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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 |
|---|---|
| 319 | |
| 320 | /** |
| 321 | * Fires after a navigation menu has been successfully updated. |
| 322 | * |
| 323 | * @since 3.0.0 |
| 324 | * |
| 325 | * @param int $menu_id ID of the updated menu. |
| 326 | * @param array $menu_data An array of menu data. |
| 327 | */ |
| 328 | do_action( 'wp_update_nav_menu', $menu_id, $menu_data ); |
| 329 | return $menu_id; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Save the properties of a menu item or create a new one. |
| 334 | * |
| 335 | * @since 3.0.0 |
| 336 | * |
| 337 | * @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan. |