Yoast\WP\SEO\Helpers

Product_Helper::is_premium() │ public │ Yoast 1.0

Checks if the installed version is Yoast SEO Premium.

{} Это метод класса: Product_Helper{}

Хуков нет.

Возвращает

true|false. True when is premium.

Использование

$Product_Helper = new Product_Helper();
$Product_Helper->is_premium();

Код Product_Helper::is_premium() Yoast 19.10

yoast/src/helpers/product-helper.php 
public function is_premium() {
	return \defined( 'WPSEO_PREMIUM_FILE' );
}