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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 |
---|---|
608 | /** |
609 | * Filter the navigation menu items being returned. |
610 | * |
611 | * @since 3.0.0 |
612 | * |
613 | * @param array $items An array of menu item post objects. |
614 | * @param object $menu The menu object. |
615 | * @param array $args An array of arguments used to retrieve menu item objects. |
616 | */ |
617 | return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args ); |
618 | } |
619 |
|
620 | /** |
621 | * Decorates a menu item object with the shared navigation menu item properties. |
622 | * |
623 | * Properties: |
624 | * - db_id: The DB ID of this item as a nav_menu_item object, if it exists (0 if it doesn't exist). |
625 | * - object_id: The DB ID of the original object this menu item represents, e.g. ID for posts and term_id for categories. |
626 | * - type: The family of objects originally represented, such as "post_type" or "taxonomy." |