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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 |
|---|---|
| 968 | } |
| 969 | } |
| 970 | } |
| 971 | |
| 972 | $sidebars_widgets = wp_get_sidebars_widgets(); |
| 973 | if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) { |
| 974 | /** This action is documented in wp-includes/widgets.php */ |
| 975 | do_action( 'dynamic_sidebar_before', $index, false ); |
| 976 | /** This action is documented in wp-includes/widgets.php */ |
| 977 | do_action( 'dynamic_sidebar_after', $index, false ); |
| 978 | /** This filter is documented in wp-includes/widgets.php */ |
| 979 | return apply_filters( 'dynamic_sidebar_has_widgets', false, $index ); |
| 980 | } |
| 981 | |
| 982 | /** |
| 983 | * Fires before widgets are rendered in a dynamic sidebar. |
| 984 | * |
| 985 | * Note: The action also fires for empty sidebars, and on both the front-end |
| 986 | * and back-end, including the Inactive Widgets sidebar on the Widgets screen. |
| Line | Code |
| 1090 | * Note: The action also fires for empty sidebars, and on both the front-end |
| 1091 | * and back-end, including the Inactive Widgets sidebar on the Widgets screen. |
| 1092 | * |
| 1093 | * @since 3.9.0 |
| 1094 | * |
| 1095 | * @param int|string $index Index, name, or ID of the dynamic sidebar. |
| 1096 | * @param bool $has_widgets Whether the sidebar is populated with widgets. |
| 1097 | * Default true. |
| 1098 | */ |
| 1099 | do_action( 'dynamic_sidebar_after', $index, true ); |
| 1100 | |
| 1101 | /** |
| 1102 | * Filter whether a sidebar has widgets. |
| 1103 | * |
| 1104 | * Note: The filter is also evaluated for empty sidebars, and on both the front-end |
| 1105 | * and back-end, including the Inactive Widgets sidebar on the Widgets screen. |
| 1106 | * |
| 1107 | * @since 3.9.0 |
| 1108 | * |