Sense-Captcha is a free service that protects your website from spam and abuse.
This documentation is designed for people familiar with HTML forms and server-side processing. To use Sense-Captcha, you will probably need to edit some code.
We hope you find this documentation easy to follow.
Client-Side
The easiest method for using the Sense-Captcha widget on your webpage is to include the necessary JavaScript and StyleSheet resources and a sense-captcha tag. The sense-captcha tag is a DIV element with the id 'sense-captcha':
<html>
<head>
<title>Sense-Captcha demo: Simple page</title>
<script src="https://nitinkaveriappa.com/SenseCaptcha/js/sense_captcha.js"></script>
<link href="https://nitinkaveriappa.com/SenseCaptcha/css/style.css" rel="stylesheet">
</head>
<body>
<form action="?" method="POST">
<!-- Form attributes -->
<input type="submit" value="Submit">
<div id="sense-captcha"></div>
</form>
</body>
</html>Paste this snippet before the closing </head> tag on your HTML template:
<script src="https://nitinkaveriappa.com/SenseCaptcha/js/sense_captcha.js"></script>
<link href="https://nitinkaveriappa.com/SenseCaptcha/css/style.css" rel="stylesheet">Paste this snippet before the end of your </form> tag preferably after the buttons on your HTML template:
<div id="sense-captcha"></div>Server-Side
When your users submit the form where you integrated Sense-Captcha, you'll get as part of the payload a string with the name "Sense-result". In order to check whether Sense-Captcha has verified that user, send a request with these parameters:
URL: https://nitinkaveriappa.com/SenseCaptcha/result/$sense_result$
| Parameter | Description |
|---|---|
| Required. The user response token provided by Sense-Captcha, verifying the user on your site. |
if(isset($_POST['Sense-result']))
{
$sense_result = $_POST['Sense-result'];
}
else
{
header("Location:index.php?type=bot");
}
$success=file_get_contents("https://nitinkaveriappa.com/SenseCaptcha/result/$sense_result");
if($success=="true")
{
//All OK!!! Not a BOT!
//Do whatever...
}
else
{
//Danger!!! It's a BOT!
//Do whatever...
}A sample implementation is provided in this repo which is available for use.