The importproducts() function iterate through the array and creates the simple and configurable products.The options.csv file contains the color options corresponding to each products. Based on that it decides whether to create simple or configurable products.
This tutorial I am explaining how to import tier prices magento. Tier pricing gives a quantity discount from the catalog list and product detail pages. The discount can be applied to a specific store view or customer group .
In this example I reading the tier prices from the discounts file which I exported from the opencart.
This tutorial explains how to import products magento using script.Here products are importing from opencart to magento using the script.I have exported the following CSV files from the opencart backend.
This script import all the categories, attribute and the products to magento. Its also create the simple and configurable products and assign that to the new categories. Here I am also importing the related products as well.