Buhsl Captcha is a very simple, but powerful plug-in that helps you to prevent spam.
Plug-in don't use COOKIES or SESSION. So there is no annoying messages like
"You should enable cookies" for visitors. Plug-in use hashed captcha code value that
will be comparing with entered captcha value and check if correspondent image file exists on server.
Image of captcha created during request and stored at server.\
When user entered right captcha value image file will be removed.
If not, garbage collector will remove it after time life is passed.
Features:
- Configure from Admin panel
- JavaScript is not required
- Valid HTML
- Allows Trackbacks and Pingbacks
- Hide the CAPTCHA from logged in users and or admins
Requirements/Restrictions:
- Works with Wordpress 2.9.2+, WPMU, and BuddyPress
- PHP 4.0.6 or above with GD2 library support.
- Your theme must have a
<?php do_action('comment_form', $post->ID); ?> tag inside your comments.php form.