首先：包含文件recaptchalib.php
<?php
/*
* This is a PHP library that handles calling reCAPTCHA.
* - Documentation and latest version
* http://recaptcha.net/plugins/php/
* - Get a reCAPTCHA API Key
* http://recaptcha.net/api/getkey
* - Discussion group
* http://groups.google.com/group/recaptcha
*
* Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
* AUTHORS:
* Mike Crawford
* Ben Maurer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* The reCAPTCHA server URL's
*/
$recaptcha_api_server = 'http://api.recaptcha.net';
$recaptcha_api_secure_server = 'https://api-secure.recaptcha.net';
$recaptcha_verify_server = 'api-verify.recaptcha.net';
/**
* Encodes the given data into a query string format
* @param $data - array of string elements to be encoded
* @return string - encoded request
*/
function _recaptcha_qsencode ($data) {
$req = "";
foreach ( $data as $key => $value )
$req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
// Cut the last '&'
$req=substr($req,0,strlen($req)-1);
return $req;
}
/**
* Submits an HTTP POST to a reCAPTCHA server
* @param string $host
* @param string $path
* @param array $data
* @param int port
* @return array response
*/
function _recaptcha_http_post($host, $path, $data, $port = 80) {
$req = _recaptcha_qsencode ($data);
$http_request = "POST $path HTTP/1.0/r/n";
$http_request .= "Host: $host/r/n";
$http_request .= "Content-Type: application/x-www-form-urlencoded;/r/n";
$http_request .= "Content-Length: " . strlen($req) . "/r/n";
$http_request .= "User-Agent: reCAPTCHA/PHP/r/n";
$http_request .= "/r/n";
$http_request .= $req;
$response = '';
if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
die ('Could not open socket');
}
fwrite($fs, $http_request);
while ( !feof($fs) )
$response .= fgets($fs, 1160); // One TCP-IP packet
fclose($fs);
$response = explode("/r/n/r/n", $response, 2);
return $response;
}
/**
* Gets the challenge HTML (javascript and non-javascript version).
* This is called from the browser, and the resulting reCAPTCHA HTML widget
* is embedded within the HTML form it was called from.
* @param string $pubkey A public key for reCAPTCHA
* @param string $error The error given by reCAPTCHA (optional, default is null)
* @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
* @return string - The HTML to be embedded in the user's form.
*/
function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
{
global $recaptcha_api_server, $recaptcha_api_secure_server;
if ($pubkey == null || $pubkey == '') {
die ("To use reCAPTCHA you must get an API key from <a href='http://recaptcha.net/api/getkey'>http://recaptcha.net/api/getkey</a>");
}
if ($use_ssl) {
$server = $recaptcha_api_secure_server;
} else {
$server = $recaptcha_api_server;
}
$errorpart = "";
if ($error) {
$errorpart = "&error=" . $error;
}
return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
<noscript>
<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br>
<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
<input type="hidden" name="recaptcha_response_field" value="manual_challenge">
</noscript>';
}
/**
* 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 $response
* @return ReCaptchaResponse
*/
function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response)
{
if ($privkey == null || $privkey == '') {
die ("To use reCAPTCHA you must get an API key from <a href='http://recaptcha.net/api/getkey'>http://recaptcha.net/api/getkey</a>");
}
if ($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;
}
global $recaptcha_verify_server;
$response = _recaptcha_http_post ($recaptcha_verify_server, "/verify",
array (
'privatekey' => $privkey,
'remoteip' => $remoteip,
'challenge' => $challenge,
'response' => $response
)
);
$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 "http://recaptcha.net/api/getkey?" . _recaptcha_qsencode (array ('domain' => $domain, 'app' => $appname));
}
/* Mailhide related code */
function _recaptcha_aes_encrypt($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;
$val=str_pad($val, (16*(floor(strlen($val) / 16)+(strlen($val) % 16==0?2:1))), chr(16-(strlen($val) % 16)));
return mcrypt_encrypt($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 <a href='http://mailhide.recaptcha.net/apikey'>http://mailhide.recaptcha.net/apikey</a>");
}
$ky = pack('H*', $privkey);
$cryptmail = _recaptcha_aes_encrypt ($email, $ky);
return "http://mailhide.recaptcha.net/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 $arr;
}
/**
* Gets html to display an email address given a public an private key.
