I am trying to implement Google reCAPTCHA v3 inside a visual studio 2022 PHP project.
For some reason, when I execute the following command to display the values of success and score, I see empty values for '$Return->success' and '$Return->score':
echo '<script type="text/javascript">alert(
"response->success: ' . $response->success .
"\\nresponse->score: " . $response->score . '");</script>';
I have created my own google reCAPTCHA v3 site key and secret key and have inserted them into the source code at the top of the file.
Image of empty '$Return->success' and '$Return->score' values
The following is the source code in the PHP file:
<?php
define('SITE_KEY', '6LcfntEfAAAAAJWKSw4RCluMrbC6NVlwdyFAbwf4');
define('SECRET_KEY', '6LcfntEfAAAAAI6pC8vYRv4Qx8rw2hL7IDXAuK2T');
if($_POST){
function getCaptcha($SecretKey){
$Response = file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=".SECRET_KEY."&response={$SecretKey}");
$Return = json_decode($Response);
return $Return;
}
$Return = getCaptcha($_POST['g-recaptcha-response']);
echo '<script type="text/javascript">alert(
"response->success: ' . $response->success .
"\\nresponse->score: " . $response->score . '");</script>';
//var_dump($Return);
if($Return->success == true && $Return->score > 0.5){
echo "Success!";
}else{
echo "You are a Robot!!";
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>ReCaptcha V3</title>
<script src='https://www.google.com/recaptcha/api.js?render=<?php echo SITE_KEY; ?>'></script>
</head>
<body>
<form action="/" method="POST">
<input type="text" name="name" /><br />
<input type="hidden" id="g-recaptcha-response" name="g-recaptcha-response" /><br />
<input type="submit" value="Submit" />
</form>
<script>
grecaptcha.ready(function() {
grecaptcha.execute('<?php echo SITE_KEY; ?>', {action: 'homepage'})
.then(function(token) {
//console.log(token);
document.getElementById('g-recaptcha-response').value=token;
});
});
</script>
</body>
</html>
