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yaCAPTCHA

yaCAPTCHA is Yet Another CAPTCHA plugin for WordPress based on KCAPTCHA.

yaCAPTCHA is a CAPTCHA plugin for WordPress that adds an image in the comment form of your WordPress application. In order to post comments, users will have to write down the characters that are part of the image. This can help prevent spam from automated bots.

Requirements

  • WordPress 2.0.11 or above.
  • PHP v. 4.0.6 or above with GD2 library support.
  • Theme must support the ‘comment_form’ action.

How to install?

You must first copy the directory yacaptcha in your WordPress plugin directory which must be /wp-content/plugins/ . After, you need to go in your site admin, in the Plugins section and activate the yaCAPTCHA plugin.

It should works flawlessly with the default theme.

The default theme places the additionnal comment form items after the submit button. I suggest you change it so that it appears before the submit button. This might also apply to other themes. Have a look at the “How can I customize it?” section.

What does it looks like?

Here are some samples images that are produced by the CAPTCHA generator.

  • CAPTCHA Image Sample 1
  • CAPTCHA Image Sample 2
  • CAPTCHA Image Sample 3
  • CAPTCHA Image Sample 4

Here is what the comment form looks like with the default theme.

yaCAPTCHA comment form

How can I customize it?

You can customize the image properties like how many characters are shown or which characters are used by changing values in the kcaptcha_config.php file.

You can change the location of the CAPTCHA field within the comment form by changing the location of the ‘comment_form’ call in your theme’s comments.php file. The CAPTCHA field appears at the same location as the ‘comment_form’ call.

You can customize what appears in the CAPTCHA field, the messages used and how it is displayed be changing the code in the yaCaptchaCommentForm function located in the yacaptcha.php file.

It does not work!

First, make sure that you meet all the requirements. Make sure that your theme support the ‘comment_form’ action. There should be a call similar to do_action(’comment_form’, $post->ID) in your theme’s comments.php file where the comment form section is located.

If you are still having problems, you can contact me.

Version history

  • 1.0: Updated the CAPTCHA generator, KCAPTCHA, to the latest version. Tested to work with Wordpress 2.5.1 and the default theme.
  • 0.9: Make all file cases lower to prevent potential problems. Remove CAPTCHA for logged users.
  • 0.8: Initial version. Should work flawlessly with WordPress 2.3.2 and the default theme.

Thanks

Thanks to Kruglov Sergei for creating KCAPTCHA, his pretty good CAPTCHA. You can visit KCAPTCHA website here.

Download

Download yaCAPTCHA (version 1.0).