learndash_theme_load do_action( 'learndash_theme_load', string $theme_key ) Action when active theme is loading. ContentsDescription Parameters Source Changelog Related @package Description # Parameters # $theme_key (string) Theme key. Source # File: themes/class-ld-themes-register.php Changelog # Changelog Version Description 4.0.0 Introduced. Related # @package # LearnDash / Templates