In the e-commerce, it is avoidable that websites are accessed by a large number of people from different countries at the same time. So it is very necessary to develop multi-language for a website. And Magento supports you conduct this function on your web-store.
There are some functions of Magento core which are written in Block, Model or Helper. When we use these functions due to our purposes we see that they are not suitable and as same as we wish. Therefore, we can utilize Override class feature of Magento to rewrite those functions according to our uses.
As you know Magento is built based on module architecture, which leads to the requirement that there must be an interaction between modules. Hence, in this part we will learn about the way these modules used.