the e-mail
//address using FILTER_VALIDATE_EMAIL
if(filter_var($field, FILTER_VALIDATE_EMAIL))
{
return TRUE;
}
else
{
return FALSE;
}
}
if (isset($_REQUEST['email']))
{//if "email" is filled out, proceed
$resp = recaptcha_check_answer ($privatekey,
$_SERVER["REMOTE_ADDR"],
$_POST["recaptcha_challenge_field"],
$_POST["recaptcha_response_field"]);
//check if the email address is invalid
$mailcheck = spamcheck($_REQUEST['email']);
if ($mailcheck==FALSE)
{
echo "Invalid Input - Please Try Send The Form Again";
}
elseif($resp->is_valid === FALSE)
{
echo "The Captcha did not pass validation. Please try again.";
}
else
{//send email
$email = $_REQUEST['email'] ;
$subject = $_REQUEST['subject'] ;
$message = $_REQUEST['message'] ;
/*mail("[email protected]",
"Subject: $subject",
$message, "From: $email" );
*/ echo "Thank you for contacting us. We will get back to you shortly";
}
}
else {//if "email" is not filled out, display the form
$html = "Email:
"; $html .= "Subject:
Message:
"; $html .= "
"; $html .= recaptcha_get_html($publickey); $html .= ""; echo $html; } ?>
[/php]
Also please start using the php tags in the forum to post code, it makes it much easier to read.
"; $html .= "Subject:
Message:
"; $html .= "
"; $html .= recaptcha_get_html($publickey); $html .= ""; echo $html; } ?>