/**
* Get the singleton instance of this class
*
* @return object
*/
public static function get_instance()
{
if (!self::$instance instanceof self) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Returns the result of validate bool from WPSEO_Utils if this class exists, otherwise it will return the result from
* validate_bool from WPSEO_Option_Woo
*
* @param $bool_to_validate
*
* @return bool
*/
public static function validate_bool($bool_to_validate)
{
if (class_exists('WPSEO_Utils') && method_exists('WPSEO_Utils', 'validate_bool')) {
return WPSEO_Utils::validate_bool($bool_to_validate);
}
return WPSEO_Option_Woo::validate_bool($bool_to_validate);
}