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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 680 | } |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | $sidebars_widgets = wp_get_sidebars_widgets(); |
| 685 | if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) { |
| 686 | /** This action is documented in wp-includes/widget.php */ |
| 687 | do_action( 'dynamic_sidebar_before', $index, false ); |
| 688 | /** This action is documented in wp-includes/widget.php */ |
| 689 | do_action( 'dynamic_sidebar_after', $index, false ); |
| 690 | /** This filter is documented in wp-includes/widget.php */ |
| 691 | return apply_filters( 'dynamic_sidebar_has_widgets', false, $index ); |
| 692 | } |
| 693 | |
| 694 | /** |
| 695 | * Fires before widgets are rendered in a dynamic sidebar. |
| 696 | * |
| 697 | * Note: The action also fires for empty sidebars, and on both the front end |
| 698 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| Line | Code |
| 813 | * Note: The action also fires for empty sidebars, and on both the front end |
| 814 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| 815 | * |
| 816 | * @since 3.9.0 |
| 817 | * |
| 818 | * @param int|string $index Index, name, or ID of the dynamic sidebar. |
| 819 | * @param bool $has_widgets Whether the sidebar is populated with widgets. |
| 820 | * Default true. |
| 821 | */ |
| 822 | do_action( 'dynamic_sidebar_after', $index, true ); |
| 823 | |
| 824 | /** |
| 825 | * Filters whether a sidebar has widgets. |
| 826 | * |
| 827 | * Note: The filter is also evaluated for empty sidebars, and on both the front end |
| 828 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| 829 | * |
| 830 | * @since 3.9.0 |
| 831 | * |