php空间不支持socket但支持curl时recaptcha的用法

yipeiwu_com5年前PHP代码库
1.修改recaptchalib.php中的两个方法
复制代码 代码如下:

function _recaptcha_http_post($host, $path, $data, $port = 80) {
$req = _recaptcha_qsencode ($data);
$response = '';
$url = $host.$path;
$post_data = $req;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// 我们在POST数据哦!
curl_setopt($ch, CURLOPT_POST, 1);
// 把post的变量加上
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
$output = curl_exec($ch);
curl_close($ch);
//echo $output;
$response = $output;
return $response;
}
function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
{
if ($privkey == null || $privkey == '') {
die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
}
if ($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;
}
$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();
$pos = strpos($response, 'true');
if ($pos === false) {
$recaptcha_response->is_valid = false;
$recaptcha_response->error = $response;
} else {
$recaptcha_response->is_valid = true;
}
return $recaptcha_response;
}

2.demo.php
复制代码 代码如下:

<html>
<body>
<form action="" method="post">
<?php
require_once('recaptchalib.php');
// Get a key from https://www.google.com/recaptcha/admin/create
$publickey = "你的公共key ---自己去http://www.google.com/recaptcha申请";
$privatekey = "你的私有key ---自己去http://www.google.com/recaptcha申请";
# the response from reCAPTCHA
$resp = null;
# the error code from reCAPTCHA, if any
$error = null;
# was there a reCAPTCHA response?
if ($_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 "You got it!";
} else {
# set the error code so that we can display it
$error = $resp->error;
echo $error;
//echo $_POST["recaptcha_challenge_field"];
//echo $_POST["recaptcha_response_field"];
}
}
echo recaptcha_get_html($publickey, $error);
?>
<br/>
<input type="submit" value="submit" />
</form>
</body>
</html>

相关文章

PHP高效获取远程图片尺寸和大小的实现方法

 PHP高效获取远程图片尺寸和大小的实现方法 在这里分享一下自己的心得,希望和大家一起分享技术,如果有什么不足,还请大家指正。写出这篇目的,就是希望大家一起成长,我也相信技术之...

PHP中STDCLASS用法实例分析

本文实例讲述了PHP中STDCLASS用法。分享给大家供大家参考,具体如下: PHP中STDCLASS在我们开发应用中使用到的不多,但是PHP中STDCLASS作用是非常的大的,下面我们...

php禁止直接从浏览器输入地址访问.php文件的方法

本文实例讲述了php禁止直接从浏览器输入地址访问.php文件的方法。分享给大家供大家参考。具体实现方法如下: 一般来说对于有些重要的文件我们并不希望用户可以直接输入地址进行访问,对此我们...

PHP中数组转换为SimpleXML教程

SimpleXML扩展函数提供了将XML转换为对象的工具集。这些对象处理普通的属性选择器和数组迭代器。 示例1: <?php // 将php数组转换为xml文档的代码...

PHP5 面向对象(学习记录)

1,继承extends 只能单继承 public protected private 属性 __construct() __destruct() __get()读取私有成员 __set(...