learndash_on_iis This function has been deprecated. learndash_on_iis() Checks if the server is on Microsoft IIS. ContentsDescription Return Source Changelog Related Namespace @package Description # Return # (boolean) Returns true if the server is on Microsoft IIS otherwise false. Source # File: includes/deprecated/5.0.0/functions.php Changelog # Changelog Version Description 5.0.0 This function has been deprecated. 2.1.0 Introduced. This function has been deprecated. Related # Namespace # global @package # LearnDash / Deprecated