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Tolerim
2 minutes ago

How do I handle an invalid response from the Google reCAPTCHA input?

The error message I received was "stdClass Object ( [success] => [error-codes] => Array ( [0] => invalid-input-response ) )". This error occurred when I was implementing an invisible Google reCAPTCHA on my website, despite having valid site and secret keys. Here is the full code: To solve this issue, I need to ensure that the value of the "ge-recaptcha" input field is being set properly. Additionally, I can try testing the reCAPTCHA on a different domain to check if the issue persists. Any suggestions on how to fix this problem are greatly appreciated. The Code: When implementing an invisible Google reCAPTCHA on my website, I encountered the following error:

stdClass Object ( [success] => [error-codes] => Array ( [0] => invalid-input-response ) ) Despite having valid site and secret keys, this error message appeared. The following code block is the full implementation:

<script src="https://www.google.com/recaptcha/api.js?render=6Lf_wNwlAAAAAFNZFttJLg6ii2KMsPvquGTEi1fh"></script>
PHP code

 <?php
  if(isset($_POST['submit'])){
    $url ='https://www.google.com/recaptcha/api/siteverify';
    $secret = '6Lf_wNwlAAAAAJ7eikDFSiBSD0vfuA5XFvcnEjou';
    $response = $_POST['ge-recaptcha'];
    $remoteip = $SERVER['REMOTEADDR'];
    $request = filegetcontents($url . '?secret=' . $secret. '&response=' . $response . '&remoteip=' . $remoteip);
    $result=json_decode($request);
    print_r($result);
    if($result->success == true){
        ?>
        <script>
        alert("data saved successfully");
        </script>
        <?php
    }else{
        ?>
        <script>
        alert("data not saved");
        </script>
        <?php
    }
}
?>
HTML code

<form action="" method="post" id="form">
    <div id="alert_message"></div>
    <div class="form-group">
        <label for="email">Email:</label>
        <input type="text" class="form-control" id="email" placeholder="Enter your email" name="email">
    </div>
    <input type="hidden" name="ge-recaptcha" value="" id="recaptchaResponse">
    <input type="submit" name="submit" value="Submit" class="btn btn-success btn-lg" style="padding: 6px 46px; margin: 16px 0 0 0;">
</form>
JavaScript code

<script>
    document.querySelector('#form').addEventListener('submit', function(event) {
        function validateForm() {
            let isValid = true;
            const emailInput = document.querySelector('#email');
            if (emailInput.value.trim() === '') {
                alert('Please enter an email address');
                return false;
            }
            return isValid;
        }

        grecaptcha.ready(function() {
            grecaptcha.execute('6Lf_wNwlAAAAAFNZFttJLg6ii2KMsPvquGTEi1fh', { action: 'submit' }).then(function(token) {
                let response = document.getElementById('recaptchaResponse');
                response.value = token;
            });
        });

        if (!validateForm()) {
            event.preventDefault();
        }
    });
</script>
If anyone has any suggestions on how to fix this issue, it would be greatly appreciated!

Answers(1)
avatar
Tolerim
2 minutes ago
Verified Answer
The error message stdClass Object ( [success] => [error-codes] => Array ( [0] => invalid-input-response ) ) is indicating that the invisible reCAPTCHA has failed verification due to an invalid input response. This means that the token generated by the reCAPTCHA is not valid or is not being passed to the server correctly. To fix this issue, you can try the following steps: 1. Make sure that the reCAPTCHA site key and secret key are correct and match the domain where the reCAPTCHA is being used. 2. Check if the $_POST variable ge-recaptcha is being properly set before being sent to the server. If not, you can try using the g-recaptcha-response parameter instead. 3. Verify that the token variable is being properly passed to the #recaptchaResponse input field and being sent to the server. 4. Double-check your server-side code, specifically the $request variable to ensure that the POST request includes the correct keys and secrets. It's also worth noting that the file_get_contents() function used to retrieve the verification response from Google may not work in some environments due to security restrictions. In such cases, you may need to use cURL or another method to retrieve the response. By following these steps, you should be able to fix the error and successfully verify the invisible reCAPTCHA.
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