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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 |
---|---|
731 | update_option( 'theme_switched', $old_theme->get_stylesheet() ); |
732 | /** |
733 | * Fires after the theme is switched. |
734 | * |
735 | * @since 1.5.0 |
736 | * |
737 | * @param string $new_name Name of the new theme. |
738 | * @param WP_Theme $new_theme WP_Theme instance of the new theme. |
739 | */ |
740 | do_action( 'switch_theme', $new_name, $new_theme ); |
741 | } |
742 |
|
743 | /** |
744 | * Checks that current theme files 'index.php' and 'style.css' exists. |
745 | * |
746 | * Does not check the default theme, which is the fallback and should always exist. |
747 | * Will switch theme to the fallback theme if current theme does not validate. |
748 | * You can use the 'validate_current_theme' filter to return false to |
749 | * disable this functionality. |