Everest Forms - Support reCAPTCHA v2 Language code. (Updated for 1.7.0)

functions.php

<?php // Do not include this if already open!

/**
 * Code goes in theme functions.php.
 */
add_filter( 'everest_forms_frontend_recaptcha_url', 'evf_recaptcha_lang_code', 10, 2 );

/**
 * Language code support for reCAPTCHA v2.
 *
 * @param string $recaptcha_url  reCAPTCHA Url.
 * @param string $recaptcha_type reCAPTCHA type.
 *
 * @return string Modified url with language code.
 */
function evf_recaptcha_lang_code( $recaptcha_url, $recaptcha_type ) {
	if ( 'v2' === $recaptcha_type ) {
		/**
		 * Forces the widget to render in a specific language.
		 * Additionally, uuto-detects the user's language if unspecified.
		 *
		 * @see https://developers.google.com/recaptcha/docs/display#config
		 */
		$recaptcha_url = add_query_arg( 'hl', 'id', $recaptcha_url );
	}

	return $recaptcha_url;
}