411 REFERENCE · Wikibooks
CAPTCHA/Integration/The Anti-CAPTCHA
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
This is a CAPTCHA killer. It needs nothing on the form except a hidden field and some server-side code.
PHP Example
//... Your lovely form here
// Example, please adapt
echo "<input type=hidden name=url />";
//... Rest of your lovely form here
verification
// compare
if ($_POST['url'] != "") {
// abort!
}
// processing code here
See also
Stronger version