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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 |
---|---|
500 | * |
501 | * @since 4.4.0 |
502 | * |
503 | * @see wp_update_nav_menu_item() |
504 | * |
505 | * @param int $menu_id ID of the updated menu. |
506 | * @param int $menu_item_db_id ID of the new menu item. |
507 | * @param array $args An array of arguments used to update/add the menu item. |
508 | */ |
509 | do_action( 'wp_add_nav_menu_item', $menu_id, $menu_item_db_id, $args ); |
510 | } |
511 |
|
512 | // Associate the menu item with the menu term |
513 | // Only set the menu term if it isn't set to avoid unnecessary wp_get_object_terms() |
514 | if ( $menu_id && ( ! $update || ! is_object_in_term( $menu_item_db_id, 'nav_menu', (int) $menu->term_id ) ) ) { |
515 | wp_set_object_terms( $menu_item_db_id, array( $menu->term_id ), 'nav_menu' ); |
516 | } |
517 |
|
518 | if ( 'custom' == $args['menu-item-type'] ) { |