<!DOCTYPE html>
<html>
<head>
</head>
<body>
<?php
## reCAPTCHA V3 key define ##
#client-side
define(‘RECAPTCHA_SITE_KEY’, ‘reCAPTCHA_site_key’); // define here reCAPTCHA_site_key
#server-side
define(‘RECAPTCHA_SECRET_KEY’, ‘reCAPTCHA_secret_key’); // define here reCAPTCHA_secret_key
class Captcha {
public function getCaptcha($SecretKey) {
$data = array(
‘secret’ => RECAPTCHA_SECRET_KEY,
‘response’ => $SecretKey
);
$verify = curl_init();
curl_setopt($verify, CURLOPT_URL, “https://www.google.com/recaptcha/api/siteverify”);
curl_setopt($verify, CURLOPT_POST, true);
curl_setopt($verify, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($verify, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($verify, CURLOPT_RETURNTRANSFER, true);
$response_data = curl_exec($verify);
$response_data = json_decode($response_data);
curl_close($verify);
//echo “<pre>”; print_r($response_data); echo “</pre>”;
return $response_data;
}
}
///////////////////////////// OR /////////////////////////////
/*
class Captcha {
public function getCaptcha($SecretKey) {
$Resposta = file_get_contents(“https://www.google.com/recaptcha/api/siteverify?secret=” . RECAPTCHA_SECRET_KEY . “&response={$SecretKey}”);
$Retorno = json_decode($Resposta);
return $Retorno;
}
}
*/
if ($_SERVER[‘REQUEST_METHOD’] == ‘POST’) {
//echo “<pre>”; print_r($_REQUEST); echo “</pre>”;
$ObjCaptcha = new Captcha();
$Retorno = $ObjCaptcha->getCaptcha($_POST[‘g-recaptcha-response’]);
//echo “<pre>”; print_r($Retorno); echo “</pre>”;
if ($Retorno->success) {
echo ‘<p style=”color: #0a860a;”>CAPTCHA was completed successfully!</p>’;
} else {
$error_codes = ‘error-codes’;
if (isset($Retorno->$error_codes) && in_array(“timeout-or-duplicate”, $Retorno->$error_codes)) {
$captcha_msg = “The verification expired due to timeout, please try again.”;
} else {
$captcha_msg = “Check to make sure your keys match the registered domain and are in the correct locations.<br> You may also want to doublecheck your code for typos or syntax errors.”;
}
echo ‘<p style=”color: #f80808;”>reCAPTCHA error: ‘ . $captcha_msg . ‘</p>’;
}
}
?>
<div class=”contact_form”>
<div class=”” style=”margin-top:0px;margin-bottom:15px;”>
<div class=”” style=”width:50%”>
<form id=”Form1″ name=”Form1″ action=”” method=”POST”>
<label for=”fname”>First Name*</label><br>
<input type=”text” name=”fname” id=”fname” required autofocus><br><br>
<label for=”lname”>Last Name*</label><br>
<input type=”text” name=”lname” id=”lname” required><br><br>
<input type=”hidden” id=”g-recaptcha-response” name=”g-recaptcha-response”><br>
<input type=”submit”>
</form>
</div>
</div>
</div>
<script src=”https://www.google.com/recaptcha/api.js?render=<?php echo RECAPTCHA_SITE_KEY; ?>”></script>
<script>
grecaptcha.ready(function () {
grecaptcha.execute(‘<?php echo RECAPTCHA_SITE_KEY; ?>’, {action: ‘homepage’}).then(function (token) {
document.getElementById(‘g-recaptcha-response’).value = token;
});
});
</script>
</body>
</html>
thank you so much!!! I've been looking for exactly this.
Also If you want to use cURL You should use belove class script:
class Captcha{
public function getCaptcha($SecretKey){
$data = array(
'secret' => RECAPTCHA_SECRET_KEY,
'response' => $SecretKey
);
$verify = curl_init();
curl_setopt($verify, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($verify, CURLOPT_POST, true);
curl_setopt($verify, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($verify, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($verify, CURLOPT_RETURNTRANSFER, true);
$response_data = curl_exec($verify);
$response_data = json_decode($response_data);
curl_close($verify);
/*var_dump($response_data);*/
return $response_data;
}
}
Cant seem to get this to work, recieving error: missing-input-response. What to do?
