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Math Captcha for Gravity Forms

开发者 codedbyabir
更新时间 2026年7月2日 03:54
PHP版本: 7.4 及以上
WordPress版本: 7.0
版权: GPLv2 or later
版权网址: 版权信息

标签

captcha forms gravity forms spam protection math captcha

下载

1.0.0

详情介绍:

Math Captcha for Gravity Forms adds a basic "what is X + Y" challenge to any Gravity Forms form, helping block automated spam submissions without relying on third-party CAPTCHA services, external API calls, or client-side JavaScript. How it works
  1. Add three fields to your Gravity Forms form:
  2. A Number (or Hidden) field with Admin Label num1
  3. A Number (or Hidden) field with Admin Label num2
  4. A Number field with Admin Label math_answer, where the visitor types their answer
  5. Add an HTML field containing the placeholder {math_question} wherever you want the question text to appear.
  6. The plugin fills num1 and num2 with random numbers on each page load, replaces {math_question} with the rendered question, and validates math_answer server-side on submit.
The same numbers persist across a failed-validation reload, so the question a visitor sees always matches what's being validated. Why server-side? No JavaScript means no scripts to block, no client-side bypass, and no impact on page-load performance. This plugin is independently developed and is not affiliated with, endorsed by, or sponsored by Rocketgenius, Inc. or Gravity Forms.

安装:

  1. Upload the math-captcha-for-gravity-forms folder to /wp-content/plugins/, or install directly through the WordPress plugin screen.
  2. Activate the plugin through the 'Plugins' screen in WordPress.
  3. Make sure Gravity Forms is installed and active — this plugin does nothing without it.
  4. Edit the form(s) you want to protect and add the three fields described above (Admin Labels num1, num2, math_answer) plus an HTML field containing {math_question}.

升级注意事项:

1.0.0 Initial release.

常见问题:

Does this work without Gravity Forms?

No. This plugin only adds functionality on top of Gravity Forms and does nothing if Gravity Forms is not installed and active. You'll see an admin notice if it's missing.

Does this send any data to external services?

No. All number generation and validation happens entirely server-side, on your own site.

Can I style the question text?

Yes — the question is wrapped in a <strong> tag inside your HTML field, so you can wrap it with your own markup/CSS in the HTML field content.

What happens if I don't add the math_answer field?

The plugin checks for all three fields (num1, num2, math_answer) by Admin Label. If any are missing from a given form, validation is skipped silently for that form, so it won't break forms that aren't using the captcha.

更新日志:

1.0.0