gform_recaptcha_valid_hostnames

• Parameters
• Examples
• Add additional hostnames for reCAPTCHA validation.
• Placement
• Source Code
• Since

The filter gform_recaptcha_valid_hostnames allows developers to define the set of hostnames considered valid for reCAPTCHA verification. By default, Google returns a ‘hostname’ value in reCAPTCHA verification results.

Usage

add_filter( 'gform_recaptcha_valid_hostnames', 'your_function_name', 10, 1 );

Parameters

Examples

Add additional hostnames for reCAPTCHA validation.

add_filter( 'gform_recaptcha_valid_hostnames', 'add_custom_recaptcha_hostnames', 10, 1 );
function add_custom_recaptcha_hostnames( $valid_hostnames ) {
    $valid_hostnames[] = 'staging.example.com';
    $valid_hostnames[] = 'dev.example.com';
    
    return $valid_hostnames;
}

Placement

This code can be used in the functions.php file of the active theme, a custom functions plugin, a custom add-on, or with a code snippets plugin.

See also the PHP section in this article: Where Do I Put This Code?

Source Code

This filter is located in class-token-verifier.php.

Since

This filter was added in Gravity Forms reCAPTCHA 1.0.