我最近有一个为我设计的网站，但我的开发人员使用了一个非常糟糕的通用验证码，有一半时间失败。 我正在尝试使用验证码替换它，但是遇到了麻烦。 我无法弄清楚哪个 *.php 用于"处理"，哪个用于"表单"。
我不想发布整个代码，所以这里是：
这是"表单"页面，因为它嵌入了表单字段等：http://dl.dropbox.com/u/45666699/formcode.txt
有人可以看看这段代码，告诉我应该把 recaptcha 的私人代码放在哪里吗？ 另外，如何禁用已安装的"random_number"验证码？ 谢谢！
您现有验证码的代码在线295, 296 and 297
require_once('recaptchalib.php');
$publickey = "6LfIUdISAAAAAKguxgdPCjZ6-OkVeu5tmcBaa7ug"; // you got this from the signup page
echo recaptcha_get_html($publickey);
好吧，
当您尝试验证是否输入了正确的验证码时（即在您处理表单提交时），您将需要私钥
通过查看您的代码应该在line 4后立即开始
使用我不久前做的一个项目，你会有这样的东西......
$recaptcha_error = NULL;
//set it to NULL initially
if(isset($_POST["btnsend"])){
include_once(INCLUDES_FOLDER."recaptcha-php-1.11/recaptchalib.php");
$resp = recaptcha_check_answer(RECAPTCHA_PRIVATE_KEY,$_SERVER["REMOTE_ADDR"],$_POST["recaptcha_challenge_field"],$_POST["recaptcha_response_field"]);
if($resp->is_valid){
//captch was gotten correctly
//continue with your normal code processing here
} else {
//wrong input -- captch was invalid -- give the person the error response
//mine is as below -- my usual way :)
$response = array(array("Something seems to be wrong with the captcha!","Please check that you entered it correctly or check the returned error message"),false,"w");
$recaptcha_error = $resp->error;
//make sure to do the above so u can use it when generating the captcha display
}
}
//You got the recaptch error (or left it as NULL above so you could do this)
//when generating your captch display as done on your lines 295, 296, 297
include_once(INCLUDES_FOLDER."recaptcha-php-1.11/recaptchalib.php");
echo recaptcha_get_html(RECAPTCHA_PUBLIC_KEY,$recaptcha_error);
希望这对（即使有点）有所帮助:)
干杯