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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 |
|---|---|
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | $sidebars_widgets = wp_get_sidebars_widgets(); |
| 629 | if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) { |
| 630 | /** This action is documented in wp-includes/widget.php */ |
| 631 | do_action( 'dynamic_sidebar_before', $index, false ); |
| 632 | /** This action is documented in wp-includes/widget.php */ |
| 633 | do_action( 'dynamic_sidebar_after', $index, false ); |
| 634 | /** This filter is documented in wp-includes/widget.php */ |
| 635 | return apply_filters( 'dynamic_sidebar_has_widgets', false, $index ); |
| 636 | } |
| 637 | |
| 638 | /** |
| 639 | * Fires before widgets are rendered in a dynamic sidebar. |
| 640 | * |
| 641 | * Note: The action also fires for empty sidebars, and on both the front end |
| 642 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| Line | Code |
| 746 | * Note: The action also fires for empty sidebars, and on both the front end |
| 747 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| 748 | * |
| 749 | * @since 3.9.0 |
| 750 | * |
| 751 | * @param int|string $index Index, name, or ID of the dynamic sidebar. |
| 752 | * @param bool $has_widgets Whether the sidebar is populated with widgets. |
| 753 | * Default true. |
| 754 | */ |
| 755 | do_action( 'dynamic_sidebar_after', $index, true ); |
| 756 | |
| 757 | /** |
| 758 | * Filter whether a sidebar has widgets. |
| 759 | * |
| 760 | * Note: The filter is also evaluated for empty sidebars, and on both the front end |
| 761 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| 762 | * |
| 763 | * @since 3.9.0 |
| 764 | * |