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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 |
|---|---|
| 1176 | $menus_meta_box_object = $items[ $_POST['item-object'] ]; |
| 1177 | /** |
| 1178 | * Filter a nav menu meta box object. |
| 1179 | * |
| 1180 | * @since 3.0.0 |
| 1181 | * |
| 1182 | * @param object $menus_meta_box_object A nav menu meta box object, such as Page, |
| 1183 | * Post, Category, Tag, etc. |
| 1184 | */ |
| 1185 | $item = apply_filters( 'nav_menu_meta_box_object', $menus_meta_box_object ); |
| 1186 | ob_start(); |
| 1187 | call_user_func_array($callback, array( |
| 1188 | null, |
| 1189 | array( |
| 1190 | 'id' => 'add-' . $item->name, |
| 1191 | 'title' => $item->labels->name, |
| 1192 | 'callback' => $callback, |
| 1193 | 'args' => $item, |
| 1194 | ) |