Replace this javascript:
function grecaptcha_execute(){
grecaptcha.execute('', {action: 'homepage'}).then(function(token) {
document.getElementById('g-recaptcha-response').value=token;
});
}
grecaptcha.ready(function() {
grecaptcha_execute();
});
// On submit get any error recall grecaptcha_execute(); function
Unfortunately still having the same error after changing the javascript to the one above. It seems like response = $SecretKey does nothing. Where is $SecretKey value extracted from?
Could you send me your code or URL?
URL is: https://www.grontulien.no/recaptcha-v3-verify
You can find the code here: https://drive.google.com/file/d/1oJFPooqn4B5Bjk82g5wWG0TGOSQnEcDa/view?usp=sharing
It should be exatcly the same code as in this blog post, except for the keys which I entered.
URL is: https://www.grontulien.no/recaptcha-v3-verify
You can find the code here: https://drive.google.com/file/d/1oJFPooqn4B5Bjk82g5wWG0TGOSQnEcDa/view?usp=sharing
It should be exatcly the same code as in this blog post, except for the keys which I entered.
Please check this: https://prnt.sc/lsbase
🙂
Thank you, working perfectly now 🙂
Worked perfectly! Good job and thanks
In three days of banging my head up against recaptcha v3, this is the ONLY example I have found that is complete, make sense, AND works! Thank you!
Thank you so much for reading my blog…!!!
Please keep reading my blog…
Wow my friend..It is working fine. Thank you very much for saving my extra R&D time…..:)
How do i get the latest values of fname and lname in PHP? It would be nice if I get them in the part which says "CAPTCHA was completed successfully!" so I can mail those or put in the database.
Hello Mich.
Please use and try this code for insert latest fname and lname in databse.
## reCAPTCHA V3 key define ##
#client-side
define('RECAPTCHA_SITE_KEY', 'reCAPTCHA_site_key'); // define here reCAPTCHA_site_key
#server-side
define('RECAPTCHA_SECRET_KEY', 'reCAPTCHA_secret_key'); // define here reCAPTCHA_secret_key
class Captcha {
public function getCaptcha($SecretKey) {
$data = array(
'secret' => RECAPTCHA_SECRET_KEY,
'response' => $SecretKey
);
$verify = curl_init();
curl_setopt($verify, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($verify, CURLOPT_POST, true);
curl_setopt($verify, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($verify, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($verify, CURLOPT_RETURNTRANSFER, true);
$response_data = curl_exec($verify);
$response_data = json_decode($response_data);
curl_close($verify);
return $response_data;
}
}
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$ObjCaptcha = new Captcha();
$Retorno = $ObjCaptcha->getCaptcha($_POST['g-recaptcha-response']);
if ($Retorno->success) {
// echo 'CAPTCHA was completed successfully!';
###### PUT IN THE DATABASE ######
$fname = $_POST['fname'];
$lname = $_POST['lname'];
$sql = "INSERT INTO $dbname (firstname, lastname) VALUES ($fname,$lname)";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "
" . $conn->error;
}
} else {
$error_codes = 'error-codes';
if (isset($Retorno->$error_codes) && in_array("timeout-or-duplicate", $Retorno->$error_codes)) {
$captcha_msg = "The verification expired due to timeout, please try again.";
} else {
$captcha_msg = "Check to make sure your keys match the registered domain and are in the correct locations.
You may also want to doublecheck your code for typos or syntax errors.";
}
echo 'reCAPTCHA error: ' . $captcha_msg;
}
}
I you have any query then contact me.
I want the code and it works. But can you write it the same ,instead use the curl ,because I think the curl would work much better. Thank you
From where i can get recaptcha key
I am implementing Google reCAPTCHA V3. What should i verify? Please explain
You need to add your domain https://www.google.com/recaptcha/admin/create
then you can get key.
Read this Guides: https://developers.google.com/recaptcha/docs/v3
This comment has been removed by a blog administrator.