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I'm trying to use Google reCaptcha on my website and after following several tutorials, I'm using as follow on my HTML page:
<section class="row" id="Contact">
<div class="col-full">
<form method="post" action="contact.php">
<input name="sender" placeholder="Name" size="30"><br><br>
<input name="senderEmail" placeholder="Email" size="30"><br><br>
<textarea rows="10" cols="30" name="message" placeholder="Message"></textarea><br><br>
<div class="g-recaptcha" data-sitekey="6LdFOQcTAAAAABKsku3bD6Mp3HuGYNDRN1tLlSkw"></div><br>
<input type="submit" name="submit">
</form>
</div>
</section>
With the following within the <head> tag:
<script src='https://www.google.com/recaptcha/api.js'></script>
The form loads the following PHP script as shown on Google's tutorial:
<?php
require_once('recaptchalib.php');
echo "<pre> _POST: =========\n";
print_r($_POST);
echo "\n=========\n</pre>";
$privatekey = "privatekey";
$resp = recaptcha_check_answer ($privatekey,
$_SERVER["REMOTE_ADDR"],
$_POST["recaptcha_challenge_field"],
$_POST["recaptcha_response_field"]);
if (!$resp->is_valid)
{
die ("The reCAPTCHA wasn't entered correctly. Go back and try it again." .
"(reCAPTCHA said: " . $resp->error . ")");
}
?>
The problem is I always get the error incorrect-captcha-sol and can't understand why. the output I get from the PHP script is:
_POST: =========
Array
(
[g-recaptcha-response] => 03AHJ_VusLbTZVbhMBH2-cyOdbM81IoG7ShDtTmyVa8e34PbghyKaRYnrb4bbeuPoJXFa-2sD5B-UIOWq_zClya-VOtq8iLHXBkAR0PrElQYiQjKTm2POkjci43-yEaenh1tu_M4vKsjJGswKFlVs6IdlWhdVaMdznLBeutgHjiHRBy7fzAi0It0x5IadwMxAqVpmG7F1gRvUcQmakij4ObTqPUK4lPdc84HkkKmY62uJ45d8DwKSeR2ifRg6wL9JFxpcZkjSp4oIlltin2uCMiBDU58QQQLLKPJuSKcmm-N5p7OEt7E6gc4UZyTLpKrJ-9mMUusvLpixwFHop0e5155vEZssxzu6Zizo-LyB1mX3XOrQ8LEceydssgLvl9gJBC4f9zDBKPQdLmjfxVKdPCXLtUZVNbMDYe7cNL7gsgwJC-hLbZYTh6UV1nUdKnFnkHAACjI7M28hpKWdiyIwcJ5UAzTMPfIllMw
)
=========
Why don't I have recaptcha_challenge_field or recaptcha_response_field fields on my POST and how can I solve it?
754
The code I used for my recaptcha is as follows:
This goes in the header:
<script src='https://www.google.com/recaptcha/api.js'></script>
This goes where you want the actual recaptcha to be:
<div class="g-recaptcha" data-sitekey="PUBLIC_KEY_HERE"></div>
You can add this to the div to change the theme: data-theme="theme"
And this is the PHP script:
if(isset($_POST['g-recaptcha-response']))
$captcha=$_POST['g-recaptcha-response'];
if(!$captcha){
//Captcha hasn't been checked
}
$response=json_decode(file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=SECRET_KEY_HERE&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']), true);
if($response['success'] == false){
//Captcha incorrect
}
else {
//Success code here
}
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