极验验证码类
效果图：
类Geetestlib.class.php<?php <br />
/**<br>
* 极验验证类<br>
* @category ORG<br>
* @package ORG<br>
* @subpackage Net<br>
* @author liujing <liujin0506><br>
*/<br>
class Geetestlib {<br>
<br>
public function geetest_validate($challenge, $validate, $seccode, $key) { <br>
$apiserver = 'api.geetest.com';<br>
if (strlen($validate) > 0 && $this->check_result_by_private($challenge, $validate, $key)) { <br>
$query = 'seccode='.$seccode;<br>
$servervalidate = $this->http_post($apiserver, '/validate.php', $query); <br>
if (strlen($servervalidate) > 0 && $servervalidate == md5($seccode)) {<br>
return TRUE;<br>
}<br>
}<br>
<br>
return FALSE; <br>
}<br>
<br>
private function check_result_by_private($origin, $validate, $key) {<br>
return $validate == md5($key.'geetest'.$origin) ? TRUE : FALSE;<br>
}<br>
<br>
private function http_post($host, $path, $data, $port = 80) {<br>
// $data = $this->fix_encoding($data);<br>
<br>
$http_request = "POST $path HTTP/1.0\r\n";<br>
$http_request .= "Host: $host\r\n";<br>
$http_request .= "Content-Type: application/x-www-form-urlencoded\r\n";<br>
$http_request .= "Content-Length: " . strlen($data) . "\r\n";<br>
$http_request .= "\r\n";<br>
$http_request .= $data;<br>
<br>
$response = '';<br>
if (($fs = @fsockopen($host, $port, $errno, $errstr, 10)) == false) {<br>
die ('Could not open socket! ' . $errstr);<br>
}<br>
<br>
fwrite($fs, $http_request);<br>
<br>
while (!feof($fs))<br>
$response .= fgets($fs, 1160);<br>
fclose($fs);<br>
<br>
$response = explode("\r\n\r\n", $response, 2);<br>
return $response[1];<br>
}<br>
<br>
private function fix_encoding($str) { <br>
$curr_encoding = mb_detect_encoding($str) ; <br>
<br>
if($curr_encoding == "UTF-8" && mb_check_encoding($str,"UTF-8")) {<br>
return $str; <br>
} else {<br>
return utf8_encode($str); <br>
}<br>
}<br>
}<br>
<br>
?></liujin0506>控制器处理代码：import('ORG.Net.Geetestlib');<br>
$verify = new Geetestlib();<br>
$key = C('verifykey');<br>
$validate_response = $verify->geetest_validate(@$_POST['geetest_challenge'], @$_POST['geetest_validate'], @$_POST['geetest_seccode'],$key);<br>
if(empty($validate_response)) {<br>
$this->error('验证码错误！');<br>
}前端处理代码：<script></script>（这里注意id的绑定）
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