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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 |
|---|---|
| 645 | } |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | $sidebars_widgets = wp_get_sidebars_widgets(); |
| 650 | if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) { |
| 651 | /** This action is documented in wp-includes/widget.php */ |
| 652 | do_action( 'dynamic_sidebar_before', $index, false ); |
| 653 | /** This action is documented in wp-includes/widget.php */ |
| 654 | do_action( 'dynamic_sidebar_after', $index, false ); |
| 655 | /** This filter is documented in wp-includes/widget.php */ |
| 656 | return apply_filters( 'dynamic_sidebar_has_widgets', false, $index ); |
| 657 | } |
| 658 | |
| 659 | /** |
| 660 | * Fires before widgets are rendered in a dynamic sidebar. |
| 661 | * |
| 662 | * Note: The action also fires for empty sidebars, and on both the front end |
| 663 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| Line | Code |
| 778 | * Note: The action also fires for empty sidebars, and on both the front end |
| 779 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| 780 | * |
| 781 | * @since 3.9.0 |
| 782 | * |
| 783 | * @param int|string $index Index, name, or ID of the dynamic sidebar. |
| 784 | * @param bool $has_widgets Whether the sidebar is populated with widgets. |
| 785 | * Default true. |
| 786 | */ |
| 787 | do_action( 'dynamic_sidebar_after', $index, true ); |
| 788 | |
| 789 | /** |
| 790 | * Filters whether a sidebar has widgets. |
| 791 | * |
| 792 | * Note: The filter is also evaluated for empty sidebars, and on both the front end |
| 793 | * and back end, including the Inactive Widgets sidebar on the Widgets screen. |
| 794 | * |
| 795 | * @since 3.9.0 |
| 796 | * |