Simple and Cool jQuery CAPTCHA Plugin - Real Person

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Simply create a form as you normally would and include a text field to use for the real person verification. In this example, my field would have a class of "your-captcha".

<script type="text/javascript">
$(function() {
	$('input.your-captcha').realperson();
});
</script>

So after you have the front-end working, we need to verify that the code entered was correct. Use this:

function rpHash($value) { 
    $hash = 5381; 
    $value = strtoupper($value); 
    for($i = 0; $i < strlen($value); $i++) { 
        $hash = (($hash << 5) + $hash) + ord(substr($value, $i)); 
    } 
    return $hash; 
} 
 
if (rpHash($_POST['realPerson']) == $_POST['realPersonHash']) { 
    ...
}

For a stripped down example, go here: http://keith-wood.name/realPersonBasics.html

For more detailed documentation, go to http://keith-wood.name/realPerson.html