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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 |
|---|---|
| 1854 | $type = 'taxonomy'; |
| 1855 | $callback = 'wp_nav_menu_item_taxonomy_meta_box'; |
| 1856 | $items = (array) get_taxonomies( array( 'show_ui' => true ), 'object' ); |
| 1857 | } |
| 1858 | |
| 1859 | if ( ! empty( $_POST['item-object'] ) && isset( $items[ $_POST['item-object'] ] ) ) { |
| 1860 | $menus_meta_box_object = $items[ $_POST['item-object'] ]; |
| 1861 | |
| 1862 | /** This filter is documented in wp-admin/includes/nav-menu.php */ |
| 1863 | $item = apply_filters( 'nav_menu_meta_box_object', $menus_meta_box_object ); |
| 1864 | |
| 1865 | $box_args = array( |
| 1866 | 'id' => 'add-' . $item->name, |
| 1867 | 'title' => $item->labels->name, |
| 1868 | 'callback' => $callback, |
| 1869 | 'args' => $item, |
| 1870 | ); |
| 1871 | |
| 1872 | ob_start(); |