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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 |
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662 | /** |
663 | * Filters the navigation menu items being returned. |
664 | * |
665 | * @since 3.0.0 |
666 | * |
667 | * @param array $items An array of menu item post objects. |
668 | * @param object $menu The menu object. |
669 | * @param array $args An array of arguments used to retrieve menu item objects. |
670 | */ |
671 | return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args ); |
672 | } |
673 |
|
674 | /** |
675 | * Decorates a menu item object with the shared navigation menu item properties. |
676 | * |
677 | * Properties: |
678 | * - ID: The term_id if the menu item represents a taxonomy term. |
679 | * - attr_title: The title attribute of the link element for this menu item. |
680 | * - classes: The array of class attribute values for the link element of this menu item. |