* to get a key, go to:
*
* http://mailhide.recaptcha.net/apikey
*/
function recaptcha_mailhide_html($pubkey, $privkey, $email) {
$emailparts = _recaptcha_mailhide_email_parts ($email);
$url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
"' onclick=/"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;/" title=/"Reveal this e-mail address/">...</a>@" . htmlentities ($emailparts [1]);
}
?>
再次 index.php
<?php
require_once('recaptchalib.php');
//$publickey = "6LcZogEAAAAAAHcgXHAcgHiqXPN_bJQuAwPhYZVu";
//$privatekey = "6LcZogEAAAAAAPP1q-awa6p7mUjVUs0fma4XILxd";
$publickey = "6LdBpAUAAAAAALQIhBmR9veAY_VuTz8qCQpi7zlW";
$privatekey = "6LdBpAUAAAAAAKfwNwzeEs0Up51T3EQZkg-WxQ1_";
//already setup keys for www.tregaskiss.com
//$publickey = "6LeuEAAAAAAAAEIamLRF5_Bcvzw-HotniAaazcIA";
//$privatekey = "6LeuEAAAAAAAAHRc_DaqO0LPKqY3NPnfCN4cvAoL";
# the response from reCAPTCHA
$resp = null;
# the error code from reCAPTCHA, if any
$error = null;
$request_success = false;
$fail = false;
//contactUs email submittal
if (isset($_POST['sndfrm'])){
if ($_POST["recaptcha_response_field"]) {
$resp = recaptcha_check_answer ($privatekey,$_SERVER["REMOTE_ADDR"],$_POST["recaptcha_challenge_field"],$_POST["recaptcha_response_field"]);
if ($resp->is_valid) {
echo "haha";
#########################################################
$request_success = true;
}else{
# set the error code so that we can display it
$error = $resp->error;
$fail = true;
var_dump($resp);
echo $error."test" ;
}
}
}
//$displayContent = getPageData($page,$section, 64, 5);
//include_once($AppSettings['path_conf'].'/header.inc');
//if($displayContent) {
//if(ContentPage::isValidObject($page)) { displayPageContent($page,$section,$fail); }
//else { echo "<div id=/"bodyBlock/"><div id=/"leftCol/">No Content Found!</div></div>"; }
//}
//include_once($AppSettings['path_conf'].'/footer.inc');
displayPageContent($page,$section,$fail);
function displayPageContent(&$currentPage,&$section,$fail) {
global $_resourceManager, $publickey, $privatekey, $resp, $error, $request_success;
?><!--
<div id="leftCol"><?/*getGreyMenu($currentPage->getSectionId(), false, 174);*/?></div>
<div id="rightCol">
<div id="col1">-->
<script type="text/javascript" src="/js/jquery.js"></script>
<script language="JavaScript" type="text/javascript">
function trim(s) { return ltrim(rtrim(s)); }
function ltrim(s) { return s.replace(/^/s+/g, ""); }
function rtrim(s) { return s.replace(//s+$/g, ""); }
function isValidEmail(str) { return (str.indexOf(".") > 2) && (str.indexOf("@") > 0); }
function validateForm(frmObj) {
var frm = frmObj;
var userName = trim(frm.userName.value);
if(trim(frm.userName.value)=="" || trim(frm.password.value)=="" || trim(frm.passwordCheck.value )=="" || trim(frm.firstName.value)=="" || trim(frm.lastName.value)=="" || trim(frm.email.value)==""){
alert("Please enter information for all of the fields marked with an '*' before continuing please.");
} else if(trim(frm.password.value) != trim(frm.passwordCheck.value)){
alert('The two passwords do not match.');
}else if (!isValidEmail(frm.email.value)){
alert('Please enter a valid email address for the send to field.');
}else if (trim(frm.recaptcha_response_field.value)=="") {
alert('Please enter the reCaptcha words.');
} else {
frm.sndfrm.value = "true";
frm.submit();
}
}
</script>
<div class="topImage"><img src="img/backgrounds/or_en_7.jpeg"></div>
<form action="#" method="post" name="contactUs">
<input type="hidden" name="sndfrm" value="false" />
<table cellspacing="0" cellpadding="2" width="600px" border="0">
<tbody>
<?php if($request_success){ ?>
<tr><td colspan="2" height="80px;" align="center" valign="middle"><div style="font-size:20px;">Your request has been successfully sent.</div></td></tr>
<?php } ?>
<tr>
<td width="30%">
<div align="left">Username:* </div>
</td>
<td><input maxlength="40" size="40" name="userName" <?php if($fail){ ?> value="<?php echo($_POST['userName']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Password:* </div>
</td>
<td><input maxlength="40" size="40" name="password" type="password" <?php if($fail){ ?> value="<?php echo($_POST['password']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Retype Password:* </div>
</td>
<td><input maxlength="40" size="40" name="passwordCheck" type="password" <?php if($fail){ ?> value="<?php echo($_POST['passwordCheck']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">First Name:* </div>
</td>
<td><input maxlength="40" size="40" name="firstName" <?php if($fail){ ?> value="<?php echo($_POST['firstName']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Last Name:* </div>
</td>
<td><input maxlength="40" size="40" name="lastName" <?php if($fail){ ?> value="<?php echo($_POST['lastName']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Address:* </div>
</td>
<td><input maxlength="40" size="40" name="address" <?php if($fail){ ?> value="<?php echo($_POST['address']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Telephone: </div>
</td>
<td><input maxlength="40" size="40" name="telephone" <?php if($fail){ ?> value="<?php echo($_POST['telephone']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Email:* </div>
</td>
<td><input maxlength="40" size="40" name="email" <?php if($fail){ ?> value="<?php echo($_POST['email']);?>"<?php } ?> /></td>
</tr>
<tr>
<td width="30%">
<div align="left">Company Name: </div>
</td>
<td><input maxlength="40" size="40" name="company" <?php if($fail){ ?> value="<?php echo($_POST['company']);?>"<?php } ?> /></td>
</tr>
<tr>
<td valign="top">
<div align="left">Your question / comment / suggestion: </div>
</td>
<td><textarea rows="3" cols="40" name="comments"><?php if($fail){ ?> <?php echo($_POST['comments']);?> <?php } ?></textarea></td>
</tr>
<tr>
<td>
<div align="right"> </div>
</td>
<td> </td>
</tr>
</tbody>
</table>
<br />
<br />
<script>var RecaptchaOptions = {theme : 'blackglass'};</script>
<?php echo recaptcha_get_html($publickey, $error); ?>
<?php
var_dump($error);
?>
<a name="recaptcha"> </a>
<br />
<br />
<div align="center"><input class="formButton" onclick="validateForm(this.form)" type="button" name="sndEmail" value="Submit Form" /> <input class="formButton" type="reset" name="Reset" value="Clear Form" />
</div>
</form>
<!--
</div>
</div>
-->
<?php
}
?>