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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 |
|---|---|
| 288 | |
| 289 | /** |
| 290 | * Fires after a navigation menu has been successfully updated. |
| 291 | * |
| 292 | * @since 3.0.0 |
| 293 | * |
| 294 | * @param int $menu_id ID of the updated menu. |
| 295 | * @param array $menu_data An array of menu data. |
| 296 | */ |
| 297 | do_action( 'wp_update_nav_menu', $menu_id, $menu_data ); |
| 298 | return $menu_id; |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Save the properties of a menu item or create a new one. |
| 303 | * |
| 304 | * @since 3.0.0 |
| 305 | * |
| 306 | * @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan. |