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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 |
|---|---|
| 815 | update_option( 'theme_switched', $old_theme->get_stylesheet() ); |
| 816 | /** |
| 817 | * Fires after the theme is switched. |
| 818 | * |
| 819 | * @since 1.5.0 |
| 820 | * |
| 821 | * @param string $new_name Name of the new theme. |
| 822 | * @param WP_Theme $new_theme WP_Theme instance of the new theme. |
| 823 | */ |
| 824 | do_action( 'switch_theme', $new_name, $new_theme ); |
| 825 | } |
| 826 | |
| 827 | /** |
| 828 | * Checks that current theme files 'index.php' and 'style.css' exists. |
| 829 | * |
| 830 | * Does not check the default theme, which is the fallback and should always exist. |
| 831 | * Will switch theme to the fallback theme if current theme does not validate. |
| 832 | * You can use the 'validate_current_theme' filter to return false to |
| 833 | * disable this functionality. |