subdirectory - Need help / advise in sub directory creation in php

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Let's consider a showroom with multiple branches. Assume the parent showroom name is "abc". Suppose it has 3 franchises. efg ,jkl ,xyz. All these franchises sharing the same products as in the parent "abc".

Here I have the parent domain name www.abc.com. It has 3 subdomains abc.com/efg , abc.com/jkl, abc.com/xyz

The MySQL DB tables in abc.com are products, franchises. The table products consist of showroom products and the franchise consists of their corresponding logos and address. Here the data from the products table is shared in multiple subdirectories. The data insertion to the franchise table is done by the admin of parent "abc".

My goal is to create different URLs for different franchises.ie abc.com/efg , abc.com/jkl, abc.com/xyz .

I dont need to create subdirectories in the server. Is there any solution for this??

My server is VPS with Plesk control panel