1C-Bitrix :: Создает зеркальную копию из разделов каталога товаров в инфоблок меню и прописывает связь разделов по полю UF_LINK_CATALOG

bx_create_catalog_menu.php

<?php
include $_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/prolog_before.php';

define('DEF_IB_CATALOG', 1); /** ИБ каталога товаров */
define('DEF_IB_MENU_CATALOG', 2); /** ИБ каталога меню */

$arListAdd = Array();

$db = new CIBlockSection;

$addSection = function($catalogSID, $parentSID, $code, $name, $sort) use($db, &$arListAdd){

	$arListAdd[$catalogSID] = $db-> add(
		Array(
			"ACTIVE" => 'Y',
		  	"IBLOCK_SECTION_ID" => (int) $parentSID,
		  	"IBLOCK_ID" => DEF_IB_MENU_CATALOG,
		  	"CODE" => (string) $code,
		  	"NAME" =>  (string) $name,
		  	"SORT" => (int) $sort <= 0 ? 500 : (int) $sort,
		  	"UF_LINK_CATALOG" => (int) $catalogSID
		)
	);		
};

$addSection(0, 0, 'catalog', 'Каталог');

$dbSection = \Bitrix\Iblock\SectionTable::getList(
	Array(
		'order' => Array(
			'DEPTH_LEVEL' => 'ASC',
			'SORT' => 'ASC'
		),
		'filter' => Array(
			'ACTIVE' => 'Y',
			'GLOBAL_ACTIVE' => 'Y',
			'IBLOCK_ID' => DEF_IB_CATALOG
		),
		'select' => Array(
			'ID',
			'IBLOCK_SECTION_ID',
			'NAME',
			'CODE',
			'SORT'
		)
	)
);

while( $arSection = $dbSection-> fetch() ){

	$addSection(
		$arSection['ID'], 
		$arListAdd[ 
			(int) $arSection['IBLOCK_SECTION_ID'] 
		], 
		$arSection['CODE'], 
		$arSection['NAME'],
		$arSection['SORT']
	);
}

echo 'Y';

?>

Пример созданных разделов в инфоблоке "Меню каталога товаров":