WARNING! And over again. This tutorial require core edits inside class_captcha.php file.
Well. noticed info above?
So let's start.
1. Make template edit.
Find member_register_regimage_recaptcha (let me help you. Is located at Member Templates).
Find:
Code:
<script type="text/javascript" src="{$server}/challenge?k={$public_key}"></script>And replace it with:
Code:
<script src='https://www.google.com/recaptcha/api.js'></script>
<div class="g-recaptcha" data-sitekey="{$public_key}"></div>2. Make core file edit.
I think best solution would be telling which line of code were replaced. so:
At line 283 (as of latest commited file) find:
PHP Code:
283. $challenge = $mybb->input['recaptcha_challenge_field'];
284. $response = $mybb->input['recaptcha_response_field'];
[[285 --> 327]]
328. $answer = explode("\n", $response[1]);
329. if(trim($answer[0]) != 'true')
330. {
331. // We got it wrong! Oh no...
332. $this->set_error($lang->invalid_captcha_verify);
333. }
334. }
335. }
336. }
And replace everything with:
PHP Code:
$response = $mybb->input['g-recaptcha-response'];
if(!$response || strlen($response) == 0) {
$this->set_error($lang->invalid_captcha);
} else {
$google_url = "https://www.google.com/recaptcha/api/siteverify";
$url = $google_url."?secret=".$mybb->settings['captchaprivatekey']."&response=".$response."&remoteip=".$session->ipaddress;
$nocaptchareply = @file_get_contents($url);
$res = json_decode($nocaptchareply, true);
if(!$res['success']) {
$this->set_error($lang->invalid_captcha_verify);
}
}
3. Language edits (OBSOLETE):
go to your member.lang.php and find:
PHP Code:
$l['verification_note'] = "Please enter the text contained within the image into the text box below it. This process is used to prevent automated processes.";
[....]
$l['error_regimageinvalid'] = "The image verification code that you entered was incorrect. Please enter the code exactly how it appears in the image.";
$l['error_regimagerequired'] = "Please fill out the image verification code to continue the login process. Please enter the code exactly how it appears in the image.";
And edit them as you'd like to be appared. For example:
PHP Code:
$l['verification_note'] = "Please checkbox a square. This process is used to prevent automated processes.";
[....]
$l['error_regimageinvalid'] = "Please click the checkbox.";
$l['error_regimagerequired'] = "Something went wrong. Please retry again.";
And that's all
More info about noCaptcha can be found [here] and [here]
Edit: This tutorial will be deprecated (as of MyBB Developers included noCaptcha in next release).