reCAPTCHA V2 Failing On Server Side Validation
Question
My reCaptcha V2 "I'm not a robot" is failing on the server side. It seems to be failing at: post_captcha($_POST['g-recaptcha-response'])
Both the public & pvt key are correct and on the correct domain.
It's been 3 hours since I've created the reCAPTCHA so maybe it takes a while to process my domain through the system? I'm not sure....
Here is the HTML:
<html>
<head>
<script src="https://www.google.com/recaptcha/api.js" async defer></script>
</head>
<body>
<form action="contact-form.php" method="POST">
<div class="g-recaptcha" data-sitekey="PUBLIC KEY"></div>
<br/>
<input type="submit" value="Submit">
</form>
</body>
</html>
Here is the PHP:
<?php
// Checks if form has been submitted
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
function post_captcha($user_response) {
$fields_string = '';
$fields = array(
'secret' => 'PVT KEY',
'response' => $user_response
);
foreach($fields as $key=>$value)
$fields_string .= $key . '=' . $value . '&';
$fields_string = rtrim($fields_string, '&');
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);
$result = curl_exec($ch);
curl_close($ch);
return json_decode($result, true);
}
// Call the function post_captcha
$res = post_captcha($_POST['g-recaptcha-response']);
if (!$res['success']) {
// What happens when the CAPTCHA wasn't checked
echo '<p>Please go back and make sure you check the security CAPTCHA box.</p><br>';
} else {
echo 'success';
}
}
?>
Any help will be greatly appreciated. Thank you.
1 answers
solution1
0 ACCPTED 2021-05-16 12:13:29
Long time no answer. The issue was because of my web service provider having limitations on the shared server I was subscribe to eg not being able to edit php.ini config file.
Solution: don't use a shared server!
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