mod_recaptcha_v2.php

<?php
/*
mod_recaptcha_v2.php
author/LINE: ben2613

Try to use the Google ReCaptcha v2 referring to the mod_recaptcha.php
the recaptchalib.php below can be found at
https://github.com/google/ReCAPTCHA/tree/master/php

You can register at
https://www.google.com/recaptcha/admin
*/
require_once('recaptchalib.php'); // reCAPTCHA PHP Library

class mod_recaptcha_v2{
    var $KEY_PUBLIC, $KEY_PRIVATE;
    var $reCaptcha;

    function mod_recaptcha_v2(){
        $this->KEY_PUBLIC = ''; // Public Key of this site
        $this->KEY_PRIVATE = ''; // Private Key of this site
        $this->reCaptcha = new ReCaptcha($this->KEY_PRIVATE);
    }

    function getModuleName(){
        return 'mod_recaptcha_v2 : reCAPTCHA v2';
    }

    function getModuleVersionInfo(){
        return '0.Alpha.0 (v150126)';
    }

    function autoHookHead(string &$head, int $isReply){
        $head.="<script src='https://www.google.com/recaptcha/api.js?hl=zh-TW'></script>";
    }

    /* 在頁面附加 reCAPTCHA 功能 */
    function autoHookPostForm(&$txt){
        $txt .= '<tr><th class="Form_bg">驗證</th><td>'.'<div class="g-recaptcha" data-sitekey="'.$this->KEY_PUBLIC.'"></div>'.'</td></tr>\n';
    }

    /* 在接收到送出要求後馬上檢查是否正確 */
    function autoHookRegistBegin(&$name, &$email, &$sub, &$com, $upfileInfo, $accessInfo){
        $resp = $this->reCaptcha->verifyResponse($_SERVER['REMOTE_ADDR'], $_POST['g-recaptcha-response']);
        if($resp == null || !$resp->success){ error('reCAPTCHA failed！You are not acting like a human!'); } // 檢查
    }
}
?>