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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
816 | update_option( 'theme_switched', $old_theme->get_stylesheet() ); |
817 | /** |
818 | * Fires after the theme is switched. |
819 | * |
820 | * @since 1.5.0 |
821 | * |
822 | * @param string $new_name Name of the new theme. |
823 | * @param WP_Theme $new_theme WP_Theme instance of the new theme. |
824 | */ |
825 | do_action( 'switch_theme', $new_name, $new_theme ); |
826 | } |
827 |
|
828 | /** |
829 | * Checks that current theme files 'index.php' and 'style.css' exists. |
830 | * |
831 | * Does not check the default theme, which is the fallback and should always exist. |
832 | * Will switch theme to the fallback theme if current theme does not validate. |
833 | * You can use the 'validate_current_theme' filter to return false to |
834 | * disable this functionality. |