我正在尝试使用 AJAX 将 reCAPTCHA 添加到我的 PHP 联系表单中。我希望使用 reCAPTCHA 显示用户并让用户输入它。如果它不正确,它应该在不离开页面的情况下显示。只有当 CAPTCHA 正确时,它才应该去contacts-go.php
运行代码来发送电子邮件。我试图从这个例子中做到这一点。
这是我的contact.php页面上的内容:
<?php
session_start();
?>
<html>
<head>
<script type="text/javascript" src="/js/jquery-1.4.2.min.js"></script>
<SCRIPT type="text/javascript">
function validateCaptcha()
{
challengeField = $("input#recaptcha_challenge_field").val();
responseField = $("input#recaptcha_response_field").val();
//alert(challengeField);
//alert(responseField);
//return false;
var html = $.ajax({
type: "POST",
url: "ajax.recaptcha.php",
data: "recaptcha_challenge_field=" + challengeField + "&recaptcha_response_field=" + responseField,
async: false
}).responseText;
if(html == "success")
{
$("#captchaStatus").html(" ");
// Uncomment the following line in your application
return true;
}
else
{
$("#captchaStatus").html("Your captcha is incorrect. Please try again");
Recaptcha.reload();
return false;
}
}
</SCRIPT>
<script type="text/javascript">
</script>
</head>
<body>
<?php
require_once("ajax.recaptcha.php");
?>
<div id="login">
<form method="post" onSubmit="return validateCaptcha()" action="contacts-go.php">
<label>Message</label>
<br />
<textarea type="text" id="name" name="message" size="20"></textarea>
<p><?php echo recaptcha_get_html($publickey);?></p>
<p style="color: red;" id="captchaStatus"> </p>
<input type=submit name="submit" value="Submit">
</form>
</div>
</body>
</html>
这是ajax.recaptcha.php文件
<?php
//A. Load the Recaptcha Libary
require_once("recaptchalib.php");
require_once("recaptha-keys.php"); // my reCAPTCHA Keys
$resp = recaptcha_check_answer ($privatekey,
$_SERVER["REMOTE_ADDR"],
$_POST["recaptcha_challenge_field"],
$_POST["recaptcha_response_field"]);
if ($resp->is_valid) {
?>success<?
$_SESSION['captcha'] = 1;
}
else
{
die ("The reCAPTCHA wasn't entered correctly. Go back and try it again." .
"(reCAPTCHA said: " . $resp->error . ")");
}
?>
我得到的只是一个空白页面,其中包含以下内容:
The reCAPTCHA wasn't entered correctly. Go back and try it again.(reCAPTCHA said: incorrect-captcha-sol)