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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 |
|---|---|
| 229 | return 0; |
| 230 | |
| 231 | $menu_id = (int) $_menu->term_id; |
| 232 | |
| 233 | $update_response = wp_update_term( $menu_id, 'nav_menu', $args ); |
| 234 | |
| 235 | if ( is_wp_error( $update_response ) ) |
| 236 | return $update_response; |
| 237 | |
| 238 | do_action( 'wp_update_nav_menu', $menu_id, $menu_data ); |
| 239 | return $menu_id; |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Save the properties of a menu item or create a new one. |
| 244 | * |
| 245 | * @since 3.0.0 |
| 246 | * |
| 247 | * @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan. |