Cloudflare Turnstile contact forms

Works with the Simple Cloudflare Turnstile plugin to support usage on a custom contact form.

https://wordpress.org/plugins/simple-cloudflare-turnstile/

Shortcode to place the Turnstile within your contact form layout:

add_shortcode( 'ccom_turnstile', function() {

	if( ! function_exists( 'cfturnstile_field_show' ) ) {
		return;
	}

	ob_start();
	cfturnstile_field_show( '', '', 'ccom_turnstile', mt_rand() );
	return ob_get_clean();

} );

Function to tie into your contact form’s submit action (hook and code depends on which forms plugin or custom code that you use):

add_action( 'contact_form_submit', function() {

	if( ! function_exists( 'cfturnstile_check' ) ) {
		return false;
	}

	if( ! get_option( 'cfturnstile_key' ) ) {
		return false;
	}

	if( empty( $_POST['cf-turnstile-response'] ) ) {
		return false;
	}

	$check = cfturnstile_check();
	$success = $check['success'];
	return $success === true;

} );

Instructions for Cloudflare Turnstile contact forms

  1. Log into a staging or locally hosted clone of your site.
  2. Install and activate Code Snippets plugin.
  3. WP Admin > Snippets > Add New
  4. Copy and paste the code from the section above.
  5. Check to ensure formatting came over properly.
  6. Customize the code as desired.
  7. Add a meaningful title.
  8. Select whether to run on front-end or back-end (or both).
  9. Click “Save and Activate”.
  10. Test your site to ensure it works.
  11. Disable if any problems, or recover.
  12. Repeat for live environment.

Need help modifying Cloudflare Turnstile contact forms?

Contact me. I can help with fitting projects or refer to my partner.

License

All code snippets are licensed GPLv2 (or later) matching WordPress licensing.

Except when otherwise stated in writing the copyright holders and/or other parties provide the program as-is without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

Disclaimer of warranty
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